Backend Software Engineer - Developer Experience

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 …

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.

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.

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.

At Databricks, we are driven by a passion for empowering data teams to tackle some of the world's most challenging problems—whether it's revolutionizing transportation or accelerating medical advancements. Our mission is to build and operate the premier data and AI infrastructure platform, enabling our clients to harness deep data insights to enhance their businesses.Founded by engineers and deeply committed to our customers, we eagerly embrace every opportunity to confront technical challenges. From designing next-gen UI/UX for data interfaces to scaling our services and infrastructure across millions of virtual machines, we are just getting started.As part of our ongoing commitment, we are embarking on a multi-year journey to develop the best Lakehouse Platform. While we are building on a solid foundation, our aim is to create significantly improved products. This involves re-evaluating every component to deliver our customers the fastest, easiest to use, and most secure data platform for all their data workloads.As a Software Engineer, you will play a vital role as a founding member of our London site and the core team in our journey towards achieving the Lakehouse vision. You will be engaged in the complete development lifecycle and will embody the core values that define Databricks.Your Impact:Our backend teams tackle diverse challenges across essential service platforms. You may work on:Complex problems that encompass product and infrastructure components, including distributed systems, scalable service architecture, monitoring, workflow orchestration, and enhancing developer experience.Developing reliable, secure, and high-performance services and client libraries for managing vast amounts of data on cloud storage backends such as AWS S3, GCS, and Azure Blob Store.Creating product features that empower our customers to seamlessly store and access their data.Addressing reliability issues related to Lakebase.Proactively identifying downtime causes and systematically eliminating root issues.Assisting the organization in defining SLIs, achieving SLOs, and driving long-term reliability improvements.

About Mistral AIAt Mistral AI, we harness the transformative power of artificial intelligence to simplify daily tasks, save precious time, and enhance learning and creativity. Our innovative technology is crafted to seamlessly integrate into the fabric of everyday work life.We are on a mission to democratize AI through high-performance, optimized, and cutting-edge open-source models and solutions. Our robust AI platform is tailored to meet the diverse needs of enterprises, whether on-premises or in the cloud. Our flagship offerings include Le Chat, your AI assistant for both life and work.We pride ourselves on being a dynamic, collaborative team deeply passionate about AI and its potential to reshape society. Our diverse workforce thrives in competitive environments and is dedicated to fostering innovation. With teams distributed across France, the USA, the UK, Germany, and Singapore, we embody creativity, humility, and a strong team spirit.Join us on this exciting journey as we shape the future of AI, making a meaningful impact together. Discover more about our vibrant culture at https://mistral.ai/careers.Role OverviewWe are on the lookout for passionate and talented Software Engineers to join our team. As a Backend Engineer, you will play a pivotal role in developing the core systems that power our key products: AI Studio, Le Chat, and Mistral Code. You will shape how users and developers interact with our AI platform at scale. Your focus will be on building reliable, high-performance backend systems and APIs that support millions of users and developers. Your contributions will directly enhance the user and developer experience, making it more engaging, efficient, and intuitive. We welcome engineers at all levels, from fresh graduates to seasoned professionals who are eager to learn, collaborate, and deliver impactful solutions.Key ResponsibilitiesBased on your expertise, you will engage in crucial components of our technology, including:Backend Development- Design, develop, and maintain scalable and robust backend features and APIs using modern frameworks.- Ensure high performance and reliability across our distributed systems.- Contribute to systems that support authentication, billing, AI tooling, and observability.

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.

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.

