Senior Full Stack Developer

United Kingdom·LondonFull-timesenior

EngineeringFullstack Developer

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Quick Summary

Overview

Senior Full Stack Developer Internal Title: Senior Full Stack Developer Location: London, UK (Hybrid - typically 1-2 days per month in office) Contract: Permanent, Full-time Package (perm): £70,

Technical Tools

EngineeringFullstack Developer

About the Role

~1 min read

Discovery conversation with Talent Acquisition
Technical Interview with Engineering Team
Final Interview with Leadership

You must be eligible for UK Security Clearance (SC):

British Passport or ILR
Resided in the UK for the last 5 years
No criminal record or financial irregularities

You are a strong full-stack engineer with a consulting mindset, comfortable working in complex environments and influencing how software is designed and delivered.

You will bring:

Strong experience with TypeScript and modern Frontend development
Strong backend experience with Java (Spring Boot)
A solid grounding in Domain Driven Design (DDD)
Experience working with microservices architectures
Full-stack capability across UI, API, and data layers
Experience working in cloud-native environments (ideally AWS)
Interest or experience in AI-assisted development to improve productivity and quality
Confidence working directly with stakeholders and guiding technical decisions

Responsibilities

~1 min read

→ Design and deliver modern Java and TypeScript applications in complex systems.
→ Contribute to modernisation of legacy systems into scalable, service-based architectures
→ Apply DDD principles to improve system structure and maintainability
→ Improve development workflows, testing approaches, and engineering standards
→ Collaborate with platform and test engineers to deliver integrated, end-to-end solutions
→ Introduce and embed modern tooling and AI-assisted development practices
→ Act as a senior consultant within delivery teams, influencing engineering best practices
→ Support teams in building scalable, maintainable, and high-quality software

Java / Spring Boot
TypeScript for Frontend
HTML / CSS / JavaScript
MongoDB
Docker / Kubernetes
Maven
GitLab

Nice to Have

~1 min read

Playwright or modern testing frameworks
GovUK Design System / UI Framework

What We Offer

~2 min read

We are a self-funded, London-based consultancy, growing rapidly while staying true to what got us here: a human, engineering-led culture built on trust, ownership, and getting things done.

As we scale, we’re maturing as a business and expanding into new areas across platform engineering, software, data, and AI. We’re intentional about keeping our culture at the heart of it. We operate with a flat structure, agile ways of working, and a strong focus on collaboration, where good ideas come from anywhere and people are trusted to make an impact.

We work alongside our customers to solve complex, real-world problems: modernising systems, improving delivery, and building scalable platforms that enable long-term success.

If you want to be part of a team that values people as much as technology and gives you the space to grow while working on meaningful challenges, Appvia is the place to do it.

✓Learning budget of £1,000 a year

✓Your own MacBook Pro while you work at Appvia

✓Dog friendly office

✓Wear what makes you comfortable

✓Free snacks in the office

✓Pool table & ping pong table

✓Regular team socials, board game nights, industry meetups and more!

⚖️ Work-life balance