At a Glance
- Tasks: Lead AI capabilities from data to user interface, building innovative solutions for commerce.
- Company: Join commercetools, a pioneer in flexible commerce architecture and innovation.
- Benefits: Comprehensive health benefits, learning opportunities, equity participation, and generous family leave.
- Other info: Inclusive culture that values diverse perspectives and offers excellent career growth.
- Why this job: Make a real impact in the future of autonomous commerce with cutting-edge technology.
- Qualifications: 5+ years in software production, experience with LLMs, and full-stack development skills.
The predicted salary is between 60000 - 80000 £ per year.
About commercetools
Real innovation starts with a strong foundation, and at commercetools, that comes from the perfect balance of our product and our people. Behind every leap forward is a collective of builders, explorers, doers, makers, and problem-solvers. Together they are the engine of commerce innovation today. At commercetools, we power the next era of autonomous commerce for our customers. Whether it’s AI-driven solutions that help enterprises make smarter business decisions, bridging digital and physical shopping experiences, or enabling entirely new ways for industries to connect with their customers, we help the world’s most ambitious companies experiment, scale, and grow without limits.
Your Impact
You own AI capabilities end-to-end: from the data and context that feed a model, through agent orchestration, to the generative UI a user sees and trusts. You've personally shipped and operated full-stack apps in production, so backend, frontend, data, and ML aren't four teams you coordinate with, they're four things you do. You're not a research scientist; you wield models and engineer ruthlessly around their uncertainty.
- Build agent loops and orchestration: tool use, structured outputs, business-rule enforcement, graceful failure
- Build the integration layer (via MCP) that lets agents securely call backend systems and business APIs
- Render model output into live, streamed, accessible UI via generative-UI protocols
- Ground models in real data: retrieval, embeddings, and feedback loops that actually close
- Treat evals as a first-class system - provable improvement, not vibes
- Take a capability from prompt-in-a-notebook to a measured, guard-railed production feature
This role is to be based in our hubs - Berlin, Boston, Durham, Munich, London or Valencia.
What Sets You Apart
You're a creative problem-solver who is wired to find solutions. You confidently dive into complex challenges and have a talent for making them simple for others. Your curiosity drives you to constantly grow and contribute to an environment of trust and teamwork. Great ideas come from many paths, and your unique perspective matters more than checking every box. What matters most is the mindset you bring to the work.
- Shipped full-stack apps to production and owned them end-to-end: frontend through backend to deploy and operate, not handed off at a layer boundary
- 5+ years shipping production software, 2+ building with LLMs in production (real users, not demos)
- Hands-on experience with UI protocols (A2UI, AG-UI, MCP-UI, or similar).
- The AI spine: prompt/context engineering, agents, tool use, structured outputs, evals, MCP
- Python and TypeScript/Node + React; comfortable with async, streaming, and observability
- Working fluency with retrieval/embeddings and SQL
Nice to Have:
- Fine-tuning/distillation, e-commerce or marketplace systems, and a track record in 0→1
Our Benefits
Because work and life are connected, our benefits are too. We’ve designed them to give you the security, flexibility, and opportunities you need to focus on what matters most.
- Comprehensive health benefits for you and your dependents, including access to OpenUp for personalized mental health support
- Learning and development opportunities including an annual learning budget, access to self-paced learning platforms and language training, personalized coaching, mentorship, and leadership programs
- Family Leave Plus gives you additional fully paid weeks of parental leave on top of government-provided leave, so you can spend more time with your new addition
- Our equity participation program allows you to share in our success
Come as you are. Build with us. Your unique perspective is essential to our success. We are committed to building a team that reflects the world around us because we know it’s the only way to build the future. We celebrate our differences and have created a hiring process that’s fair, inclusive, and designed to let your talent shine. We proudly welcome applicants of every race, color, religion, gender identity, sexual orientation, age, and any other part of your identity that makes you who you are. As an equal opportunity employer, we believe that our strength lies in our diversity, and we invite you to be a part of our global community.
Principal Engineer, Resilience in London employer: commercetools
At commercetools, we pride ourselves on fostering a dynamic and inclusive work culture that empowers our employees to innovate and grow. With comprehensive health benefits, generous family leave, and a strong focus on learning and development, we provide the tools and support necessary for you to thrive in your role as Head of Product – Agentic Offerings. Our hybrid work model in vibrant locations like Berlin, Valencia, or London ensures a balanced approach to work and life, making us an exceptional employer for those looking to make a meaningful impact in the world of commerce.
StudySmarter Expert Advice🤫
We think this is how you could land Principal Engineer, Resilience in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at commercetools or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to commercetools.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like commercetools.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like commercetools that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Principal Engineer, Resilience in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at commercetools.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at commercetools and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at commercetools
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If commercetools uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
