Senior Full-Stack Engineer - AI Cost Visibility

About the role

DoiT is hiring a Senior Full-Stack Engineer for its R&D team to own the AI cost visibility product end-to-end, from Go services that ingest and model AI spend, through the APIs that expose it, to the React interfaces used by FinOps practitioners and platform engineers. The role is remote and full-time, based in the UK, Ireland, Estonia, the Netherlands, Sweden or Israel, with contractors also considered in Eastern Europe and Portugal.

Key responsibilities

• Own features end-to-end: understand the customer's pain, design and implement, release, monitor and iterate, defining what done looks like and owning the outcome.
• Understand how AI spend works (token and model pricing, inference and GPU economics, roll-up to teams) and how FinOps practitioners reason about it.
• Use AI daily across the workflow: exploring codebases and vendor APIs, prototyping, generating and reviewing code, debugging, writing tests and documenting.
• Design, build and scale backend services in Go and product experiences in TypeScript and React, turning large volumes of cost and usage data into clear, fast interfaces.
• Build capabilities that are fully available through APIs, so humans and agents can drive the platform.
• Set the standard for the team through design reviews, guardrails and mentoring peers.

Required profile

• 7+ years of professional software engineering experience, including multi-tenant SaaS products, with a track record of owning features or products end-to-end in production.
• Product-oriented thinking and comfort with ambiguity in a fast-moving market.
• AI-augmented working style: uses AI tools across the engineering workflow and can judge where they earn their place.
• Excellent written and spoken English; BA/BS degree or equivalent practical experience is a bonus.

Required skills

• Strong Go for backend services and APIs.
• Strong TypeScript and modern React.
• Public cloud experience (GCP preferred; AWS or Azure); working proficiency in SQL against an analytical store such as BigQuery.
• Software engineering practices, design patterns and architectural principles.

What we offer

• Unlimited vacation and flexible working options.
• Health insurance, parental leave and home office allowance.
• Employee stock option plan and professional development stipend.
• Peer recognition program.