Staff Backend Engineer (PHP + Go) - 100% Remote - Europe

Phantom is revolutionizing the way people manage their finances with our cutting-edge money app, trusted by millions globally. Our platform seamlessly integrates the essential tools for managing, spending, and growing money into a user-friendly experience. We are dedicated to empowering users with the control and flexibility of cryptocurrency finance while e…

Twindo is pioneering the transformation of the remodeling, architecture, and interior design sectors through innovative AI and computer vision technologies. Our LiDAR-enabled iPhone and iPad scans generate accurate 3D representations of homes in mere minutes, delivering interactive models with precise measurements. Our proprietary technology converts these scans into detailed, editable as-built files in industry-standard formats. Our groundbreaking technology was showcased during Apple's keynote event when the LiDAR sensor was launched, and we are currently modeling millions of square feet every month.As a globally distributed, virtual-first organization, our team spans across various regions, with significant representation in the US and Europe.We are in search of a Senior Backend Engineer to contribute to the development and maintenance of our internal platform and tools, promoting business scalability and engineering efficiency. Reporting to the Platform Team Lead, this position involves a dynamic blend of foundational backend development and DevOps responsibilities, making it perfect for individuals who thrive on diverse projects. Collaboration with our iOS, Computer Vision, Visualization & Tooling, Web, Infrastructure, and Data engineering teams, as well as other departments, will be crucial.

Join Upwork, the world’s leading work marketplace, where we empower a diverse range of clients from innovative startups to over 30% of Fortune 100 companies. Our platform fosters collaboration between companies and talented professionals, unlocking their full potential.Last year, our vibrant community of skilled professionals facilitated over $3.8 billion worth of work through Upwork, allowing them to take charge of their careers by pursuing work they are passionate about.You will be part of Upwork’s Hybrid Workforce Solutions (HWS) Team, a global network of experts dedicated to supporting Upwork’s business initiatives. We are proud to have our HWS team members distributed across various locations worldwide.We are seeking a passionate and experienced Senior Backend Engineer with a strong background in Python, JavaScript, and server-side development, along with SQL skills and AWS expertise, to contribute to the Upwork Data Platform Backend.The Intelligent Data Platform team is looking for a Senior Backend Engineer to enhance the Snowflake Data Platform. This is a hands-on individual contributor role, focused on constructing, managing, and automating backend services that facilitate data ingestion, orchestration, governance, cost optimization, and compliance for a platform utilized by hundreds of internal users.

Canonical, a global leader in open-source software, is seeking a Senior Software Engineer specializing in Identity Management. In this role, you will enhance and modernize our identity management solutions, focusing on authorization and access control across our enterprise offerings. You will be instrumental in developing features that directly impact the user experience of Canonical's products and services. This position involves collaboration with a distributed team, technical leadership, and hands-on software development using Go (Golang) and Python. Join us in redefining identity management for cutting-edge technologies such as public cloud, AI, and IoT.

Join our innovative team at Raya as a Staff Backend Engineer specializing in Recommender Systems. In this fully remote role, you will leverage cutting-edge technology to develop and enhance our recommender systems, ensuring optimal user experience and engagement. Collaborate with cross-functional teams to design scalable solutions that drive business value.

WunderGraph is a growing startup focused on helping teams build digital products together, from initial idea through to launch. The platform brings developers together, making it easier to move from interface design to API implementation. WunderGraph aims to remove obstacles that slow down creativity and productivity. Developers at some of the largest global companies use WunderGraph to fine-tune their API environments. In March 2025, WunderGraph closed a $7.5 million USD Series A round with support from eBay, Karma Ventures, and Aspenwood Ventures. Culture matters at WunderGraph. Read more about our approach to Building the Company We Always Wanted to Work In. WunderGraph values direct communication and impact. Every team member’s voice counts. Role Overview The Staff Platform Engineer will own the core cloud infrastructure behind the WunderGraph Cosmo platform, serving enterprise customers across EMEA. The main focus is to keep the platform reliable, fast, and scalable by setting and meeting strict Service Level Objectives (SLOs). This position blends operational leadership with infrastructure engineering and product development in Go. The role involves designing internal systems for growth and managing essential product infrastructure. Key areas include: Overseeing the customer-facing telemetry pipeline using OpenTelemetry and ClickHouse Maintaining and improving the AI pipeline that supports WunderGraph’s products The ideal candidate brings hands-on technical leadership and enjoys solving complex, large-scale challenges, whether debugging distributed systems, tuning network performance, or automating infrastructure for better cost efficiency.

