Senior Full Stack Engineer
SKILLS
FULL DESCRIPTION
[Employer hidden — view at passion-project.co.uk]
Software Engineering
London, UK
GBP 70k-80k / year + Equity
Posted on Mar 20, 2026
Key Responsibilities ️
Building powerful features – Design and deliver high-impact solutions that are clean, scalable, and built to last, delighting thousands of customers.
Shaping the big picture – Work with Product, Design, and customers to define *what* we build and *how* we build it for long-term success.
Keeping things running smoothly ️ – Maintain, optimise, and secure our systems so they perform at their best, even at scale.
Problem-solving like a pro – Lead the charge on tricky technical challenges, turning complex problems into elegant, maintainable solutions.
Mentoring and leading – Support and guide other engineers, sharing knowledge and raising the technical bar for the team.
Staying ahead of the game – Keep up with new tools, trends, and best practices, helping us continuously evolve our stack and processes.
Owning your work end-to-end – Take full responsibility from initial idea to production, making sure every detail delivers value to users.
Skills, Knowledge and Expertise
Hard skills ⚡
Full Stack Development – Advanced skills with Node.js (Express/Nest.js) and modern frontend frameworks like Vue/Nuxt or React/Next, building smooth, scalable experiences end-to-end.
TypeScript & JavaScript Mastery – Deep, hands-on expertise delivering production-grade applications using modern JS/TS best practices.
System Design & Architecture ️ – Proven ability to create scalable, maintainable, and high-performance systems that stand the test of time.
Database & Cloud ☁️ – Strong experience with MongoDB and AWS services (Lambda, S3, API Gateway) for robust, cloud-native solutions.
DevOps & CI/CD – Skilled at creating and managing pipelines, automated deployments, and infrastructure-as-code to keep things shipping smoothly.
Testing & Quality Assurance – Proficient with tools like Jest and Cypress to ensure quality, reliability, and confidence in every release.
Soft skills ✨
Highly Collaborative – Thrives in cross-functional teams, working closely with engineers, designers, and product to deliver exceptional results.
Product-Minded – Always focused on customer impact, thinking beyond code to how features improve the user experience and meet business goals.
Clear Communicator ️ – Able to explain technical decisions simply, provide constructive feedback, and make complex ideas accessible to all stakeholders.
Kind & Supportive ❤️ – Builds a positive, respectful team culture, lifting others up and working with humility and empathy.
What we offer
[Employer hidden] offers a chance to work on a product that brings a fresh perspective on data ownership in hiring
- 24 days holiday + Bank Holidays + your birthday off
- £1200 annual benefits allowance (ThanksBen, from month 2)
- Early finish Fridays (16:00)
- Yearly company retreat abroad ✈️
- 30 days to work from anywhere
- Enhanced Maternity, Paternity, and Adoption Leave (2 months full pay, then statutory)
- Statutory pension with NEST (3% employer, 5% employee)
- [Employer hidden] shares, issued through the EMI Scheme
- Unlimited access to MoreHappi coaching
- Company socials, quarterly team socials, free Monday lunches
- Nursery workplace benefit scheme (Yellownest)
- Option to lease an electric car through Electric Car Scheme
- Celebrated [Employer hidden] anniversaries
About [Employer hidden]
Who we are ⚡
[Employer hidden] builds automated reference and background checking tools designed to improve candidate experience and set new industry standards. Founded in 2017 by a team with extensive HRTech experience, [Employer hidden] is an early-stage startup rapidly growing as it redefines efficiency, transparency, and fairness in background checks.
Read more about our story here: https://zincwork.com/mission
We're a culture first company, by this we don't just mean an active calendar of both company and team organised events (which we do have ),[Employer hidden]'s culture is defined by a respectful and autonomous approach to all employees, fostering support for new ideas, promoting a flexible work environment, and operating within a flat structure. While socials, lunches, and events enhance the experience, the core of [Employer hidden]'s culture drives employees to embrace innovation, share successes, and feel motivated about the company's future.
We recently redefined our company values:
The pieces that make [Employer hidden]: Pragmatic, Integrity, Empathy, Collaborate, Empowered, Speed.
Our Hiring Process
Stage 1:
Applied
Stage 2:
Talent Discovery Call ✨
Stage 3:
Google Meets Interview
Stage 4:
Final In-Person Interview ♀️♂️
Find out more
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