Backend Software Engineer - Developer Experience

What do we do?At Paddle, we revolutionize the payment infrastructure for digital product companies. Rather than juggling a complex array of payment-related applications, we serve as the Merchant of Record for our clients. This streamlined approach alleviates the challenges of payment fragmentation, making the process faster, safer, and more cost-effective.Su…

Join GitLab, the leading orchestration platform for DevSecOps, where we empower organizations to enhance developer productivity, streamline operations, mitigate security risks, and drive digital transformation. Over 50 million users, including more than 50% of the Fortune 100, rely on GitLab to deliver secure software efficiently.At GitLab, we integrate AI as a fundamental productivity enhancer, expecting all team members to harness AI in their daily tasks to foster innovation and efficiency. This is a place where careers thrive, creativity flourishes, and every individual’s voice matters. Our culture is fueled by shared values and ongoing knowledge exchange, allowing every team member to realize their potential while collaborating with industry experts to tackle complex challenges. Join us in co-creating the future as we revolutionize software development.As a Staff Backend Engineer within the Developer Experience group, you will collaborate cross-functionally to enhance the engineering experience across GitLab's internal teams. We are currently transforming our testing methodology and development processes, empowering engineers to produce high-quality code with confidence.The Developer Experience group consists of six globally distributed teams of Backend Engineers and Software Engineers in Test. In this role, you will contribute to identifying and alleviating the major friction points hindering development at GitLab. You can expect to balance your time between coding in Ruby and Go, designing scalable solutions, and supporting teams in their delivery efforts. Your contributions will play a crucial role in shaping our engineering culture.

Join a Pioneering CompanyAt Palantir, we develop cutting-edge software that revolutionizes data-driven decision-making and operations. Our platforms empower partners to create life-saving medications, foresee supply chain challenges, locate missing individuals, and much more by connecting the right data with the right people.Role OverviewAs a Backend Software Engineer at Palantir, you will engineer scalable software that reshapes how organizations leverage data. You will actively participate throughout the product lifecycle—from ideation and design to prototyping and delivering production-ready solutions. Collaborating closely with both technical and non-technical team members, you’ll identify customers' challenges and create products that effectively address them. We promote cross-team interactions to foster the sharing of skills, context, and experiences, enabling you to gain insights into various technologies and product facets. Our engineers operate independently, making impactful decisions within a supportive community that encourages growth and development into strong technical contributors and engineering leaders.Your daily responsibilities will be dynamic, adapting to user needs and technical hurdles. One day, you might partner with other engineers to design a groundbreaking system that facilitates a new workflow; the next day, you could focus on optimizing performance for low-latency operational results.Our Product Development teams consist of small, agile groups of Software Engineers, each dedicated to specific product facets. These teams collaborate to build cross-functional capabilities, enhance user workflows, and consistently improve our software’s efficiency and reliability.We are seeking engineers who are enthusiastic about tackling real-world challenges and empowering both developers and end-users to maximize their potential. If you are driven to create reliable, high-performance, and scalable systems and to design robust APIs and primitives, this role presents a unique opportunity to significantly impact our products and the communities that utilize them.Unique Opportunity: Frontline ProgramFoundry Software Engineers may be selected for the Frontline Program, a distinct opportunity to engage directly with customers. In this short-term assignment, you will work alongside users to gain invaluable insights into product application and the challenges they encounter. Unlike standard engineering roles, Frontline involves tackling complex, ambiguous problems, empowering you to deliver impactful solutions across critical industries and institutions.

Join Duffel as a Backend Software Engineer and play a pivotal role in shaping the future of travel technology. We are seeking passionate individuals who thrive on solving complex challenges and are excited about creating scalable and efficient backend systems.

