Member of Technical Staff - Software Engineer

The role

You will build real-time AI Native workflows, tooling, and interfaces. You will design and implement new functionality, prototype language integrations, and collaborate with product and design teams.

What you will do

• Design and implement new functionality
• Spin up a proof of concept to showcase innovative ideas
• Rapidly prototype a new language integration for the code generation pipeline
• Pair with a designer to fine-tune interactions in the UI, CLI or existing AI coding agents
• Integrate a third-party service
• Collaborate with other teams to plan an architecture
• Establish an end-to-end testing strategy
• Share technical vision for new product capabilities

Required qualifications

• Proven experience (typically 5+ years or equivalent) as a Software Engineer
• Experience in how software is built across teams and environments
• Experience leveraging AI coding tools and agents to accelerate work
• Comfortable with fast-paced, high-autonomy environments
• Demonstrated usage of AI tools in day-to-day work

Nice to have

• Background in AI products or developer tools
• Experience in rapid prototyping environments
• Programming polyglot experienced in several languages of different paradigms (e.g.: JavaScript/TypeScript, Python, C or C++, Haskell, etc.)
• Experience collaborating with AI researchers and bridging between research-focused and engineering-focused teams
• Experience building & scaling REST APIs, particularly those conforming to JSON:API
• Comfortable working on infrastructure (e.g., setting up CI pipelines, navigating Kubernetes)
• Personal or open-source project to share

Benefits

• Market-benchmarked salaries and EMI share options
• 25 days of annual leave
• UK public holidays
• Two paid volunteering days each year
• Vitality medical insurance, including dental, optical and mental health support
• 5% employer pension matched contribution through Smart Pension
• Company-paid life insurance with Metase providing cover of four times your annual salary
• Enhanced Maternity, Parental and Adoption Leave from day one
• £1,000 per year for learning and development
• Financial support for eligible team members commuting from outside Greater London
• Cycle to Work scheme
• Twice a year week-long offsites

Before you apply

• Intro Call
• Hiring Manager Chat
• Take-Home Exercise
• On-site Technical Session
• Leadership Discussion

About the company

Tessl is a fast-growing Series A startup building infrastructure for AI-powered software factories. It was founded by Guy Podjarny, previously founder of Snyk.