Senior React Software Engineer

Who We Are

Interactive investor is an award‑winning investment platform that puts its customers in control of their financial future. We’ve been helping investors for nearly 30 years, are now the UK’s number‑one flat‑fee investment platform, with assets under administration approaching £75 billion and over 450 000 customers. For a simple, flat monthly fee we provide a secure home for pensions, ISAs and investments, offering over 20 000 UK and international investment options, including shares, funds, trusts and ETFs.

We also bring impartial, expert content from our award‑winning financial journalists, a highly engaged community of investors, and daily newsletters and insights.

The role is to design, build and support highly scalable, highly available, performant distributed applications to support our web, mobile and business platforms. We are looking for a developer excited at building cloud‑based applications and deploying small changes often. You will have a proven skill set spanning OO, DDD and a passion for quality and testing. You will join our Application Engineering team responsible for architecting and building our web, mobile, content, trading and internal apps, working closely with product and the wider business.

• Provide direct support for ensuring solutions for the squads are architected in line with our technology strategy.
• Ensure smooth transition of technical solutions and knowledge to the wider team at all levels of technical capability.
• Support discovery, architecture and design of new and complex solutions and patterns.
• Work with the Principal Engineer to establish new patterns and architectural designs, or support significant changes to existing solutions.
• Support architecture decisions and solution design processes across all technology disciplines where solutions integrate.
• Contribute towards enabling a culture of technical development and innovation, through fit‑for‑purpose solution design and R&D activities.
• Enable development of technical skills within the squad and team through knowledge transfer of emerging technologies and modern ways of working, ensuring high standards remain.
• Ensure architectural solutions are aligned to controls outlined by the control standards applicable to the solutions developed within the team.
• Support definition of change‑specific NFR considerations as part of any solution design or architectural decision.
• Ensure clear alignment to assigned solutions within the change/priority pipeline and manage risks.
• Support the full development cycle of solution designs to all disciplines, including testing.
• Proactively identify efficiencies around process, solutions and technology.
• Provide direct support for the Engineering Manager and Principal Engineer by owning and managing delegated subsets of the technical domain.
• Apply risk considerations to any solution design/architectural decision, highlighting options as part of documented solution.
• Include full‑stack security considerations in all architectural decisions and subsequent solutions.

• Proven experience in a development environment for the technology area.
• Previous experience delivering change to business‑critical, highly available customer‑facing platforms.
• Broad technical background, with proven experience supporting diverse technical integrations.
• Experience supporting the delivery of change across the full project lifecycle from initiation to live support.
• Experience delivering successful change through agile and waterfall methodologies.
• Experience delivering CI/CD change into cloud‑based environments.
• Proven experience working autonomously and owning assigned project deliverables.

• Distributed Systems and architectural experience of microservices, event‑driven architectures and serverless.
• AWS Cloud including Step Functions, Lambda and general AWS architecture.
• Expertise in Dev Ops and container environments including Kubernetes.

• Type Script and JavaScript development including Domain‑Driven…