Senior Backend Engineer (Ruby), AI Engineering: Duo Agent Platform Tools

Gitlab

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact. GitLab is where careers accelerate, innovation flourishes, and every voice is valued. Our high-performance culture is driven by our values and continuous knowledge exchange, enabling our team members to reach their full potential while collaborating with industry leaders to solve complex problems. Co-create the future with us as we build technology that transforms how the world develops software. *Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab. AN OVERVIEW OF THIS ROLE GitLab is an open core software company that develops the most comprehensive AI-powered DevSecOps Platform, and more than 100,000 organizations use it. Our mission is to enable everyone to contribute to and co-create the software that powers our world. We make this possible by running our operations on our product and staying aligned with our values. The AI Events team builds the event platform and trigger system that power GitLab Duo Flows, enabling them to run automatically in response to events across the development lifecycle. The platform handles internal GitLab events like code pushes, issue and merge request changes, continuous integration and continuous delivery (CI/CD) pipeline results, and deployments, as well as custom events from third-party tools like Jira, Jenkins, and Slack. Flow Triggers link projects to flows, firing automatically when matching events occur, so that AI-powered workflows like automated code review can run without anyone lifting a finger. As a Senior Software Engineer, you'll join a small, close-knit team that maintains infrastructure that many of GitLab's AI features rely on. You'll likely spend much of your time on the triggers side of the platform, linking events across GitLab and third-party tools to the AI workflows that act on them. This part of the system needs to handle significant scale and stay highly available, since it's core to automated AI-enabled work across the platform. WHAT YOU’LL DO * Design and build the trigger system that links GitLab events, including code pushes, merge request and issue changes, CI/CD results, and deployments, and third-party events from tools like Jira, Jenkins, and Slack to the AI-powered Duo Flows that act on them. * Contribute to the broader event platform, the core infrastructure that many of GitLab's AI features rely on to know when and how to run. * Architect for high availability and throughput, since this part of the system sits at the center of automated AI workflows across GitLab and needs to reliably process events at scale. * Work within GitLab's Rails monolith, where much of the event and trigger system lives, while staying open to other languages used elsewhere in the platform. * Influence product and architecture direction by proposing iterative solutions to complex technical problems across a multi-service environment. * Collaborate closely with your teammates, product manager, and designer to shape what the trigger system supports next, likely starting with an additional trigger type. * Partner cross-departmentally with other Duo Agent Platform teams to make sure triggers and events integrate cleanly with the broader agent ecosystem GitLab is building. * Participate in Tier 2 and Tier 3 on-call rotations to troubleshoot production, security, and urgent engineering issues in a globally distributed environment. WHAT YOU’LL BRING * Deep experience with Ruby and Rails, comfortable working within a large, established monolith and shipping production code effectively. * Proven track record building products that interact with large language models, not training or building machine learning models yourself, but with hands-on experience integrating large language models into real, user-facing tools. * Proven track record designing and operating systems built for large scale, with a focus on high availability and throughput in production environments. * Hands-on experience with agentic systems and development, including building workflows that let AI agents take autonomous action. * Demonstrated ability to make progress in evolving problem spaces and learn new AI capabilities quickly as the underlying technology shifts fast and this team ships while it learns. * Strong written communication skills for working asynchronously in a remote, globally distributed team. * Additional helpful experience includes Python, since other parts of GitLab's AI platform are built in it, and using GitLab as a product. ABOUT THE TEAM We're part of GitLab's AI Engineering organization. We're a small team with members based in Europe, and we're growing. We work closely with our manager, product manager, and designer, and we coordinate cross-departmentally with other AI Engineering teams, since GitLab's AI teams work closely together. We operate async-first, communicating through GitLab issues and Slack, with async standups and regular one-on-ones. We value autonomy and ownership, giving engineers the authority to make decisions and move quickly, balanced with high context sharing across the group. AI is a top priority at GitLab, and we work on cutting-edge technology in a high-impact, high-visibility part of the company.   Remote-Global HOW GITLAB SUPPORTS FULL-TIME EMPLOYEES * Benefits to support your health, finances, and well-being * Flexible Paid Time Off  * Team Member Resource Groups * Equity Compensation & Employee Stock Purchase Plan * Growth and Development Fund * Parental Leave  Please note that we welcome interest from candidates with varying levels of experience; many successful candidates do not meet every single requirement. Additionally, studies have shown that people from underrepresented groups are less likely to apply to a job unless they meet every single qualification. If you're excited about this role, please apply and allow our recruiters to assess your application. ---------------------------------------------------------------------------------------------------------------------------------- Country Hiring Guidelines: GitLab hires new team members in countries around the world. All of our roles are remote, however some roles may carry specific location-based eligibility requirements. Our Talent Acquisition team can help answer any questions about location after starting the recruiting process.   Privacy Policy: Please review our Recruitment Privacy Policy. Your privacy is important to us. GitLab is proud to be an equal opportunity workplace and is an affirmative action employer. GitLab’s policies and practices relating to recruitment, employment, career development and advancement, promotion, and retirement are based solely on merit, regardless of race, color, religion, ancestry, sex (including pregnancy, lactation, sexual orientation, gender identity, or gender expression), national origin, age, citizenship, marital status, mental or physical disability, genetic information (including family medical history), discharge status from the military, protected veteran status (which includes disabled veterans, recently separated veterans, active duty wartime or campaign badge veterans, and Armed Forces service medal veterans), or any other basis protected by law. GitLab will not tolerate discrimination or harassment based on any of these characteristics. See also GitLab’s EEO Policy and EEO is the Law. If you have a disability or special need that requires accommodation, please let us know during the recruiting process.