Join Enode and Transform the Energy LandscapeThe global energy consumption landscape is evolving rapidly, yet the transition to renewable sources is lagging. At Enode, we believe that the key to unlocking this potential lies in smarter, more interconnected solutions.Our platform is at the forefront of the green energy revolution, facilitating the development of cutting-edge applications that connect and optimize energy devices through our advanced APIs. By integrating everything from electric vehicles to heat pumps, we empower users to harness renewable energy more effectively.Partnering with leading energy companies and innovative green tech firms, we provide instant access to over 250 million consumers, enabling them to adopt sustainable energy practices.In light of the urgent need for decarbonization, our mission is more critical than ever. With the support of prominent investors such as Y Combinator, Lowercarbon Capital, and Creandum, we are just getting started, and we invite builders and innovators to join our passionate, mission-driven team.Your RoleWe are seeking a dedicated Mid-Level Backend Engineer to enhance the reliability, observability, and efficiency of our Electrical Vehicle & Chargers (EVC) platform. In this role, you will focus on fortifying Enode's connectivity layer, which integrates various EV chargers, vehicles, and OEM platforms into a seamless product experience for our customers.This position is distinct from infrastructure or DevOps roles; you will be part of the EVC Platform team, responsible for maintaining and expanding the product-level platform that connects users to energy devices through robust and high-quality integrations.Your contributions will include developing new integrations, addressing bugs, automating processes, refining monitoring and alerting systems, and enhancing the overall resilience of our API as we scale to incorporate additional OEMs and partners.Our technology stack primarily comprises a TypeScript codebase alongside React, Node.js, AWS, Docker, and PostgreSQL, structured using CDK/CloudFormation.

About RemoteRemote is tackling one of the most pressing challenges for modern organizations – navigating global employment compliance effortlessly. We empower businesses of all sizes to hire, compensate, and manage global teams seamlessly. Guided by our core values and a forward-thinking work culture, our team is dedicated to solving ambitious problems asynchronously from around the globe. You can find Remoters working from six continents (Antarctica is the final frontier!), and all of our job openings are fully remote.Innovation is at the heart of our values, and we have integrated Automation and AI capabilities into the requirements for every role.We invite every member of the Remote team to contribute their unique talents, experiences, and cultures to help us create a best-in-class HR platform. If you are dynamic, inquisitive, driven, and ambitious, we encourage you to join us and shape the future of work! Apply today!The RoleYou will be part of a diverse team of engineers specializing in Frontend, Backend, SRE, and QA, organized into cross-functional development teams focused on specific verticals.This position is available for multiple teams, and we will determine the exact team you will join during the interview process based on business requirements and your preferences.Regardless of the specific team, you will be responsible for developing tools, APIs, and integrations for one of our products.Our backend technology stack includes Elixir and Phoenix, supported by a Postgres database. We utilize React and Next.js for our frontend development. GitLab serves as our version control and CI/CD tool, while our applications are hosted on AWS. We rely on continuous integration for our deployments, allowing multiple deployments each day. You can explore our Engineering Rulebook for further insights.What You Can Expect from This RoleEngaging and meaningful challenges that empower individuals and businesses to operate globally.An opportunity to significantly influence our business as we are still early in our journey, meaning your contributions will have a lasting impact as the company grows.A great deal of flexibility in your work environment.

At Assured, we're on a transformative journey to revolutionize the insurance industry by modernizing claims processing. This often-overlooked aspect of insurance, characterized by outdated manual methods, costs the industry billions annually. We know there’s a better way. As a leading provider of software solutions for large insurers, we equip them with innovative tools ranging from user-friendly claim-filing software to advanced backend fraud detection systems. Our platform is the driving force behind claims processing for some of the world’s largest insurers. The challenges we tackle are multifaceted, from crafting digital experiences that provide reassurance to claimants in their times of need to implementing sophisticated machine learning-driven decision-making processes affecting billions in claims. Life at Assured is dynamic, collaborative, and fulfilling. We invite you to join us in redefining the future of developer experience at Assured. We are seeking a **Senior Application Platform Engineer** who is enthusiastic about creating scalable, secure, and sophisticated systems that empower teams to operate swiftly and confidently.

Remote builds a platform that helps organizations manage global employment, making it easier for businesses to recruit, pay, and oversee international teams. The company’s fully remote structure brings together team members from six continents, each contributing unique perspectives to the ongoing development of Remote’s HR platform. Automation and AI are woven into daily work, supporting efficient and compliant operations. Role overview The Senior Backend Engineer joins a cross-functional group that includes Frontend, Backend, SRE, and QA specialists. Teams are organized by product vertical, and the specific assignment will be determined during the interview process based on both business needs and personal interests. The main focus of this role is building tools, APIs, and integrations for one of Remote’s core products. Key technologies Elixir and Phoenix for backend development Postgres as the primary database React and Next.js on the frontend GitLab for version control and CI/CD AWS for hosting Continuous integration enables frequent deployments throughout the day. For more detail on engineering practices, see the Engineering Rulebook. What this job can offer Challenging projects that support global collaboration between businesses and individuals Opportunities to make a direct impact as the company grows A supportive and flexible environment that values both personal and professional growth Location This is a fully remote position open to candidates anywhere in the world.

