Senior Software Engineer
We are Harper, a fast-growing Series A startup at the intersection of eCommerce and Fintech .
Our mission is to keep personal service at the heart of the digital shopping experience by enabling elevated Try Before You Buy experiences for some of the world’s leading fashion retailers.
We’re looking for a Senior Software Engineer to shape the future of Harper’s technology. This is a hands-on role focused on building and improving our core systems to ensure reliability, scalability, and a seamless experience for customers and brand partners.
You’ll work closely with our CTO and product team to develop new features, improve system performance, and solve complex technical challenges. You should be comfortable working across the stack, writing clean, maintainable code, and taking ownership of your work.
Who We’re Looking For
- We’re looking for a collaborative and experienced engineer to join us on our journey.
- You’ve worked in/with startups and understand the pace and ownership that comes with that.
- You’re not expected to know all our tech, but you’ll be confident and proficient in your core areas.
- You take ownership of your work and communicate clearly.
- You’re curious about AI tooling and excited to help the team learn and grow in this space.
- You have experience with A/B testing, analytics tools, and growth-focused product development.
- You understand performance optimisation, event driven architecture, API integrations, and how to improve user experience.
- You’re comfortable working autonomously and driving projects from idea to delivery.
- You can analyse data and use it to inform decisions.
- Experience with AWS is a plus.
- Familiarity with e-commerce platforms like Shopify, Centra or BigCommerce is a plus.
Who We Are
We’re a small, ambitious product team of experienced technologists.
We care deeply about the products we build and take full ownership of them.
We experiment regularly and iterate quickly.
We build and evolve new products that make a difference to our customers, our team, and the business.
We care about scale. Our business is growing rapidly and we use modern, best-practice approaches to stay ahead.
We believe in collaborative design and architecture, and empower each other to lead.
We’re embracing AI development tools and are looking for measurable gains from using them. If we achieve 2x speed regularly, we consider that a success.
Package
Competitive salary of £85,000
32 days holiday (take public holidays whenever you like) with a 3-day carryover policy
Macbook Pro
Hybrid working
Regular team socials
£600 annual wellbeing allowance
Interview Process
- 30 minute intro videocall – we’ll get to know you and tell you more about Harper and the role.
- 90 minute culture and tech fit interview – we’ll dive into your experience and motivations.
- Offer 🎉
Recommended Jobs
Sen Teaching Assistant
Stoke Newington Hackney Full-time | Monday to Friday, 8:30am - 4:00pm Start Date: After October Half-Term Contract: Long-term role School Type: One-form entry primary school We are seeking a compassi…
VAT Manager: Financial Services Specialism
Job Details This firm has a strong and growing presence in the financial services space, particularly private equity and asset management. They’ve identified they would really welcome someone i…
MLRO (Money laundering reporting officer)
Hybrid role to be based in our Edinburgh or London office About Us Seccl is the Octopus-owned embedded investment platform that’s on a mission to helping more people to invest – and invest well.…
Primary School Teacher
Primary Teacher - Flexible Adhoc Supply South Croydon | Zero Hours Contract | Immediate / flexible start A welcoming and well-regarded primary school in South Croydon is seeking a flexible Primary Te…
Global Account Executive (Enterprise)
Job Title: Global Account Executive Job Title: Account Executive - Enterprise (Global Health & Wellbeing) Company: Physitrack Group Location: London (in-person) Salary: £75–80k base …
Financial Adviser
A flexible, desk-based advice role with a respected firm, offering autonomy, client engagement, and work-life balance. The Private Office is seeking a Financial Adviser to take ongoing servicing res…
Senior Corporate Solicitor - Fully Remote
My client is recruiting for an experienced Corporate Solicitor with 5+ years PQE to join their team on a fully remote basis. This is a rare opportunity to handle high-quality work in a supportive a…
Human Resources Advisor in Greater London
Job description Job Description Position title: HR Advisor Department: Human Resources Report to: HR Manager Location: Office based - Unit 3.1D - 3.1E, 20-22 Union Road, London, SW…
Marketing Manager
Marketing Manager &##128205; London, N4 &##127963;️ 4 days in our office, 1 day from home &##128176; £50-60k per annum About Shellworks At Shellworks, we’re on a mission to make plastic wa…
Governess/Nanny
Our Client, who's main residence is in Chelsea, is currently searching for a live-out Nanny/Governess to look after and support their 6 year old daughter. The role is to start ASAP and continue on a …