Full Stack Engineer

Doist; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Hybrid London office

25 days annual leave

Private healthcare with Vitality

Additional Christmas shutdown days

Biannual salary reviews

Team events & lunches

Cycle to Work

Job summary

XYZ Reality is hiring a Full Stack Engineer to own internal applications, dashboards and AI-enabled tools that power the company’s operations. The role focuses on architecture, data models, UI, deployment and ongoing iteration, collaborating with teams across the business.

You will build secure, scalable software using TypeScript/JavaScript, React/Next.js and Node.js, while integrating AI capabilities and ensuring data protection. Hybrid work from London supports collaboration with on-site teams.

Qualifications

• Proven full-stack software engineering experience with modern web stacks.
• Experience delivering secure, scalable internal applications.
• Hands-on with React/Next.js, Node.js and TypeScript.
• Familiarity with serverless platforms and CI/CD practices.

Responsibilities

• Design, build and maintain internal business applications end-to-end.
• Evolve prototypes, dashboards, and tools into secure, maintainable apps.
• Ship quickly using serverless and Backend-as-a-Service platforms.
• Build apps using TypeScript/JavaScript, React/Next.js and Node.js.
• Integrate AI capabilities to streamline workflows.
• Own full application lifecycle including deployment and monitoring.
• Ensure security and data protection for employee, user or customer data.
• Implement authentication, SSO and identity management.
• Champion engineering practices and CI/CD.
• Build integrations between internal systems and third-party platforms.

Skills

TypeScript/JavaScript

React/Next.js

Node.js

Serverless & BaaS

AI integration (LLM)

Security & data protection

OAuth/SSO/Identity

Postgres/SQL

CI/CD practices

Tools

Vercel

Supabase

Firebase

PostgreSQL

REST/GraphQL APIs

Job description

Build the technology behind the teams transforming construction. At XYZ Reality, we’ve created the world’s first engineering-grade Augmented Reality solution for construction. Our product, The Atom, is used on major projects worldwide to bring designs to life on‑site and help teams build more accurately, efficiently and with fewer mistakes. As a Series B business scaling across the UK, US and Europe, we’re not only evolving the technology our customers use, we’re also investing in the tools and applications that enable our own teams to operate effectively as we grow. We’re looking for a Full Stack Engineer to take ownership of the internal applications, dashboards and AI‑enabled tools that help power XYZ Reality behind the scenes.

The Role

This is a great opportunity for a Full Stack Engineer who enjoys building useful products, solving real business problems and owning what they create from idea through to production. As XYZ has grown, teams across the business have increasingly developed applications, dashboards, automations and AI‑enabled tools to solve problems and improve how they work. We now need an engineer who can bring technical ownership to this space – taking promising ideas and prototypes and turning them into secure, scalable and maintainable applications. You’ll work directly with teams across XYZ to understand what they need, translate those requirements into technical solutions and build applications that people across the business will genuinely use. Because these tools can interact with employee, user and potentially customer data, you’ll also ensure they are built and deployed properly, with security, maintainability and appropriate engineering standards considered from the outset. This is a role with plenty of autonomy. You’ll own applications end‑to‑end, from architecture and data model through to UI, deployment, monitoring and ongoing iteration. And when internal priorities allow, you’ll have the opportunity to contribute your Full Stack skills to our wider product engineering team and the technology behind XYZ Reality’s engineering‑grade AR platform. The role is based in London on a hybrid basis, ideally 2–3 days per week in the office, enabling you to work directly with the teams you’ll be building for while retaining flexibility.

What You’ll Be Doing

• Design, build and maintain internal business applications end‑to‑end, from data model and architecture through to user interface.
• Take ownership of existing prototypes, dashboards and tools and evolve them into secure, reliable and maintainable applications.
• Ship quickly using modern serverless and Backend-as-a-Service platforms such as Vercel, Supabase and Firebase.
• Build applications using TypeScript/JavaScript, React/Next.js and Node.js.
• Integrate AI capabilities, including LLM APIs, automation and agents, to improve and streamline business workflows.
• Work directly with stakeholders across XYZ to understand problems, gather requirements and translate business needs into practical technical solutions.
• Own the full application lifecycle, including architecture, development, deployment, monitoring, maintenance and iteration.
• Ensure appropriate security and data protection standards are built into applications handling employee, user or customer information.
• Implement authentication, SSO and identity management where required.
• Champion good engineering practices across code quality, testing, security and CI/CD.
• Build integrations between internal systems, data sources and third‑party platforms.
• Use feedback and usage data to continually improve the applications you build.
• Evaluate emerging technologies and AI capabilities and identify where they can genuinely improve how XYZ operates.
• Contribute to our wider product engineering environment when capacity allows.

What We’re Looking For

• Demonstrable in‑depth professional software engineering experience, ideally within a Full Stack role.
• Strong proficiency in TypeScript/JavaScript and modern web development.
• Hands-on experience with React/Next.js and Node.js.
• Experience building and deploying applications using platforms such as Vercel, Supabase, Firebase or equivalent modern technologies.
• Experience owning applications beyond the initial build – including deployment, maintenance, monitoring and ongoing improvement.
• Comfortable integrating AI/LLM services into applications and using modern AI tooling as part of your development workflow.
• Experience implementing authentication and identity management, such as OAuth/OIDC, SAML or SSO.
• A good understanding of application security and how to appropriately handle sensitive business and user data.
• Strong software engineering fundamentals, with an appreciation for maintainable code, testing and good development practices.
• Comfortable working directly with non‑technical stakeholders and turning their requirements into effective technical solutions.
• Able to work autonomously, prioritise effectively and take ownership of the applications you build.
• Experience within a startup, scale‑up or modern technology environment would be particularly valuable, as would experience with Postgres/SQL, row‑level security, data visualisation, reporting or workflow automation.

What You Could Be Working On

• Internal business applications and operational tools
• AI‑enabled workflows and automation
• Business dashboards and reporting
• Employee and talent applications
• Data‑driven internal tools
• Integrations between business platforms
• Secure applications handling employee, user and customer data
• Prototypes that need to evolve into scalable, production‑ready applications

Why Join Us

• Join a Series B business at an exciting stage of international growth
• Hybrid working from our London office
• 25 days annual leave + public holidays
• Private healthcare with Vitality
• Additional Christmas shutdown days
• Biannual salary reviews
• Summer & Christmas company events
• Free Thursday lunch and after‑work gatherings
• Employee referral scheme
• Cycle to Work scheme

If you’re a Full Stack Engineer who enjoys taking ownership, shipping useful technology and using modern tools to solve real‑world problems, we’d love to hear from you.