Senior Full Stack Developer - Java​/Boot​/AWS

Senior Full Stack Developer

Internal

Title:

Software Engineering Senior Consultant

Location: London, UK (Hybrid - typically 1-2 days per month in office)

Contract: Permanent, Full-time

Package (perm): £70,000 - £85,000 + 10% Bonus + 10% Shares + Benefits (see more below)

Appvia is a specialist cloud, platform, and solutions engineering consultancy, helping organisations modernise software systems, improve developer productivity, and adopt cloud-native practices that enable long-term, sustainable delivery.

Our software engineering capability focuses on modern application development, domain-driven design, and improving delivery outcomes through better architecture, testing, and developer experience.

We work across complex, high-impact environments in both the public and private sector, delivering solutions where quality, scalability, and reliability are critical.

We’re hiring multiple Senior Full Stack Engineers (Java / Type Script) to join a growing Software Engineering practice supporting a major modernisation and AI-enabled transformation programme.

This is a hands-on, client-facing role where you’ll help design and deliver modern software solutions in complex environments. You’ll be working on what is effectively a greenfield build within a brownfield ecosystem, introducing new architecture, tooling, and engineering standards to enable long-term scalability and resilience.

You will report into a Principal Software Engineer, contributing both to day-to-day delivery and the continued growth of Appvia’s software engineering capability and technical direction.

Interview Process - 3 Stage

As a condition of employment, all successful candidates are required to complete Appvia's standard pre-employment checks, including right-to-work verification and reference checks, and to agree to Appvia's confidentiality and data handling policies as part of their employment terms. Screening for this role is carried out in line with UK Government vetting standards and Appvia's Information Security Management System.

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 Type Script 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

• Design and deliver modern Java and Type Script 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

Core technologies:

• Java / Spring Boot
• Type Script…