Senior Software Engineer

Senior Software Engineer

Hybrid (2-3 days onsite, Central London) | £75,000 - £85,000 + benefits

A high-growth technology company operating at the intersection of real-time data, analytics, and cutting-edge product development is entering an ambitious expansion phase and is looking to hire a Senior Software Engineer to play a key role in its next stage of growth.

This is an opportunity to work on mission-critical, real-time systems used at scale, with genuine ownership across architecture, development, and delivery. The role is hands-on, commercially focused, and suited to someone who enjoys solving complex technical problems in a fast-moving environment.

What you'll be working on

• Building and evolving high-performance, real-time platforms that process and deliver live data

• Developing production-grade systems end-to-end, from requirements and design through to deployment and support

• Working across modern backend and frontend technologies, contributing to system architecture and scalability

• Collaborating closely with product and commercial stakeholders to deliver features that matter

• Supporting live systems, including participation in an out-of-hours support rota

Tech environment

You'll be working in a modern, cloud-based stack that includes:

• Backend & Frontend: Python, TypeScript, Golang, Node.js, JavaScript, React

• Data: PostgreSQL and NoSQL databases

• Cloud & DevOps: AWS, CI/CD pipelines, Terraform (desirable)

• Tooling: GitHub, Slack, Trello, Notion

Experience with real-time systems (such as betting, trading, finance, or high-throughput data platforms) is highly advantageous, as is any exposure to data science, machine learning, or wearable/sensor technologies.

What they're looking for

• 5+ years' experience in commercial software development

• Strong system design skills and the ability to work within a wider architecture

• A delivery-focused mindset with high standards for quality and reliability

• Comfortable working in both project delivery and live support environments

• Able to communicate complex ideas clearly to technical and non-technical audiences

• Self-motivated, adaptable, and confident taking ownership

The setup

• Hybrid role with 2-3 days per week onsite in a Central London office

• Full-time, permanent position

• Competitive salary £75k-£85k, depending on experience

• 25 days holiday, contributory pension, and the chance to grow with a scaling business

If you're a senior engineer who enjoys real-world impact, technical depth, and ownership, this is a role worth exploring.

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