- Experience
- 3+ yrs
- Salary
- —
- Openings
- 1
- Posted
- 1 hour ago
- Work mode
- Hybrid
- Resume
- Required to apply
Where you'll work
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Job description
About Happl
Happl is pioneering the future of employee benefits infrastructure, leveraging AI to help teams worldwide design and manage flexible benefits encompassing allowances, insurance, recognition, and wellbeing—all integrated into a single smart platform. Supported by prominent investors like YCombinator and recognized among the UK’s top 100 startups for 2026, Happl is rapidly expanding.
Role Overview
As a Backend Engineer based in London (with hybrid work flexibility, expecting 2–3 days onsite weekly), you will develop and scale the critical backend systems that underpin a global AI-first benefits platform. Your work will directly impact how companies support their employees across payroll, finance, and benefits.
Key Responsibilities
- Architect and enhance backend services powering a global AI-driven benefits platform
- Maintain and develop core services including benefits management, allowances, payments, and reporting
- Create scalable and reliable data models ensuring system integrity
- Advance platform reliability, security, performance, and monitoring capabilities
- Design and automate workflows and internal rules to simplify complex processes
- Collaborate with Product, Frontend, Data, and Customer teams through the full development lifecycle
- Write clean, tested, production-ready code integrating AI tools for efficiency
- Contribute to decisions on architecture, technical standards, and engineering best practices
Candidate Requirements
- Minimum 3 years’ experience in backend or software engineering roles
- Proficiency in modern backend languages, specifically Golang and Typescript
- Experience designing and using APIs such as REST and event-driven architectures
- Strong understanding of databases, SQL and PostgreSQL, including data modeling
- Proven ability to build and scale production-grade systems
- Familiarity with cloud environments and CI/CD pipelines
- Comfortable working with integrations and external services
- Experience utilizing AI tools like ChatGPT or Claude in development workflows
- Effective communication skills for engaging both technical and non-technical stakeholders
- Detail-oriented, proactive, and comfortable taking ownership of responsibilities
Why Work at Happl
- Influence the evolution of employee benefits worldwide
- Competitive salary package and commission opportunities
- Equity stake in a rapidly growing startup
- Flexible hybrid working environment from the outset
- Access to Happl’s benefits platform for personal use
- Optional private health and dental insurance, including family coverage
- Wellbeing budget tailored to individual needs
- Learning and Development allowance to support career growth
- Immediate enrollment in a pension scheme
- Excellent progression prospects within a growing engineering team
Interview Process
- Initial 20-minute introductory call with COO & Chief of Staff
- 30-minute technical deep dive with Head of Engineering
- Completion of a short task
- Final 30-minute interview with CEO & Founder
Additional Details
Location: London, Holborn
Team: Engineering
Working model: Hybrid with 3 or more days onsite expected weekly