Join InfoSum, the premier data collaboration platform that empowers the world’s largest enterprises to connect their data sources while prioritizing consumer privacy. Our mission is to unlock the boundless potential of data, ensuring that it can be connected without being shared. As a people-centric organization, we provide the flexibility needed for you to excel, grow, and innovate within our team. If you seek a collaborative environment that values each individual’s contribution, we would love to connect with you.The Engineering team at InfoSum is committed to delivering high-quality, innovative software solutions tailored to our customers’ needs, contributing to the overall success of our organization. We utilize cutting-edge technologies, adhere to best practices, and foster teamwork to create scalable, reliable, and user-friendly software products.Job Overview:As a Backend Software Engineer, you will play a crucial role in designing, developing, and maintaining the backend systems that drive our software applications. Collaborating with cross-functional teams, you will translate business requirements into technical specifications, delivering robust and scalable backend solutions. This position is ideal for individuals passionate about backend development and eager to tackle innovative challenges.Core Responsibilities:System Design and Architecture: Create scalable, high-performance backend systems that support our software applications. Work alongside stakeholders to comprehend requirements and define technical solutions that align with business objectives.Backend Development: Write clean, efficient, and maintainable code primarily in Go, with familiarity in Python and/or Java as a plus. Implement backend services, APIs, and data processing pipelines following best practices and design patterns.Database Design and Optimization: Design and enhance database schemas, queries, and indexing strategies for optimal performance and scalability, particularly with relational databases like PostgreSQL.Integration and Interoperability: Seamlessly integrate backend systems with third-party services and external APIs, ensuring compatibility and consistency across system components.Quality Assurance: Implement automated testing methodologies to uphold the quality and reliability of backend systems. Collaborate with QA engineers to devise test plans, execute test cases, and resolve defects promptly.Performance Optimization: Identify and mitigate performance bottlenecks in backend systems through profiling, tuning, and optimization techniques to support high traffic and user interactions.

Your ContributionThe Senior Software Engineer III (Backend) plays a pivotal role in tackling intricate tasks and is instrumental in advancing the objectives of their team. This role includes leading small projects or components while crafting robust feature sets that adhere to high architectural quality standards.Key ResponsibilitiesAdvanced Software Development: Actively participate in the design and implementation of sophisticated software solutions, ensuring optimal functionality, scalability, testability, and reliability. Assist with system design and grooming processes.Code Quality and Optimization: Enhance and maintain code quality through thorough review practices, optimization strategies, and adherence to industry best practices.Innovative Problem Solving: Tackle complex technical challenges with creative solutions.Collaboration and Communication: Collaborate effectively within the engineering team and across various departments, working alongside other engineers, product managers, and stakeholders.Continuous Learning and Adaptation: Stay current with emerging technology trends and continuously enhance skills and knowledge.Technical Documentation: Produce and maintain comprehensive technical documentation for clarity and accessibility.

Our Mission At Bud, we are dedicated to revolutionizing financial data products that empower millions to take control of their finances. Our innovative solutions are utilized by some of the world's leading institutions.Your Mission ‍‍Join our dynamic team and play a pivotal role in crafting high-performance, scalable, and reliable applications using Go.A Glimpse into Backend Development at Bud As a Senior Backend Engineer, you will be instrumental in developing and maintaining our robust backend systems that underpin our suite of financial products and services. Collaborate closely with fellow engineers to design, build, and rigorously test our systems.Our Modern Tech Stack Includes:- Go for backend and data engineering projects- Diverse data stores such as MySQL, Cassandra, Redis, and BigQuery- RabbitMQ for queuing- Internal service communication via HTTP and gRPC- A comprehensive observability stack featuring GrafanaLab, Loki, Tempo, Looker, and more- Google Cloud Platform for cloud environments- Familiarity with Docker and/or Kubernetes is an advantage!We foster a collaborative environment that values every team member's contributions and insights.Key ResponsibilitiesDeliver technical solutions both independently and collaborativelyGuide and partake in discussions and initiatives with other backend developers; share knowledge and promote technical best practicesBuild strong relationships within the team and the broader organization, mentoring and providing technical guidanceStay informed about emerging tools and practices, consistently enhancing your technical expertise and domain knowledgeCommunicate effectively in both technical and non-technical contextsMake informed trade-offs in project scoping and delivery with a focus on maintainability, scalability, and timely delivery in collaboration with the team and stakeholdersWork closely with cross-functional teams to align on implementation strategies and solutionsInclusivity at BudWe are committed to creating a diverse team where everyone feels safe to be their authentic selves. We believe that diverse backgrounds, experiences, and perspectives will help us grow as a company and a team. We especially encourage applications from individuals of different races, genders, and identities.

Join Palantir Technologies as a Senior Backend Software Engineer and contribute to our innovative application development team. You will design and implement robust backend systems that are scalable and efficient, working alongside talented engineers in a collaborative environment.

