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Senior software engineer

Southampton
Permanent
develop
Software engineer
€120,000 a year
Posted: 30 January
Offer description

Backend Engineer (Golang) – Health & Wellbeing Startup – Hybrid – up to £120k + package

develop Software Engineering team have been engaged exclusively to build a brand-new product team for an innovative health and wellbeing tech startup creating a next-generation wellness platform. The product is being built from the ground up with a privacy-first architecture, designed to protect user data while delivering intelligent, personalised experiences.

This is an opportunity to join early, shape the core backend infrastructure, and play a critical role in building a product that genuinely aims to make a difference.


The Opportunity

* Build and own Go-based backend services for a consumer-facing platform
* Work on a product where privacy and security are foundational, not afterthoughts
* Design infrastructure supporting end-to-end encrypted data sync
* Collaborate closely with mobile (iOS & Android) teams on shared data models
* Influence backend architecture, API design, and scalability from day one


What You’ll Be Doing

* Designing and developing backend services in Golang for secure data handling
* Writing and maintaining unit, integration, and load tests
* Contributing to shared API specifications (OpenAPI / YAML)
* Developing notification and engagement systems
* Working alongside Kotlin Multiplatform engineers on shared schemas
* Ensuring GDPR compliance and best practices in data protection
* Optimising systems for scale, performance, and security


What We’re Looking For

* Strong commercial experience building production services in Go
* Solid understanding of API design and OpenAPI specifications
* Experience with secure data handling and privacy engineering
* Familiarity with cloud infrastructure (AWS, GCP, or similar)
* Good understanding of database design (PostgreSQL preferred)
* Comfortable working across the stack with mobile teams when required
* Strong preference for candidates with industry experience


Why This Role

* Join a team building a brand-new product designed to genuinely help people
* Backed by a proven tech incubator with a strong history of launching successful products
* Early-stage team with plans to scale to 14–15 people within the next 6 months
* Work in a high-trust, no-ego culture where ownership and impact matter
* Competitive salary depending on experience, plus up to 10% performance-based bonus
* Strong benefits package

If you’re a Golang engineer who wants to build something that matters, have real ownership, and be part of an ambitious product journey from the very beginning, this is worth a conversation.

👉 Apply or message for a confidential discussion.

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