Happl
Backend Engineer
4mo ago
EuropeRemoteai
Build and scale backend services for a global AI-first employee benefits platform.
Responsibilities
- As a Backend Engineer at Happl, your mission is to build the systems that power a global, AI-first benefits platform.
- You’ll design, build, and scale backend services that are reliable, secure, and performant, enabling our product teams to move fast while supporting complex real-world use cases across payroll, finance, and employee benefits.
- This role is for someone who enjoys ownership, thrives in fast-moving environments, and wants to build foundational systems that directly impact how companies support their people.
Conditions
- At Happl, we help global teams design, manage, and scale benefits that actually work for their people by using AI, across flex allowances, benefits, insurance, recognition, and wellbeing, all in one intelligent platform.
- Happl is backed by leading investors such as YCombinator, 6Degrees Capital, and more, known for backing leading companies such as Deel, Rippling, Airbnb, Coinbase, Dropbox, and most recently was awarded a place in the UK’s top 100 startups for 2026.
- Help shape the future of employee benefits
- Competitive base salary and commission
- Meaningful equity in an early stage growing business
- Flexible hybrid working from day one
- Access to your own Happl benefits platform
- Optional enrolment in Private Health Insurance
- Optional enrolment in Dental insurance, including family cover
- A flexible Wellbeing budget to spend on whatever wellbeing means to you
- Learning & Development (L&D) allowance
- Pension scheme from day one
- Rapid career progression in a scaling engineering team
Other
- This role sits within our Engineering team and works closely with Product, Frontend, Data, and Customer teams across the full development lifecycle.
- You’ll help shape how we build and scale our backend by focusing on:
- Designing and scaling the backend architecture powering a global, AI-first platform
- Building and owning core services across benefits, allowances, payments, and reporting
- Developing scalable data models and ensure integrity across systems
- Improving platform reliability, performance, security, and observability
- Automating workflows and Go Rules to streamline complex operations
- Collaborating closely with product and frontend teams to ship end-to-end features
- Writing clean, well-tested, production-ready code
- Using AI tools to accelerate development and iteration
- Contribute to architecture, technical decisions, and engineering standards
- You’ll play a key role in ensuring Happl’s backend scales as our customer base, features, and global footprint grow.
- 3+ years experience as a Backend or Software Engineer
- Strong experience with modern backend languages and frameworks (must have a working ability in Golang and Typescript)
- Experience designing and consuming APIs (REST, event-driven systems)
- Solid understanding of databases (SQL / PostgreSQL) and data modelling
- Experience building and scaling production systems
- Familiarity with cloud infrastructure and CI/CD workflows
- Comfortable working with integrations and third-party services
- Experience using AI tools (e.g. ChatGPT, Claude) as part of your workflow
- Clear communicator who works well with both technical and non-technical stakeholders
- Proactive, detail-oriented, and comfortable taking ownership
- If you don’t meet every requirement but feel this role fits your trajectory, we’d still love to hear from you.
- Call 1: 20-min Intro call with Ben (COO & CoS)
- Call 2: 30-min deep dive with Lee (Head of Engineering)
- Short Task
- Call 3: 30-min deep dive with Ben T (CEO & Founder)
- Location: London, Waterloo Team: Engineering Working arrangement: Hybrid (3+ Days in Office)
- #BS-L1