Join a Pioneering CompanyAt Palantir, we are at the forefront of developing transformative software that empowers data-driven decisions and operations. Our platforms enable partners to revolutionize industries by facilitating groundbreaking discoveries in healthcare, enhancing supply chain resilience, and aiding critical social initiatives.The OpportunityAs a Backend Software Engineer at Palantir, you will play a crucial role in crafting scalable software solutions that redefine organizational data usage. You will engage in every phase of the product lifecycle—from conceptualization and design to prototyping and delivery. Collaborating closely with both technical and non-technical team members, you will gain deep insights into customer challenges and develop innovative solutions. Our culture promotes cross-team collaboration, allowing you to broaden your technical expertise across various technologies and product domains. You'll work independently while receiving support from a vibrant community that encourages your growth as a technical contributor and engineering leader.Our Product Development teams consist of small, focused groups of Software Engineers, each dedicated to distinct product facets. The infrastructure teams specialize in the foundational layers of our software stack, emphasizing database technologies, distributed systems, large-scale data architectures, security, and application infrastructure. As an infrastructure Software Engineer, you will produce high-quality code that underpins Palantir Foundry and Gotham, ensuring they are performant, secure, and scalable. Your work will empower critical applications utilized by researchers, engineers, analysts, and forecasters across the globe.We seek engineers who are passionate about tackling real-world challenges and enhancing the productivity of both developers and end-users. If you are driven to create reliable, high-performance systems and robust APIs, this position offers a unique chance to impact our products and their users significantly.Exclusive Learning ExperienceSuccessful candidates may also participate in Frontline, a distinctive program that embeds engineers directly with customers. This short-term assignment provides invaluable insights into user experiences and the complexities our customers encounter, differentiating it from traditional engineering roles.

Join Palantir Technologies as a Senior Backend Software Engineer focused on Infrastructure. In this crucial role, you will design and implement robust backend systems that power our cutting-edge software solutions. Collaborate with a talented team to develop scalable and efficient solutions that meet the needs of our clients.

Application Deadline: We are actively conducting interviews and are eager to fill this role as soon as we find the right candidate.ABOUT THE OPPORTUNITYWe are in search of talented Backend Software Engineers who are passionate about developing tools that enhance frontier AGI safety research. This includes creating and maintaining evaluation libraries and tools that enable monitoring and control of our LLM traffic.REPRESENTATIVE PROJECTSAs part of your role, you may work on the following projects within your first six months:Internal tools for efficient running and analysis of evaluations, such as a system that investigates thousands of agentic evaluation runs in parallel and automatically surfaces insights.Automated evaluation pipelines designed to streamline the process from accessing a new model for pre-deployment testing to analyzing key results and disseminating them.Orchestration tools enabling researchers to execute thousands of agentic evaluations in parallel on secure remote machines.LLM proxy services that allow real-time monitoring of our coding agent traffic, supporting automatic identification of undesired behaviors.Development of LLM agents and MCP tools that automate internal software engineering and research tasks, with safeguards to prevent significant failures.Continuous Integration (CI) pipeline optimizations to enhance execution speed and eliminate unreliable tests.Telemetry API and enhanced instrumentation of existing tools to monitor usage and improve reliability.A data warehousing pipeline to store thousands of evaluation transcripts for research and dataset building.Improvements to the Inspect framework and ecosystem, including support for modern agentic scaffolds.

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

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.

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.

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.

Gigs builds an operating system for mobile services, helping tech companies add global connectivity to their products. The platform simplifies telecom integration for businesses, from fintechs launching mobile services to HR platforms managing work phone plans. Backed by major investors and a team of around 100 across the US and Europe, Gigs brings together engineers and business experts from leading tech companies to tackle technical and regulatory challenges in telecom. What matters to us Speed: We move quickly, set ambitious goals, and treat each week as a chance to make progress. Ownership: Team members take initiative and solve problems as they find them. Customer focus: Our work centers on helping customers succeed. Comfort with ambiguity: We value sound judgment and adaptability in a complex, evolving field. First principles thinking: We question assumptions and look for the reasons behind the rules. Role overview Own complex backend challenges from start to finish. Work with teammates to design and deliver scalable solutions. Build products that let clients offer reliable connectivity services to their users. Uphold strong engineering standards and help improve our tools and processes. Design, develop, and maintain high-quality APIs and backend services. Work with our Ruby on Rails monolith and contribute to our move toward a more distributed system.

Join our dynamic team at pod-network as a Backend Engineer, where you will play a crucial role in developing and maintaining our cutting-edge backend systems. We are looking for a passionate engineer who thrives in a collaborative environment and is eager to contribute to innovative projects.