Senior AI/Agentic Engineer
At a glance
Senior AI Engineering role at Synthesized. London.
Pay not stated AI Engineering salary
aimlroles summary, based on the employer's posting.
What you'll do
- Shape the agentic product roadmap with Product, then turn scoped opportunities into working platform capabilities
- Design and build complete agentic solutions, including connections to partner, customer and platform ecosystems
- Take prototypes into production and deploy them alongside the wider product
- Join technical discussions with partners and customers about integrating the systems
- Improve engineering practice by shipping strong code and sharing reusable patterns with the team
What you bring
- You have designed and built agentic solutions, including integrations with external ecosystems
- You have taken agents into production, covering tool and prompt choices, framework selection and regression-catching evaluation loops
- You can take ownership and deliver quickly while working through ambiguity
Who this fits
This is a hands-on senior engineering role for someone who wants to shape product choices as well as implement them. It suits a builder who can move agent prototypes into production and work with Product and external partners. The role is hybrid, combining home working with the London office, with up to one month of flexible work-from-anywhere each year.
From the employer
👋 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 WorkPython, 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.