Senior Full Stack Engineer

🔒 Confidential Employer
Posted 24 March 2026
LOCATION
London, UK
TYPE
Full-time
LEVEL
Mid-Senior level
SALARY
£80,000 / year
CATEGORY
Software Engineering
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion

SKILLS

Node.js Vue/Nuxt React/Next TypeScript JavaScript MongoDB AWS DevOps

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

Not quite right? Register your interest to be notified of any roles that come along that meet your criteria.

Register Your Interest

Sign up free — access 45,000+ UK sponsor-licensed jobs