Senior Software Engineer
Our client is a fast-growing, VC-backed data platform that helps global brands understand and monetise user behavior within next-generation digital environments. The company fosters a dynamic, innovative culture with a focus on ownership and impactful work. This role involves working as a backend-leaning fullstack engineer (80/20 split), building and enhancing core data systems and APIs. The position requires collaboration with data pipelines, end-to-end feature ownership, and contributions to the technical growth of a developing engineering team. It offers a fast-paced environment with significant scope for influence and career development.
Role Overview:
The Senior Software Engineer will be integral to enhancing the company's data platforms, working primarily on backend systems with a focus on TypeScript, Node.js, and AWS. The role provides an opportunity to work on complex data problems, improve system architecture, and mentor fellow engineers within a small, energetic team.
Key Skills & Experience:
• Strong TypeScript engineering experience with real backend expertise
• Experience with data pipelines and high-volume data processing (e.g., S3, transformations)
• Proficiency in building and maintaining APIs and working with databases such as MySQL, MongoDB, or PostgreSQL
• Hands-on experience with Node.js, Express, and SQL/NoSQL databases
• Familiarity with cloud services, particularly AWS, including S3 and Kubernetes
• Experience working within startup or small team environments, comfortable with fast-paced tradeoffs
• Ability to mentor and review code proactively
• Solid understanding of database design and API development
Key Responsibilities:
• Build and improve core data systems and APIs
• Manage data pipelines involving high-volume data transformations
• Own features end-to-end, including API development, database management, and internal tools
• Collaborate closely with the engineering team to enhance system performance and scalability
• Contribute to the team’s technical growth and share knowledge through mentoring and code reviews
Requirements:
• Right to work in the UK
• Experience in a similar senior engineering role
• On-site work at our client's London (Paddington) location, with a hybrid working environment
• Ability to start on 17/04/2026
• Demonstrated experience with JS Node API, MongoDB, Postgres, SQL, and Typescript
Nice to Have:
• Experience with Kubernetes and Elasticsearch
If you're a proactive, experienced engineer looking to make a meaningful impact within a fast-moving environment, apply now to join this innovative team.
