Senior Backend Engineer

Are you passionate about building scalable data systems and solving complex technical challenges? We’re looking for a Senior Backend Engineer to join our dynamic, global team. This is aremote-first rolefor someone who enjoys ownership, thrives on problem-solving, and wants to work on high-impact, real-world technology.

This role is best suited to an experienced engineer. You’ll be expected to work independently on complex problems and, at times, liaise directly with clients.

At IntelliSense.io, we’re pioneering Objective AI (ODAI), combining fundamental physics with AI to understand and characterise the physical world. Our platform delivers high-value decision recommendations, acting as role-specific co-pilots that augment human intelligence or enable autonomous systems. In short, we’re building the brains behind smarter, more efficient operations.

What you’ll be working on

As a Senior Software Engineer, you’ll design and implement robust data solutions that meet both internal and client needs. You’ll also play a key role in shaping how we build software, supporting junior engineers, setting standards, and helping teams deliver high-quality work.

Key responsibilities include:

• Designing and implementing reusable data-processing features across multiple sites and product teams
• Leading feature breakdown and planning at a service level
• Maintaining and improving technical documentation
• Setting and upholding code review standards, including testing and code coverage practices
• Contributing to technology reviews and architectural discussions
• Supporting and overseeing implementation work across individual sites
• Identifying and addressing technical debt
• Investigating, breaking down, and resolving bugs
• Mentoring and supporting junior developers

What we’re looking for

• Solid experience in software engineering, with a strong focus on data systems
• Proficiency in Java and Node.js
• Strong SQL skills and experience with both relational and NoSQL databases
• Hands-on experience with message queues (e.g. NATS, Pub/Sub)
• Experience building web services using REST and SOAP
• Working knowledge of Kubernetes and Docker
• Excellent communication skills and confidence working in distributed teams
• A degree in Computer Science (or a related field), or equivalent practical experience

Bonus points for

• Familiarity with Python

Why join us?

• Remote-first role with flexible working hours
• Opportunity to work on cutting-edge technology and meaningful data challenges
• A collaborative, global team of talented engineers and domain experts
• A continuous learning environment with real opportunities to grow and lead

Location

This role is fully remote but must be based in the UK.

Apply today

We actively encourage applications from people of all backgrounds. If this role excites you, even if you don’t meet every requirement, we’d love to hear from you. You belong here. Let’s build something extraordinary together.