Senior Fullstack Developer Hybird

Senior Software Engineer – London (Hybrid: 2–3 days/week in office)

Contract:

Permanent

Salary: up to £120,000 (DOE)

We're looking for a skilled and experienced Senior Software Engineer to join a fast‑paced, product‑focused team building innovative technology that delivers real impact. You'll work across the full development lifecycle—from design and implementation to deployment and monitoring—taking ownership of your work and contributing to a collaborative engineering culture.

This is a hands‑on role where you'll be empowered to make technical decisions, mentor others, and help shape the future of a platform used by thousands.

• Design, build, release, and monitor software systems end-to-end
• Collaborate with product, design, and data teams to deliver user‑focused features
• Provide technical leadership and mentorship to other engineers
• Use data to inform decisions and prioritise development efforts
• Work flexibly across the stack, with opportunities to specialise or broaden your scope

• Proven ability to define and deliver long‑term technical direction in ambiguous environments
• Full‑stack development experience, with ownership of technical decisions and outcomes
• Experience designing and deploying scalable, observable, and maintainable systems
• Familiarity with microservices architecture (synchronous and asynchronous)
• Strong experience with NodeJS, Type Script/JavaScript, and React
• Good understanding of cloud platforms (AWS, GCP, Azure)
• Solid grasp of database technologies and trade‑offs
• Experience with automated testing and web security best practices
• Background in SaaS, ideally B2B2C or consumer‑facing tech

• React Native best practices
• Native app development (iOS, Android), Expo
• Event‑driven systems and distributed architecture
• Technologies such as GCP (GKE, Pub Sub, Big Query), Temporal, Postgres, Circle
  
  CI, ArgoCD, Kubernetes, Helm, Docker, Terraform
• Experience in zero‑to‑one product development or highly innovative domains

• Competitive salary
• 25 days annual leave plus bank holidays
• Private healthcare and life assurance
• Dedicated Learning & Innovation time every second Friday
• Hybrid working with flexible hours
• Free drinks and snacks in the London office

Both Modis International Ltd and Modis Europe Ltd are Equal Opportunities Employers.

By applying for this role your details will be submitted to Modis International Ltd and/or Modis Europe Ltd. Our Candidate Privacy Information Statement, which explains how we will use your information, is available on the Modis website.