Senior Software Engineer

Caribou; Greater London; On-site; GBP 125,000 - 150,000; Full time

Job summary

A global tax platform is seeking a proactive Full-Stack Engineer to join their team in Greater London. In this role, you will design and maintain both customer-facing applications and back-office tools, working closely with technical leaders. The ideal candidate has over 5 years of front-end and back-end coding experience, specializes in technologies like React and Go, and thrives in collaborative environments. Competitive salary and unique perks offered.

Benefits

Competitive salary

Generous EMI options

100% book subsidy

Pension

Health Insurance

Custom WFH equipment setup

Qualifications

• 5 years of writing production-ready code for both front-end and back-end.
• Experience with SQL for query optimisation, migrations, and analysis.
• Experience managing cloud services like Google Cloud and AWS.

Responsibilities

• Fully own our full-stack monorepo to maintain engineering velocity.
• Design, develop and maintain customer-facing app and internal tools.
• Drive architectural decisions and optimise efficiency across the tech stack.

Skills

Problem-solving

Analytical skills

Communication skills

Collaboration skills

Tools

React (TypeScript)

Go

Postgres

Docker

Job description

About Caribou

International tax is a rigged system. Tax rules get ever more complicated, compliance gets more expensive and the Big Four controls the expertise. They charge fees that only giant companies can afford while smaller businesses are left flying blind.

Caribou is a tax platform designed to make international tax accessible to every global business. We’re fixing Transfer Pricing first where one million businesses are in need but only ten thousand experts exist.

Our backers include Y Combinator, Accel, Lakestar and angel investors who were founders or executives of leading companies in London and San Francisco.

About the Role

We’re looking for a resourceful and proactive individual to join our talent dense team. In this role you’ll work closely with our CTO and domain experts to turn business needs into clear technical requirements.

You’ll bring excellent communication skills, a curiosity to learn, and the ability to think from first principles. You’ve worked directly with users before and know how to uncover what’s needed. You’re confident working independently but also know when to collaborate to keep things moving.

In this role you will

• Fully own our full‑stack monorepo to ensure that the engineering team can maintain velocity while scaling.
• Design, develop and maintain our customer‑facing app and internal back‑office tool.
• Discuss requirements directly with our tax team to design new features from front‑end to back‑end and everything in between.
• Drive architectural decisions and optimise efficiency across the tech stack.
• Collaborate with other engineers as well as non‑technical colleagues.
• Keep a keen eye on the customer experience to proactively raise issues and deploy fixes.
• Ship new features and fixes quickly.
• Play a leadership role by consistently innovating and developing a culture of excellence.

Requirements for the role

• Exceptional problem‑solving and analytical skills.
• Excellent communication and collaboration skills.
• 5 years of writing production‑ready code for both front‑end and back‑end.
• Experience with React (TypeScript) and Go.
• 5 years of writing SQL (Postgres) for query optimisation, migrations and analysis.
• Experience with serverless applications, containerisation (e.g., Docker) and CI/CD.
• Experience managing cloud services like Google Cloud and AWS.

Bonus points

• Startup experience.
• Data science / analyst experience – turning big data into meaningful insights.
• Experience building machine learning systems with LLMs, RAGs, utilising embeddings.

Technology

• Frontend: TypeScript, Vercel
• Backend: Go, Postgres, Google Cloud
• Services: GitHub, Sentry, Stytch, OpenAI

Perks & Benefits (for UK‑based full‑time employees)

• Competitive salary
• Generous EMI options
• 100% book subsidy
• Pension
• Health Insurance
• Custom WFH equipment setup