Join Raya as a Senior Backend Engineer, where your passion for backend engineering will be recognized and valued! We are looking for an experienced professional excited to work within a Node.js environment. The ideal candidate will possess over 6 years of progressive experience, showcasing both results and leadership capabilities in their previous roles. This is a pivotal moment for our backend team as we navigate through a phase of significant growth.At Raya, we believe in fostering a culture of learning and collaboration, empowering our team members to lead solutions to challenging problems and evolve into their best selves. You will play a crucial role in supporting our backend initiatives in messaging, connectivity, and location-based mapping projects. A successful candidate will demonstrate diligence in designing scalable software architecture and embrace Raya’s vision of enhancing lives through meaningful, in-person connections.We offer a robust benefits package that includes comprehensive medical and dental coverage, a daily food delivery allowance of $50, equity-based compensation, a vibrant company culture, ample learning opportunities, unlimited vacation, 12 weeks of paid parental leave, and an annual $1,000 travel stipend for personal growth and exploration, reflecting our core values of human connection, empathy, and curiosity.

At Assured, we're transforming the insurance landscape by modernizing claims processing—a crucial yet often neglected aspect of the industry. Currently fraught with inefficiencies such as phone calls and faxes, this sector costs billions annually. We believe there's a better way.Our mission is to equip large insurers with cutting-edge software solutions that thrive in today's technology-driven environment. From self-service claim-filing systems to sophisticated backend fraud detection, we are the driving force behind claims processing for some of the world's largest insurance providers.The challenges we tackle are varied and intricate, ranging from crafting digital experiences that offer comfort and clarity to claimants in distress, to orchestrating large-scale, machine learning-driven decision-making for billions in claims payments. Life at Assured is dynamic, collaborative, and fulfilling.We are seeking a seasoned Senior Backend Engineer to play a pivotal role in shaping the future of our rapidly expanding B2B SaaS platform. As an essential contributor to our engineering team, you will take ownership of critical systems from architecture and infrastructure to core business logic, ensuring our scalability is both reliable and secure.You will collaborate closely with product, infrastructure, and data teams to introduce new capabilities, enhance performance, and evolve the platform that supports our clients' most vital workflows. This high-impact position offers remarkable ownership, technical challenges, and opportunities for mentorship and leadership.

About Us: At RelayProtocol, we are a pioneering Series A startup in the crypto space, dedicated to crafting innovative developer tools that facilitate token trading. Our vision is to empower developers in creating next-generation crypto applications by simplifying token integration and enhancing crypto commerce. We proudly support a myriad of crypto enterprises, including industry leaders like Magic Eden and Coinbase, across diverse sectors such as gaming, social interaction, and payments. Our team comprises deeply technical experts proficient in blockchain indexing, protocol design, and cross-chain interoperability. We are on the lookout for a driven Senior Backend Engineer to join our close-knit yet expanding team.Role Overview: We invite a highly skilled and seasoned Senior Backend Engineer with a robust foundation in crypto and/or financial technologies to elevate our team. In this pivotal role, you will be responsible for the design, development, and maintenance of the backend infrastructure for our cross-chain relayer product, ensuring its reliability and performance.Key Responsibilities:Backend Development: Architect, implement, and sustain highly scalable and resilient backend systems tailored for our cross-chain relayer. Optimize performance and responsiveness for large-scale data processing.Crypto Integrations: Engineer and uphold seamless integrations with various blockchain networks and crypto protocols, enhancing our platform's interoperability.

ABOUT YOUXsolla is on the lookout for an experienced Principal Engineer specializing in Identity and Access Management (IAM) and Golang backend development. In this pivotal role, you will spearhead the advancement of our authentication and authorization systems, empowering developers and players to interact securely and seamlessly within the Xsolla ecosystem.ABOUT USXsolla is a pioneering global commerce company, offering a comprehensive suite of tools and services designed to tackle the unique challenges faced by the video game industry. From independent developers to major studios, partners turn to Xsolla for support in funding, distributing, marketing, and monetizing their games. With a firm belief in the potential of video games, Xsolla is dedicated to uniting opportunities and consistently providing new resources for creators. Based in Los Angeles, California, Xsolla serves as the merchant of record and has empowered over 1,500 game developers worldwide to expand their reach and enhance their businesses. With multiple avenues for profit and success, developers have everything they need to thrive in the gaming world.For further details, visit xsolla.com.

