Senior Software Engineer

CompanyFormula Recruitment

LocationLondon Area, United Kingdom

Posted At1/26/2026

UK Visa Sponsorship Analytics

Occupation Type

Programmers and software development professionals

Occupation Code Skill LevelHigher Skilled

Sponsorship Salary Threshold

£54,700 (£28.05 per hour)

Occupation rate applies

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Description

Senior Software Engineer (Node.js)

London – Hybrid flexible

Up to £80,000 + equity

We’re currently partnered with a real-time sports data platform that is revolutionising how companies leverage data to empower their business. They are looking for a performance focused Senior Engineer with a passion for writing clean, efficient, and maintainable code. This is an exciting opportunity to join collaborative and innovative startup with opportunities for professional growth and learning.

What You’ll Do

Design and develop high-throughput, low-latency APIs using Typescript/Node.js.
Build and maintain real-time data ingestion and processing pipelines.
Optimise backend services for scalability, reliability, and millisecond-level performance.
Implement websocket and streaming endpoints for live data delivery.
Collaborate with front-end teams to power trading consoles and dashboards.
Profile and tune Node.js applications for performance and memory efficiency.
Ensure secure API design and compliance with data privacy regulations.
Contribute to architecture discussions, code reviews, and documentation.

Key requirements

Strong experience with Node.js in production environments.
Experience with VPS-based deployments.
Solid understanding of microservice architecture and distributed systems.
Knowledge of concurrency patterns and performance optimisation.
Experience with APIs, networking, and real-time data systems.
Familiarity with observability tools.
Ability to write clean, maintainable, and well-documented code.

Nice to Have

Experience building high-throughput, low-latency APIs.
Knowledge of real-time data ingestion and streaming pipelines.
Exposure to profiling and optimisation tools.
Understanding of fault-tolerant, scalable microservice architectures.
Experience with websocket or streaming endpoints for live data delivery.
Awareness of observability best practices.

Why Apply?

Salary up to £80,000.
Remote working possibility & flexible hybrid set up
London Office
Opportunities for professional growth.
Strong Equity offering

All expenses paid work trips to exciting locations.

A collaborative team where every role is respected equally.

Strong learning environment.

The ability to shape an early-stage start-up and contribute to building a company that puts its internal teams and customers first.

This is an exciting opportunity for a Senior Software Engineer to help shape the future of a transformative real-time data platform. If you’re passionate about building world-class, high-performance systems and want to make your mark in a fast-growing tech company, we’d love to hear from you.

**Unfortunately, due to high volume of applications, not all submissions will receive feedback