Gitlab

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact. GitLab is where careers accelerate, innovation flourishes, and every voice is valued. Our high-performance culture is driven by our values and continuous knowledge exchange, enabling our team members to reach their full potential while collaborating with industry leaders to solve complex problems. Co-create the future with us as we build technology that transforms how the world develops software. *Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab. AN OVERVIEW OF THIS ROLE As an Engineering Manager, Git at GitLab, you’ll guide a deeply technical team focused on building, maintaining, and providing expertise on the Git version control system. The team’s work spans upstream development of Git, support for teams across GitLab, new tooling, scalability improvements, new data formats, and ongoing maintenance of the Git codebase. This role is a good fit for you if you can guide senior and staff engineers through complex, long-horizon technical work while building a culture of technical rigor, clear accountability, and ownership. You’ll help the team balance upstream open source development with GitLab product and infrastructure priorities, especially as much of the team’s work is centered on Scaling Git and adjacent foundational work. You’ll work in an upstream-first environment where strong relationships with the Git community matter. Mailing-list based collaboration, clear written communication, and thoughtful technical judgment are central to how this team succeeds. Project areas include: * Scaling Git * Git-related infrastructure and foundational performance work WHAT YOU’LL DO * Manage a team of senior and staff engineers working on the Git version control system and Git-related infrastructure. * Build a team culture where technical rigor, clear accountability, and ownership are the norm. * Drive execution on complex, long-horizon work across performance, scalability, maintainability, and core Git architecture. * Help the team balance upstream open source development with GitLab product and infrastructure priorities. * Support your engineers’ growth through feedback, mentoring, career development, and stretch opportunities. * Foster strong written communication and asynchronous alignment across a fully distributed team. * Partner with downstream teams like Gitaly and other stakeholders who rely on Git expertise for performance, feature design, and roadmap clarity. * Represent the team credibly with cross-functional partners and in stakeholder conversations about Git direction, performance, and scalability. WHAT YOU’LL BRING * Experience managing engineering teams with direct reports, including hiring, performance management, and career development. * A management philosophy centered on building engineer agency and ownership, with credibility grounded in consistency, follow-through, and technical judgment. * Proven ability to guide highly specialized engineers through ambiguity, structured debate, high-stakes technical tradeoffs, and the realities of upstream open source development, including community review and long feedback cycles. * Strong written communication and remote, asynchronous collaboration skills across distributed, multi-timezone teams. You’re comfortable moving work forward in documents, issue threads, and asynchronous reviews, not just in meetings. * A track record of delivering under pressure on ambiguous, long-horizon technical projects with clear outcomes, and of reasoning from fundamentals about maintainability, technical debt, and long-term platform viability. * Hands-on background in version control systems, distributed systems, storage engines, or other low-level infrastructure domains, with the ability to engage credibly with systems code and architecture, ideally in C, Go, or similarly performance-sensitive environments. ABOUT THE TEAM The Git team is focused on building, maintaining, and providing expertise on the Git version control system. Core work includes upstream development of Git, supporting teams across GitLab, fostering the Git community, and ensuring the long-term viability of the project. This is a deeply technical team that operates in an upstream-first environment. Building strong relationships with the Git community, engaging in mailing-list based collaboration, and balancing long-running technical work with practical delivery are central to how the team succeeds. Today, a significant share of the team’s focus is on Scaling Git and adjacent foundational work, with limited remaining capacity outside that effort. HOW GITLAB SUPPORTS FULL-TIME EMPLOYEES * Benefits to support your health, finances, and well-being * Flexible Paid Time Off  * Team Member Resource Groups * Equity Compensation & Employee Stock Purchase Plan * Growth and Development Fund * Parental Leave  Please note that we welcome interest from candidates with varying levels of experience; many successful candidates do not meet every single requirement. Additionally, studies have shown that people from underrepresented groups are less likely to apply to a job unless they meet every single qualification. If you're excited about this role, please apply and allow our recruiters to assess your application. ---------------------------------------------------------------------------------------------------------------------------------- Country Hiring Guidelines: GitLab hires new team members in countries around the world. All of our roles are remote, however some roles may carry specific location-based eligibility requirements. Our Talent Acquisition team can help answer any questions about location after starting the recruiting process.   Privacy Policy: Please review our Recruitment Privacy Policy. Your privacy is important to us. GitLab is proud to be an equal opportunity workplace and is an affirmative action employer. GitLab’s policies and practices relating to recruitment, employment, career development and advancement, promotion, and retirement are based solely on merit, regardless of race, color, religion, ancestry, sex (including pregnancy, lactation, sexual orientation, gender identity, or gender expression), national origin, age, citizenship, marital status, mental or physical disability, genetic information (including family medical history), discharge status from the military, protected veteran status (which includes disabled veterans, recently separated veterans, active duty wartime or campaign badge veterans, and Armed Forces service medal veterans), or any other basis protected by law. GitLab will not tolerate discrimination or harassment based on any of these characteristics. See also GitLab’s EEO Policy and EEO is the Law. If you have a disability or special need that requires accommodation, please let us know during the recruiting process.