AlphaSense is a market intelligence platform serving more than 6,000 enterprise clients, including many S&P 500 companies. The platform blends AI-powered search with access to a wide range of content such as equity research, company filings, event transcripts, expert calls, news, trade journals, and proprietary research. In 2024, AlphaSense expanded its offerings by acquiring Tegus. Founded in 2011 and based in New York City, the company employs over 2,000 people across global offices. Role overview This Staff Software Engineer position is part of the Core Developer Experience (Core DX) team and is open to candidates working remotely from the United Kingdom. The Core DX team shapes how AlphaSense engineers build software. The main goal: reduce friction and improve the speed and quality of feedback during local development. This work supports approximately 400 engineers worldwide, helping them work more efficiently and confidently. What you will do Design, build, and refine tools, environments, and workflows that support rapid, reliable development cycles. Enhance the daily experience of coding, building, and testing for engineers. Maintain and improve the internal developer platform, self-service tools, and productivity insights. Embed AI into the Software Development Lifecycle (SDLC) to improve workflows from coding through debugging and testing, with a focus on quality and safe adoption at scale. Collaborate with the Cloud DX team, which manages CI/CD and production infrastructure, to ensure a seamless SDLC from local development to production. Maintain a strong focus on developer-facing aspects of the engineering process. The Core DX team The Core DX team owns the essential development lifecycle at AlphaSense. Responsibilities include the daily tools and platforms engineers use, as well as internal systems for self-service and productivity measurement. While distinct from the Cloud Platform DX team, which manages CI/CD and production infrastructure, both groups work together to deliver a unified developer experience.

The healthcare industry is facing significant challenges, and those dedicated to improving it deserve better tools. With the influx of data from wearables, lab tests, and patient interactions, we're on the brink of a data-driven revolution.Junction is at the forefront of this transformation, developing a robust infrastructure layer for diagnostic healthcare. Our goal is to make patient data not only accessible but also actionable and automated across various labs and devices. We aim to leverage health data to provide unparalleled insights into human health and diseases.If you have a passion for harnessing technology to enhance healthcare, you'll find a perfect fit with us.Supported by prominent investors including Creandum, Point Nine, 20VC, YC, and other leading angels, we are committed to addressing one of the most pressing challenges of our time: making healthcare personalized, proactive, and affordable. Currently, we are connecting millions of users and scaling rapidly.Quick Overview:Your Role: A dedicated backend engineer focused on fortifying infrastructure to enhance patient care.About Us: A dynamic team of 35, with 6 engineers; our revenue has quadrupled in the past year.Compensation: £90K - £130K plus equity.Work Arrangement: Fully remote, operating within GMT timezone.Why We Need You:Our small yet impactful engineering team is tackling significant challenges in the Health & Fitness Devices and Lab Testing sectors. Our accomplishments include:Streaming time-series data from over 3 million health and fitness devices every second.Facilitating delivery of over 4 million lab tests across all 50 U.S. states for major digital health companies.Saving millions of patients substantial amounts of money.Looking ahead, we aspire to:Develop features that assist in detecting early signals of chronic diseases, enabling timely interventions.Build and expand our data systems to handle millions of device data connections flowing into our Junction Continuous Query system.Focus on constructing fault-tolerant backends and crafting clean, well-designed APIs.Engage in thoughtful questioning to transform rough ideas into dependable production software.

Join our dynamic team as a Senior Software Engineer specializing in Backend development. In this role, you will collaborate within our autonomous agile teams to craft the services that drive the Blacklane platform. Your contributions will enhance our back-office systems and address integration challenges for our business partners.Our Tech Environment: Our technology stack includes Ruby, Go, TypeScript, and Java, all structured using Domain-Driven Design (DDD). These services are deployed on Kubernetes and communicate via domain events using SQS and Kafka. We utilize a variety of data storage solutions including PostgreSQL, MySQL, Elasticsearch, Redis, and DynamoDB. Our cloud infrastructure is primarily based on AWS, with provisioning managed through Terraform.YOUR CHALLENGE:Address unique challenges to customize our products for specific markets.Maintain high standards through thorough test coverage, documentation, code reviews, and knowledge sharing.Dedicate time to optimizing performance, usability, and maintainability of the systems you oversee.Focus on personal development by acquiring new skills and technologies.Collaborate with a motivated, open-minded team committed to enhancing travel experiences for our guests.ABOUT YOU:You are proactive, curious, and a collaborative team player.You have at least 5 years of experience with two or more programming languages.You are proficient in at least one of the following languages: Ruby or Go.You possess knowledge of the HTTP protocol and have experience with REST APIs.You write high-quality, maintainable code and are familiar with the challenges of distributed systems.You are eager to learn more about event-driven architecture and domain-driven design.You have experience with Docker and containerized environments; knowledge of Kubernetes and Terraform is an advantage.

