Full Stack Engineer (Product) (up to £130k)

Dex; Greater London; On-site; GBP 60,000 - 90,000; Full time

Job summary

Dex is partnering with a mission-driven platform serving charities and community organisations to manage critical operations and grantmaking with AI-enhanced insights. You will own features end-to-end, from concept through deployment, across frontend, backend, and infrastructure, shaping the product surface for fundraising and international markets.

Expect high autonomy in a lean engineering team, with opportunities to ship impactful capabilities, build robust tooling, and contribute to

Qualifications

• Broad engineering exposure across frontend, backend and infrastructure.
• Daily comfort with TypeScript and practical experience with Elasticsearch.
• Demonstrable passion for coding evidenced by personal projects or open-source contributions.
• Proficiency in leveraging AI coding tools to accelerate development while maintaining code quality.

Responsibilities

• Architecting and building new features across the full stack from front-end to back-end services in TypeScript.
• Shaping the technical direction for a rapidly expanding product surface including fundraising and international modules.
• Developing robust tooling to migrate new organisations onto the platform.
• Owning features end-to-end from idea and design through deployment and maintenance.
• Collaborating with customer success to diagnose issues and ensure platform stability.

Skills

Full-stack engineering

TypeScript

Open-source contributions

Production-ready features

Tools

Elasticsearch

AI coding tools

Job description

This role is with one of Dex's trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.

The role

This platform helps charities and community organisations manage critical operations like safeguarding, grant applications, and reporting. They then layer AI on top to help these organisations measure impact and secure more funding. It's a complex, mission-driven technical challenge, and the company has built significant traction, backed by leading investors with multi-year runway. You'll join a lean engineering team, taking ownership across the entire product surface – from new case management tools to a US expansion of their grant-making product. This isn't a role with a handed-down roadmap or a dedicated PM; you'll shape features from concept to production, making architectural decisions and supporting what you build. Expect high autonomy, not rigid process.

The work

• Architecting and building new features across the full stack, from front-end interfaces to back-end services, using TypeScript.
• Shaping the technical direction for a rapidly expanding product surface, including new modules for fundraising and international markets.
• Developing robust tooling to streamline the migration of new organisations onto the platform.
• Owning features end-to-end: from initial idea and technical design through to deployment and ongoing support.
• Collaborating directly with customer success to diagnose and resolve complex issues, ensuring platform stability and user satisfaction.

What You Bring

• Broad engineering exposure across frontend, backend, and infrastructure; you solve problems without needing explicit instructions.
• Daily comfort with TypeScript and practical experience with Elasticsearch.
• A demonstrable passion for coding beyond work, evidenced by personal projects or open-source contributions.
• Proficiency in leveraging AI coding tools to accelerate development while maintaining code quality and understanding.
• A track record of shipping features from concept to production and taking full accountability for their success and maintenance.