Hemnet

With over 40 million visits each month, you’ll be part of Sweden’s most popular property platform – and one of the world’s most admired real estate platforms. With access to vast amounts of data, you’ll have limitless opportunities to explore and create new features that enhance the experience for Sweden’s real estate agents, home buyers, and sellers. You’ll join a collaborative, cross-functional team where your unique perspective is truly valued. As a senior engineer, you’ll lead by example by crafting elegant code while driving architectural evolution, mentoring colleagues, and helping us build a modern, scalable platform. What you’ll do 💥 At Hemnet, we help millions of people navigate one of the biggest milestones of their lives: finding and shaping their home journey. Our team’s mission is to make that experience feel personal, inspiring, and seamless. We are looking for a collaborative backend engineer to help us build the real-time data pipelines and smart CRM integrations that deliver the right message to the right user at exactly the right time. You'll: * Build & Scale with Node.js: Design and evolve resilient backend services and APIs using Node.js, Nest.js, and GraphQL, keeping our platform fast and reliable. * Connect Our Systems: Lead the technical direction of our CRM and marketing automation integrations. You’ll ensure our data pipelines are secure, scalable, and built to last. * Bring Data to Life: Partner closely with our CRM and Marketing teams to turn user behavioral signals and segmentations into timely, meaningful automated messages. * Collaborate Across Disciplines: Act as a supportive technical partner for non-technical stakeholders, translating complex backend concepts into clear, shared ideas. * Grow Together: Lift the team around you through empathetic mentorship, open knowledge sharing, and contributing to a welcoming, continuous-learning engineering culture. Who we think you are 🤩 We know that excellent engineers come from all kinds of backgrounds. You don’t need to match a rigid checklist, but we think you’ll thrive in this role if: * You have a solid foundation in backend development, with deep experience in Node.js and framework ecoystems like Nest.js. * You enjoy the unique challenges of third-party integrations, API design, and event-driven data flows. * You care just as much about the people you work with as the code you write, you value clear communication, psychological safety and diverse perspectives. * Bonus points (but not required): You’ve worked with Ruby, or you’re curious about experimenting with modern AI tooling like Claude. I am your new manager 👋 Hi! My name is Staffan, and I’ll be your new manager. I’ve been at Hemnet since 2019 and since last year working as Engineering Manager for a domain called Consumers. Our teams are currently working on many new and important areas for Hemnet – including personalization and smarter search features (including several initiatives utilizing AI to deliver next level user experience). My leadership style is listening, transparent, accessible, and supportive, while also challenging you to take your next step. Hopefully, we’ll learn a lot from each other and have plenty of fun as we break new ground at Hemnet. As a team, we get things done; we know when and where value can be added, and we’re clear on our priorities. Why did I decide to join Hemnet? I was strongly drawn to the culture and atmosphere – a wonderful combination of kindness, inclusiveness, and helpfulness, paired with high ambitions and a strong drive forward. My impression is that the people and the workplace together create the perfect foundation for you to do the best work of your career. A Note on Inclusion 💚 At Hemnet, we believe that diversity in gender, sexual orientation, ability, neurodiversity, cultural background and life experience makes us stronger. We welcome applicants of all identities and backgrounds. We build better together. At Hemnet, we believe diverse teams write better code and build better products. Even if you don’t check every single box above, we encourage you to apply. We value potential, curiosity, and a willingness to learn just as much as past experience. Our friendly Hemnet culture fosters a dynamic, playful environment where every voice is valued. Here, you’ll join a welcoming team that encourages you to thrive and grow, working alongside passionate colleagues from around the world. An Office-First Culture 🙏 We believe in the power of connection and the importance of flexibility. Our central Stockholm office is our hub for collaboration three days a week, with two remote days to support your personal work-life balance. We prioritize a sustainable pace because we know our best work happens when we’re energized and inspired. Please note that we're unable to provide relocation assistance for this opportunity.