alten seeks a Backend Software Engineer for its Space Department in London. This role centers on developing software solutions that contribute to important projects and advance the team's technology. Role overview The Backend Software Engineer will work on building and maintaining systems that support the department's ongoing initiatives. The position involves collaborating with colleagues to deliver reliable and effective backend solutions. Location This position is based in London.

xai seeks a Backend Engineer in London, UK to focus on API development. This role involves designing and building APIs that form the backbone of the company’s products and services. Key responsibilities Design and implement APIs to support xai’s solutions Collaborate with frontend developers and product managers to ensure seamless feature integration Optimize API performance and maintain reliability This position offers the chance to work closely with both technical and product teams, shaping the way xai’s services communicate and perform.

Canonical, a trailblazer in open-source software solutions, is looking for a Senior Software Engineer to join our Launchpad team. In this pivotal role, you will drive the evolution of our platform, which is essential for managing open-source projects. Your deep knowledge of Linux, web services, and scalable systems will allow you to refine a mature, Python-based architecture that supports major initiatives like Ubuntu. Collaborating with a global team, you will work on enhancing developer workflows and maintaining critical services, ensuring that Launchpad remains a dynamic environment for open-source contributions. This is an exciting opportunity to make a significant impact in the world of software development.

About Us: At Breakroom (https://www.breakroom.cc), we are on a mission to create a more equitable world by ensuring every job is a good job. We are developing a community-driven rating system for jobs globally, providing essential information to empower individuals in their career advancements while assisting employers in fostering positive work environments.With over 3 million users comparing their jobs and more than 18,000 employers rated across the UK and the US, we are committed to building an inclusive and top-tier team. We welcome applicants from all backgrounds.Position OverviewAs we prepare to launch Breakroom in the US, we are expanding our engineering and product development team. We seek passionate individuals who want to be part of an early-stage team focused on scaling our operations in a new market. Your responsibilities will include:Designing, writing, deploying, and maintaining high-quality codeCreating internal tools and refining our processesProviding your technical expertise to influence product and team decisionsOur technology stack includes Elixir, using the Phoenix web framework, alongside Postgres, Redis, Google Pub/Sub, and Elasticsearch. While familiarity with Elixir/Phoenix is preferred, we are committed to supporting you in learning these technologies on the job.Work CultureWe adopt a lightweight agile methodology in product development, heavily relying on data for informed decision-making while prioritizing user experiences. Our team thrives on collaboration, working closely with designers, product managers, and fellow engineers. To facilitate this teamwork, we operate from our Spitalfields office in London on Tuesdays and Wednesdays. We release updates multiple times a day and encourage engineers to engage fully in the lifecycle of their projects.Key RequirementsTo excel in this role, you should:Be driven by our mission to create equitable workplacesPossess 5+ years of experience in web software developmentHave in-depth knowledge of backend programming languages, including Elixir, Ruby, Python, or Node.jsHave experience with full-stack web frameworks like Phoenix, Ruby on Rails, or DjangoHave a track record of developing complex features and servicesCommunicate complex technical ideas effectively across diverse teamsHave experience managing operations for high-traffic websitesWork well in cross-functional teamsBe available to support Breakroom during off-hours as neededPreferred Qualifications:Experience working on consumer-facing applications

