Senior Software Engineer

Lead Developer (Full Stack) | Remote (UK based) | Up to £90k + Bonus + Package

Stack: TypeScript | React | Next.js | Python | FastAPI | Postgres | Azure

We’re partnering with a fast-growing technology business building modern platforms that empower security teams, analysts, and defenders to protect the organisations they serve.

This is a chance to shape greenfield systems, define architecture, and build high-impact products used daily by engineers and customers alike.

If you’re a strong full-stack engineer ready to step into a Senior/Tech Lead position, this is one to explore.

The Role

You’ll take ownership of significant areas of the UI and front-end architecture, while also influencing backend design, API contracts, and long-term engineering direction.

This role combines hands-on engineering with architectural responsibility and mentorship.

Architecture

• Define technical direction for the frontend stack
• Influence and help shape backend architecture
• Own API interfaces, contracts, and schemas

Frontend

• Build fast, data-heavy UIs (dashboards, queues, timelines, case views)
• Design scalable component structures and UI patterns
• Integrate internal APIs and services
• Establish testing standards across UI and API layers

Backend

• Design and implement REST APIs (Python – Flask/FastAPI)
• Work with Postgres using SQLAlchemy / SQLModel
• Build internal services supporting automation
• Contribute to authentication and tenancy enforcement patterns

Leadership

• Mentor junior developers
• Lead code reviews and help establish engineering best practices
• Work with product teams to translate features into technical requirements
• Collaborate with design teams where needed

What We’re Looking For

Must Have

• 4–5+ years’ development experience with strong full-stack capability
• Strong React and TypeScript experience
• Solid Backend skills (preferably Python and ideally Flask or FastAPI)
• Strong relational data modelling knowledge (Postgres)
• API design and validation experience
• Comfortable with containers, CI/CD, and cloud deployment (Azure preferred)

Nice to Have

• Experience with incident/case/ITSM systems
• Exposure to cybersecurity concepts
• Experience scaling APIs for analytics (e.g. columnar databases, search platforms)
• Messaging/event systems (Kafka, RabbitMQ, Service Bus)
• Previous mentoring or team leadership experience

Why Join?

• True greenfield development – shape systems from the ground up
• Architectural ownership and technical influence
• Real-world impact in a security-driven environment
• Opportunity to mentor and grow a team
• Modern tech stack and engineering-first culture

Benefits

• 30 days holiday (rising to 35 with service) + bank holidays
• Company performance bonus
• Private medical insurance
• Death in service
• Pension
• L&D budget and subscriptions
• Free eye tests

If you’re interested in building products that genuinely matter- and want to play a key role in shaping architecture and engineering standards- Please click apply now!