At Speechify, we are on a mission to eliminate barriers to learning through innovative technology. Our platform transforms the way people engage with text, allowing over 50 million users to convert PDFs, books, Google Docs, news articles, and websites into high-quality audio. With our suite of text-to-speech products including iOS and Android apps, Mac application, Chrome extension, and web app, we empower users to read faster, retain more information, and enjoy a seamless reading experience.We are proud to be recognized by Google as the Chrome Extension of the Year and by Apple as the 2025 Design Award winner for Inclusivity. Our diverse team of nearly 200 professionals, hailing from renowned companies such as Amazon, Microsoft, and Google, and prestigious institutions like Stanford, work in a fully remote environment to drive our vision forward.OverviewThe Platform team is responsible for designing, developing, and maintaining our backend services, which encompass payments, analytics, subscriptions, new product features, text-to-speech functionalities, and external APIs. This pivotal role is suited for strategic thinkers who thrive in fast-paced settings, are passionate about shaping product direction, and have a track record of creating engaging user experiences.As a flat organization, we foster leadership through technical excellence and consistent results. We value a strong work ethic, clear communication, and a passion for success.Our interview process is efficient, featuring multiple technical evaluations, typically completed within one week.

Join Offchain Labs in our mission to revolutionize the decentralized application landscape. As a Senior Backend Engineer, you will play a pivotal role in enhancing blockchain scalability and security, helping us tackle real-world challenges while upholding the principles of decentralization, transparency, and security. Our team is composed of innovative thinkers and problem solvers eager to push boundaries and create a more equitable digital future. If you are passionate about blockchain technology and thrive in a dynamic environment, we want to hear from you!

Job OverviewAt Railway, our mission is to empower software engineers with advanced tools, enabling them to focus on creation rather than setup. We strive to revolutionize the experience of software development.As a Senior Platform Engineer specializing in storage, you will play a crucial role in architecting high-performance, reliable block and object storage systems that support millions of applications. Your innovative designs for both software and hardware will be pivotal in enhancing our infrastructure and driving our company's infinite scalability.“A successful design is one that goes unnoticed; a system that self-manages and just works.”- Inspired by Radia PerlmanIntrigued? Explore our team's exciting projects through these blog posts: 1, 2, 3.Curious about our work culture? Discover how we operate through this engaging series: 1, 2, 3, 4.

About TrafileaTrafilea is an innovative Consumer Tech Platform dedicated to fostering transformative brand growth. We are developing an advanced AI Growth Engine that will propel the next generation of consumer brands.With over $1 billion in cumulative revenue, more than 12 million satisfied customers, and a talented workforce of over 500 professionals across 19 countries, we leverage technology, growth marketing, and operational excellence to scale purpose-driven, digitally native brands.We own and operate our own digitally native brands—not an agency—boasting a presence in major retailers like Walmart, Nordstrom, and Amazon, along with a robust global D2C footprint.Why Join Trafilea?We are a tech-driven eCommerce group scaling our own globally recognized DTC brands, while empowering ambitious talent to grow swiftly. We create and scale our own brands. We invest in AI and automation like few others in the eCommerce space. We experiment rapidly, grow swiftly, and support you in doing the same. Be part of a dynamic, diverse, and talented global team. 100% Remote, competitive salary in USD, generous paid time off, and more.Key ResponsibilitiesAs a Senior Backend Engineer, you will be responsible for designing and delivering robust, high-performance systems that are the backbone of our globally cherished DTC brands. Your projects will cover a wide range from core backend components to AI-driven features, with a steadfast focus on scalability, reliability, and speed.If you excel at tackling complex challenges, writing clean and efficient code, and thrive in a fast-paced, product-oriented environment, this is your chance to make a significant global impact.Architect, develop, and enhance backend services using Golang and Node.js to support millions of customers worldwide.Design, create, and maintain REST APIs that facilitate smooth integrations across products, platforms, and teams.Work with both relational and non-relational databases, ensuring optimal data modeling, querying, and performance tuning.Collaborate closely with cross-functional teams (Product, UX, Marketing) to convert business requirements into technical solutions.Implement AWS best practices for scalable deployments, security, and cost efficiency.Engage in sprint planning, estimation, and reviews within our Agile/SCRUM framework.Proactively identify and resolve technical debt, ensuring the stability and performance of our systems.

Join Checkly as a Senior Backend Engineer and become an integral part of our innovative team. We are looking for an individual who is passionate about crafting scalable and efficient backend systems. This role offers the flexibility of remote work, allowing you to collaborate with talented professionals across different time zones (UTC-3 to UTC+3).As a Senior Backend Engineer, you will design, implement, and maintain robust backend services that power our platforms. You will work closely with other engineers, product managers, and designers to deliver high-quality software solutions.