The Role
As a Senior Full Stack Engineer, you'll design scalable solutions, influence system architecture, mentor engineers, and maintain high-performance systems while collaborating closely with teams.
Summary Generated by Built In
We are expanding our engineering team to boost our development capacity and take our product to the next level. As a Senior Full Stack Engineer, you’ll play a central role in shaping the technical direction of our platform, building high-quality features, influencing system architecture, and ensuring we deliver a product that’s efficient, robust, and a delight for thousands of customers to use.
You’ll work closely with Product, Design, and customers to deeply understand problems, translate them into elegant technical solutions, and help decide not only what we build but how we build it for long-term success.
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.
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.
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 🍉
Zinc 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)
- Zinc 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 Zinc anniversaries 🥳
About
Who are Zinc? ⚡️We believe in better background checking: making them easy, instant and delightful - for candidates and HR teams across the world 🌎. Founded in 2017, we've grown year-on-year, reaching the Times Top 100 fastest growing businesses, the Deloitte EMEA fast 500 and winning the 2026 HSBC x WIRED Award in the Trailblazers Category.But we're not all work, our founders Luke and Charlotte are hot on being a culture first business. By this, we don't just mean an active calendar of company and team events (although these are great! 🍻 🥂🍕🎯) - our culture is defined by respect, fostering support for new ideas, promoting flexible work environments and operating with autonomy and low ego. 🔥💥❤️It's not just us who think they've done a stellar job - we've won awards for being a Top Place To Work in 2025 and 2026 from Tembo and SeedLegals 💚What are our values? 🧩🧩🧩Our values are: Pragmatism, Integrity, Empathy, Collaboration, Empowerment and Speed. We call them the PIECES that make Zinc (see what we did there 😂).How do we work? 🧑🏽💻👩🏼💻👨🏿💻We operate on a hybrid working model, with everyone coming to our Shoreditch Offices on Mondays and Thursdays, and working from home on the others. We believe this is a great balance between having space for deep work and in-person collaboration ⚡️⚡️⚡️
Skills Required
- Advanced skills with Node.js and modern frontend frameworks
- Deep expertise in TypeScript and JavaScript
- Proven ability in system design and architecture
- Strong experience with MongoDB and AWS
- Skilled in DevOps and CI/CD practices
- Proficient with testing tools like Jest and Cypress
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The Company
What We Do
Zinc builds automated reference and background checking tools designed to improve candidate experience and set new industry standards, offering automated pre-screening employment software for HR and recruiting teams to verify candidates' backgrounds and hire at scale.