Join InfoSum, the premier data collaboration platform, where we empower the world’s largest enterprises to collaborate across diverse data sources while prioritizing consumer privacy. Our mission is to harness the limitless potential of data, allowing it to be connected yet never shared. As a people-first organization, we prioritize personal and professional flexibility, fostering an environment where you can thrive and challenge the status quo. If you are passionate about collaboration and believe in the power of teamwork, we would love to hear from you.The Engineering department at InfoSum is committed to delivering innovative software solutions that meet customer needs and propel our organizational success. We embrace cutting-edge technologies, best practices, and teamwork to craft scalable, reliable, and user-friendly software products.Job Overview:As a Backend Software Engineer on our Shield team, you will be instrumental in developing and maintaining backend systems while addressing customer issues with urgency. Collaborating with cross-functional teams, you will gain insights into customer needs and deliver effective solutions. This role is perfect for someone with a zeal for backend development and a desire to broaden their skills into front-end elements.Core Responsibilities:System Design and Architecture: Partner with stakeholders to understand requirements and create technical solutions that align with business goals.Backend Development: Write clean, efficient, and maintainable code in Go, with additional experience in Python and/or Java being advantageous. Implement backend services, APIs, and data processing pipelines adhering to best practices and design patterns.Database Design and Optimization: Develop and optimize database schemas, queries, and indexing strategies for enhanced performance and scalability, with a focus on relational databases like PostgreSQL.Integration and Interoperability: Connect backend systems with third-party services and external APIs, ensuring seamless data exchange and compatibility across various system components.Quality Assurance: Employ automated testing practices to maintain the quality and reliability of backend systems. Collaborate with QA engineers to execute tests and promptly address defects.Documentation and Technical Support: Keep comprehensive and current technical documentation for backend systems. Provide technical assistance and support to team members and stakeholders when needed.

About TripadvisorThe Tripadvisor Group connects individuals with experiences worth sharing and strives to be the world’s most reliable source for travel and experiences. Leveraging our brands, technology, and capabilities, we connect our global audience with partners through rich content, travel guidance, and two-sided marketplaces for experiences, accommodations, restaurants, and various travel categories. Tripadvisor, Inc. (Nasdaq: TRIP) encompasses a portfolio of travel brands and businesses, including Tripadvisor, Viator, and TheFork. About the RoleWe are in search of a Software Engineer II to join our dynamic team. This position is available to candidates who can commute within a reasonable distance (typically within 2–3 hours) of one of our office hubs located in Oxford or London. We embrace flexibility in our work arrangements while also valuing meaningful in-person interactions for collaboration and connection. Expect a remote-first working model complemented by periodic in-office gatherings for team connection, planning, and other essential moments.At Tripadvisor Experiences, we foster a friendly and engaging work environment with a primary focus on delivering results. Collaborating closely with product managers and designers, our engineers are involved in the entire process, from software design to code, testing, deployment, and iterative improvement. Most of our engineers release code to production every few days, following a daily release cycle.What You Will DoAt Tripadvisor Experiences, our engineers are agile problem-solvers who flourish in tackling a variety of technical challenges. This role is predominantly backend-focused and encompasses full-stack responsibilities, with a primary emphasis on backend systems and occasional front-end projects. While expertise in front-end development is not a prerequisite, a willingness to learn is essential, and front-end skills will not be evaluated during the interview process.Our web stack includes Java, GraphQL, Kubernetes, SQL, and NoSQL databases, all operating on AWS. Although familiarity with every tool isn't necessary, a passion for technology and a collaborative spirit are key.

Please note that this position necessitates relocation to our Milan office.About SatispaySatispay is on a mission to transform the way people manage everyday payments, making them straightforward, equitable, and accessible for all. Our vision has evolved to redefine the future of financial transactions.We are a dynamic movement empowering millions, driven by a collective mission to address significant challenges. Our approach is swift, courageous, and collaborative, fostering an environment where innovation thrives.Joining the Core Team means engaging with essential systems that manage interactions with external banks, orchestrate payments, and create the foundational infrastructure for Identity and Access Management (IAM). This team also oversees critical risk management functions, including credit risk assessment and fraud detection.If you’re eager to craft impactful solutions that serve as the bedrock for our product teams, you’ve found the right place.Your RoleAs a Senior Backend Software Engineer within the Core Team, you will be pivotal in developing the backbone of our payment platform. You will ensure the technical excellence and timely delivery of complex systems that influence multiple services and product teams throughout the organization.Your daily responsibilities will include:Engineering Core Platform Domains: You will help design and evolve our most sensitive systems including the Transaction Ledger, IAM, and Payment Orchestration, ensuring they remain high-performing, scalable, and functional for product team integration.Scaling Risk & Financial Engines: You will optimize and develop services dedicated to bank integrations, credit risk, and real-time fraud detection, constructing robust logic to safeguard our financial ecosystem.Cross-Team Technical Leadership: You will lead technical analyses for projects that span multiple services, facilitating discussions and producing comprehensive documentation (Smart Papers) to ensure clarity and robustness in your designs.Collaborative Development: Engage actively with product teams to refine requirements and enhance the overall system architecture.

