Senior Software Engineer (London)

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About Borderless
We believe in a world where borders are no longer barriers. Since launching in 2023, weve helped 400+ UK businesses and thousands of individuals across healthcare, construction, finance, and more. Our digital platform streamlines the UK sponsorship process using automation and expert support.
Backed by Entrepreneur First and Backed.VC, were scaling fast and engineering is core to our ability to deliver.
Role: Senior Software Engineer
We\’re hiring a Senior Software Engineer to help us evolve the Borderless platform. This is a hands-on role where youll be writing clean, scalable code while contributing to major rebuild efforts and long-term engineering projects.
You\’ll work closely with our Engineering Manager, Product, and the wider cross-functional team to improve platform performance, reliability, and design. This role is essential to unlocking team velocity and addressing key technical constraints as we scale.
What Youll Be Doing

• Contribute to the rebuild and refinement of our core platform
• Write clean, scalable, well-documented code in TypeScript, React, and SQL
• Design and maintain complex data models for performance and extensibility
• Collaborate cross-functionally with Product, Ops, CS, and Engineering
• Identify and resolve platform bottlenecks, technical debt, and stability issues
• Contribute to architectural and data design decisions

You Should Apply If

• You have strong experience building full-stack web applications in TypeScript and React
• Youve worked with large-scale, complex relational databases and understand trade-offs around normalisation, query efficiency, and data design patterns
• You think deeply about the structure and performance of data (data access vs data query trade-offs)
• Youre a proactive problem-solver who enjoys collaborative work across multiple functions
• Youre excited by the opportunity to shape the foundation of a growing product and team
• You want to grow with the business this is a high-impact role with scope to move into tech leadership as we scale

Tech Stack
Weve listed our current tech stack below but please do not be put off from applying if you havent worked with every single technology!

• Typescript
• AWS
• React
• Node
• PostgreSQL

Interview Process

• 30 – minute screening call with Talent
• 60 – minute interview with Engineering Manager
• 60 – minute technical interview (pair programming task)
• 90 – minute Final onsite with Engineering Manager, CTO, and CEO

Borderless Benefits
Culture & Work Setup
3 days in-office (Mon/Tue/Thu), 2 days remote
Monthly in-office lunches
Monthly team socials
Annual offsite (last one: Lisbon, this year: Majorca!)
Time Off & Flexibility
25 days holiday + 3 extra days between 25th Dec and 31st Jan
1-week per year work-from-anywhere policy
Growth & Development
500 annual L&D budget
6-month performance reviews and promotion cycles
Wellbeing & Equipment
Laptop + peripherals
Cycle To Work scheme
Smart Pension
Mental health support via Spill
Gym in Shoreditch Exchange
Onsite Barista

Seniority level

• Seniority levelMid-Senior level

Employment type

• Employment typeFull-time

Job function

• Job functionEngineering and Information Technology
• IndustriesTechnology, Information and Internet

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