Senior Full Stack Engineer

Senior Full-Stack Engineer – Modern Financial Platform (Python | TypeScript)

A rapidly scaling technology company in the financial space is expanding its engineering group and is looking for a Senior Full-Stack Engineer to help shape the next generation of its platform. Their products power thousands of businesses across the UK, with billions already delivered through their systems — and they’re just getting started.

If you enjoy solving meaningful problems, working with a modern toolset, and having genuine influence on architecture and product direction, this is a place where you can make a visible impact.

What You’ll Be Doing

This role sits at the intersection of product, engineering, and architecture. You’ll:

  • Build reliable, high-performance systems that scale as the platform grows
  • Work end-to-end across backend services (Python) and frontend applications (TypeScript/React)
  • Operate in a DevOps-minded environment where engineers own the lifecycle from design to production
  • Contribute to shaping technical direction and evaluating new approaches
  • Mentor teammates and help raise engineering standards across the organisation
  • Champion pragmatic decision-making that balances simplicity, quality, and long-term value
  • Consider how engineering choices influence customers, product behaviour, and operational success
  • Take advantage of modern tooling — including AI — to accelerate development and improve outcomes

Tech You’ll Work With

Backend: Python, PostgreSQL, BigQuery, MySQL

Frontend: TypeScript, React, styled-components

Testing: Jest, React Testing Library, Cypress, pytest

Cloud & DevOps: AWS, GCP, ECS Fargate, Docker, Terraform, GitHub Actions

You don’t need expertise in every item — they value capability, curiosity, and the ability to learn.

How the Teams Operate

  • Cross-functional squads with shared responsibility and clear outcomes
  • Prioritisation based on real user needs and measurable product impact
  • Continuous delivery with automated pipelines
  • Strong focus on testing and reliability
  • Cloud-native architectures designed for resilience
  • Engineers fully involved from idea → implementation → production → iteration

What the Engineering Culture Looks Like

  • Inclusive teams where perspectives are heard, respected, and welcomed
  • Low-ego collaboration and open communication
  • Freedom to explore new technologies and influence decisions
  • A supportive environment that encourages experimentation and learning
  • A shared belief in building things properly — sustainably, securely, and thoughtfully

Benefits & Perks

  • Hybrid approach with complete flexibility — no compulsory office days
  • 25 days holiday + bank holidays + enhanced family leave
  • Competitive salary with equity participation
  • Choice of high-performance laptop (macOS or Ubuntu)
  • Team meals, social events, and thorough onboarding
  • Cycle-to-work and electric vehicle schemes

If you want to work in a forward-thinking engineering environment solving meaningful problems at scale, this role offers autonomy, impact, and long-term progression.

Job Details

Company
Atarus
Location
London, UK
Posted