At Elliptic, we are pioneering the development of AI-driven tools that empower compliance teams to swiftly and confidently investigate cryptocurrency transactions. Our Automation Forge team is at the forefront of this innovation, crafting backend systems and AI integrations that support Elliptic's copilot, enabling investigators to track fund flows, identify trends, and manage risk in real-time.We are seeking a dedicated Backend Software Engineer to join our team and contribute to the design and implementation of APIs, workflows, and services that facilitate these capabilities.Your Impact:As a Software Engineer within the Automation Forge team, you will play a key role in designing and delivering robust, scalable services that underpin Elliptic’s copilot and other AI-enhanced functionalities.Collaborating with product managers, frontend engineers, and your technical lead, you will transform complex blockchain data into intuitive, user-centric solutions that assist compliance teams in tracing fund flows, revealing intricate patterns, and responding to risks with agility and assurance.By working collaboratively across various disciplines, you will contribute to the development of impactful features while consistently enhancing the quality, reliability, and usability of our platform. Your efforts will be instrumental in advancing Elliptic’s mission to create safer, more transparent, and efficient cryptocurrency markets.Your Responsibilities:Design, develop, and maintain backend services and event-driven systems utilizing TypeScript and Node.js.Build APIs and workflows that seamlessly integrate AI and LLM frameworks to enhance Elliptic's copilot and other intelligent features.Optimize and query data models across both relational and NoSQL databases.Work alongside cross-functional teams to bring features from concept to production.Participate in technical design reviews, planning sessions, and code reviews to continually enhance system quality.Contribute to infrastructure and observability practices within the team, ensuring shared responsibility for the performance of services in production.Your Qualifications:3–6 years of backend engineering experience specifically with TypeScript / Node.js.Strong API design expertise — you have developed and maintained production APIs and understand how to interface with external systems.Proficiency in data modeling — comfortable designing, optimizing, and querying data across various databases.Excellent collaboration skills — able to work effectively with diverse teams and communicate technical concepts clearly.

Join Freetrade as a Backend Software EngineerAt Freetrade, we are on a mission to revolutionize the investment landscape, making it accessible and affordable for everyone. Investing shouldn’t be a complicated or costly endeavor, and we are here to change that.As we expand our team, we seek passionate individuals eager to redefine how our users invest and enhance their financial growth. If you thrive on tackling intricate challenges and creating innovative solutions, you will be a perfect fit.2026 marks a significant milestone for us as we progress with our partnership with IG Group, which allows us to operate independently while leveraging the expertise of an established leader in the investment sector.This year, we are fast-tracking our development roadmap, introducing exciting features such as mutual funds, bonds, and family investment tools. We are also delving into the potential of AI to elevate our customer experience.Why Join Our Engineering Team?Become part of a transformative team shaping the future of investments. As a Software Engineer, you will be instrumental in developing and maintaining a robust, scalable platform that serves thousands of users daily. We confront complex technical challenges, foster innovation, and create solutions that genuinely matter. Here, your code powers the decision-making of investors across the UK. Join us to bring ideas to life.We are searching for a skilled Software Engineer to join our Backend Engineering team.Our Core Tech Stack:NodeJS/TypescriptGoogle Cloud PlatformPostgresqlKey ResponsibilitiesDeliver high-quality software solutions within deadlines, addressing complex challenges by evaluating multiple solutions and trade-offs to aid your team in making impactful technical decisions.Effectively tackle technical problems, providing scalable and maintainable solutions while balancing competing demands.Gain a thorough understanding of your product’s core features and KPIs, collaborating closely with the Product Manager to drive development.Be prepared for an on-call environment, addressing high-priority issues and knowing when to escalate as necessary.About YouYou hold a degree in Computer Science or a related field (or equivalent experience).You have a solid understanding of software development principles and practices.You are a proactive problem solver with a strong desire to learn and improve.