At a Glance
- Tasks: Drive product direction and build scalable AI systems with a hands-on approach.
- Company: Join an ambitious VC-backed startup redefining software testing.
- Benefits: Competitive salary, equity, flexible working, and generous leave policies.
- Other info: Enjoy learning opportunities and regular team socials to connect and recharge.
- Why this job: Make a real impact in AI while collaborating with a smart, supportive team.
- Qualifications: Experience in AI system design and production delivery; comfortable in ambiguity.
The predicted salary is between 60000 - 80000 € per year.
About Us
It's hard to build a reliable system. It's harder to make sure that what you've built is really reliable. Synthesized is redefining software testing. Our platform automates test data, test cases, and test environments - empowering enterprise teams to ship faster, reduce compliance risks, and modernise QA at scale. We’re an ambitious VC-backed startup, having recently gone through Series A with leading global investors including redalpine, IQ Capital, Seedcamp, and Deutsche Bank. We have ambitious growth plans, and we are so keen for you to join us on the journey.
The Role
We are hiring an AI Engineer to help form the strategic direction of our agentic offering - turning vision into shipped, scalable systems. This is a hands‑on, builder‑first role on our small applied‑AI team. You'll work with our Product team to identify opportunities, scope them, and ship production‑grade agentic capabilities integrated across our wider platform.
Stack & How We Work
- Python, LangChain, Anthropic SDK, Pydantic, Docker
- Spec‑driven: product and tech specs live in Notion before code does
- Benchmark‑driven: every change scored against a golden‑set rubric. Agents that demo well but regress under load don’t ship
- LangSmith for trace‑driven debugging and agent observability
What You’ll Be Doing
- Drive product direction for our agentic offering, in close collaboration with our Product team
- Identify opportunities, scope them, and ship
- We’re looking for engineers who think like product builders, comfortable shaping the "what" as well as the "how"
- Own the design, architecture, and implementation of agentic offerings, including:
- End‑to‑end solution delivery
- Integrations with wider ecosystems (partners/customers/platforms)
- Drive prototypes through to production code, deployed alongside other Synthesized product offerings
- Support partner/customer technical integration discussions where needed
- Raise the bar for agentic systems engineering through the code you ship and the patterns you share with the team
About You
- Proven experience in design, architecture, and implementation of agentic offerings, including complete solutions and ecosystem integrations
- Built and shipped agents in production - tool/prompt design, framework tradeoffs, eval loops that catch regressions
- Nice to have: experience in test data management, test automation, or QA tooling
- Broader awareness of Software Quality Engineering is a supporting advantage
- Comfortable operating in ambiguity
- Demonstrated ownership and high velocity
What We Offer
- Competitive salary & meaningful equity – so you share in our success
- 25 days annual leave + celebration days + your birthday off
- Work From Anywhere – up to 1 month per year, fully flexible
- Hybrid working – a mix of home and our London offices
- Learning & development budget – for coaching, courses, and conferences
- Private medical, dental & vision cover
- Regular team socials & offsites – connect, celebrate, and recharge
- A collaborative team – smart, ambitious, and supportive
- Generous family leave – because life outside of work matters too
Equal Opportunities
We are committed to an inclusive and diverse workplace at Synthesized. Synthesized is an equal opportunity employer. We do not discriminate based on race, ethnicity, colour, ancestry, national origin, religion, sex, sexual orientation, gender identity, age, disability, veteran status, genetic information, marital status or any other legally protected status.
AI Engineer employer: Synthesized
At Synthesized, we pride ourselves on being an innovative and ambitious VC-backed startup that is redefining software testing. Our collaborative work culture fosters creativity and growth, offering competitive salaries, meaningful equity, and a generous learning and development budget to support your professional journey. With flexible working arrangements and a commitment to inclusivity, we provide a supportive environment where you can thrive as an AI Engineer while contributing to our exciting growth plans in the heart of London.
StudySmarter Expert Advice🤫
We think this is how you could land AI Engineer
✨Tip Number 1
Network like a pro! Reach out to people in the industry, attend meetups, and connect with current employees at Synthesized. A friendly chat can sometimes lead to opportunities that aren’t even advertised.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repository showcasing your projects, especially those related to AI and software testing. This gives us a tangible way to see what you can do beyond your CV.
✨Tip Number 3
Prepare for the interview by understanding our products and how they fit into the market. We love candidates who can discuss our tech stack and share ideas on how to improve our offerings.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining our team.
We think you need these skills to ace AI Engineer
Some tips for your application 🫡
Tailor Your CV:Make sure your CV reflects the skills and experiences that align with the AI Engineer role. Highlight any relevant projects or technologies you've worked with, especially those mentioned in the job description.
Craft a Compelling Cover Letter:Use your cover letter to tell us why you're excited about the role and how you can contribute to our mission. Be genuine and let your personality shine through while keeping it professional.
Showcase Your Projects:If you've built or shipped any agents or relevant systems, make sure to include them in your application. We love seeing real-world examples of your work, so don’t hold back!
Apply Through Our Website:We encourage you to apply directly through our website for the best chance of getting noticed. It’s the easiest way for us to keep track of your application and ensure it reaches the right people.
How to prepare for a job interview at Synthesized
✨Know Your Tech Stack
Familiarise yourself with the technologies mentioned in the job description, like Python, LangChain, and Docker. Be ready to discuss how you've used these tools in your previous projects and how they can apply to Synthesized's platform.
✨Showcase Your Problem-Solving Skills
Prepare examples of how you've identified opportunities and scoped projects in your past roles. Highlight your experience in turning ideas into production-grade systems, as this aligns perfectly with what Synthesized is looking for.
✨Understand the Product Vision
Research Synthesized and its mission to redefine software testing. Be prepared to discuss how you can contribute to their agentic offerings and how your vision aligns with theirs. This shows you're not just a coder but a product builder.
✨Emphasise Collaboration
Since the role involves working closely with the Product team, be ready to share experiences where you've successfully collaborated with cross-functional teams. Highlight your ability to communicate technical concepts clearly to non-technical stakeholders.
