Senior Full Stack Engineer

Zinc; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Hybrid working (2 days per week in Luc

EMI options for real ownership

£1200 annual benefits allowance

Thanks Ben prepaid card

Early finish Fridays

Apple laptop & home setup

24 days holiday + birthday off

Enhanced parental leave

Spill coaching access

Regular team socials

Annual retreat to Italy

Job summary

Zinc is expanding its engineering team in London to accelerate product development. As a Senior Full Stack Engineer, you will shape architecture, build scalable features, and own end-to-end delivery for thousands of customers.

You will collaborate with Product, Design and customers, mentor peers, and stay ahead with new tools and best practices to continuously evolve our stack.

Qualifications

• Experience with Node.js and modern frontend frameworks to build end-to-end features.
• Ability to design scalable, maintainable architectures for complex systems.
• Hands-on experience with MongoDB and AWS services for cloud-native apps.
• Proficient in CI/CD pipelines and infrastructure-as-code practices.
• Strong testing discipline with Jest and Cypress or similar tools.

Responsibilities

• Build high-impact features and shape the technical direction of the platform.
• Collaborate with Product, Design and customers to translate problems into technical solutions.
• Maintain, optimize and secure systems at scale.
• Lead and mentor engineers, raising technical standards.
• Own work end-to-end from idea to production and delivery.

Skills

Full Stack Development

System Design

Cloud & Database

DevOps & CI/CD

Testing & QA

Collaboration

Product Minded

Clear Communication

Mentorship

Tools

Node.js (Express/Nest.js)

Vue/Nuxt

React/Next

MongoDB

AWS (Lambda, S3, API Gateway)

CI/CD tooling

Job description

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 onlywhat we build buthow we build it for long-term success.

• 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

• 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.
• 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.

Company Benefits

• Hybrid working (2 days per week in London)
• EMI options for real ownership in the business
• £1200 annual benefits allowance
• Thanks Ben prepaid card — spend on what matters to you (wellbeing, learning, food, travel, and more)
• Early finish Fridays
• Apple laptop and the latest tech for your home setup
• 24 days holiday + your birthday off (+ bank holidays)
• Enhanced Maternity, Paternity & Adoption Leave
• Access to Spill - free coaching or therapy for work and personal goals
• Regular team socials
• Annual retreat (this year we’re heading to Italy)