Senior Software Engineer – Full Stack – Social Impact – Hybrid

We are supporting a mission-driven organisation using data and technology to improve outcomes for vulnerable households across the UK.

This is an opportunity to join a growing technology team working on a product that delivers billions in financial support each year, helping shape both engineering culture and product direction within a scaling organisation.

You’ll play a key role in building and evolving a core platform, contributing across the full stack while driving best practice, delivery efficiency, and technical standards.

The Role:

• Work as a full stack engineer across frontend, backend, CI/CD and infrastructure

• Design, build and release new features for a high-impact product

• Maintain and improve existing systems, including bug fixing and optimisation

• Drive engineering standards and support team development and mentoring

• Collaborate with stakeholders across product, policy, operations and compliance

• Contribute to architecture decisions and long-term technical strategy

• Support secure, scalable and cost-efficient system design

• Engage with external partners (e.g. pen testers, accessibility specialists)

• Participate in incident management, post-mortems and continuous improvement

Skills & Experience:

Essential:

• Strong experience as a frontend/full stack software engineer

• Proficiency in:

  • JavaScript / TypeScript

  • Node.js

  • Modern frontend frameworks (Angular or React)

• Experience working with AWS cloud services

• Experience with:

  • CI/CD pipelines (e.g. GitHub Actions)

  • Infrastructure as Code

  • Testing frameworks and automated quality checks

• Strong communication skills and ability to work with non-technical stakeholders

• Experience mentoring or supporting other engineers

Desirable:

• Experience with:

  • React

  • AWS services (Lambda, S3, Fargate, DynamoDB, RDS)

  • Python for data workflows

• Exposure to:

  • Data platforms or analytics environments

  • Agile delivery

  • Secure or regulated environments

Tech Stack:

• Frontend: React

• Backend: Node.js, TypeScript

• Cloud: AWS

• Data: Python, PostgreSQL, Athena

• IaC: AWS CDK

About the Company:

This organisation is focused on using data and technology to improve lives, helping individuals access financial support and enabling more effective public services.

They are transitioning from start-up to scale-up, with strong investment in technology and a growing product suite used across both public and private sectors.

Why Apply:

• Work on a product with real-world social impact

• Join a growing, mission-driven tech team

• Opportunity to shape engineering culture and best practices

• Strong focus on collaboration, learning and progression

• Flexible hybrid working model

Additional Information:

• Hybrid: Home + London office

• Salary: £65,000 – £80,000

• Permanent, full-time