Senior Fullstack Developer

Senior Fullstack Developer

Full-Time 36000 - 60000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and develop enterprise-grade SaaS features to combat cyber threats.
  • Company: Fast-growing cybersecurity scale-up trusted by Fortune 500s.
  • Benefits: Competitive pay, great perks, and endless growth opportunities.
  • Why this job: Join a mission-driven team and make a real impact in cybersecurity.
  • Qualifications: 5+ years in SaaS development with strong backend and frontend skills.
  • Other info: Work fully remote and collaborate with industry experts.

The predicted salary is between 36000 - 60000 £ per year.

Overview

Senior Full Stack Engineer | Cybersecurity Scale-Up | Fully Remote (Global)

Want to use your full stack skills to help stop real-world cyber attacks? This is your chance to join a fast-growing, VC-backed cybersecurity innovator, recognised by Gartner and trusted by Fortune 500s and critical infrastructure providers worldwide.

They’re building cutting-edge technology that helps organisations continuously understand how they could be compromised — and they’re scaling fast.

Now, they’re looking for a Senior Full Stack Engineer to join their Client Facing Applications (CFA) team, where you’ll help shape the customer experience for some of the world’s largest enterprises.

What you’ll be doing:

  • Designing and developing enterprise-grade SaaS features across backend and frontend systems
  • Building secure, scalable, and high-performing APIs and services (NestJS, GraphQL, REST)
  • Creating data-driven dashboards and UIs with React, Next.js, and Chakra UI
  • Translating product and design requirements into elegant, maintainable solutions
  • Troubleshooting and optimising performance across the full stack
  • Collaborating with product managers, designers, and engineers to deliver seamless client experiences
  • Driving continuous improvements in engineering practices, tooling, and processes

What they’re looking for:

  • 5+ years’ experience building enterprise SaaS products (ideally in cybersecurity or data-heavy environments)
  • Strong backend development with TypeScript, NestJS, Sequelize ORM, GraphQL, REST APIs
  • Frontend expertise with ReactJS, NextJS, Typescript, Chakra UI
  • Experience with MySQL and NoSQL databases
  • Familiarity with messaging/event-driven systems (Kafka)
  • Ability to work closely with designers (Figma) and translate complex business logic into intuitive UI/UX
  • Problem-solver with strong debugging, troubleshooting, and optimisation skills
  • Thrives in high-growth startup/scale-up environments, with adaptability and ownership mindset

Bonus points if you have:

  • AWS or Kubernetes experience
  • Workflow engine knowledge (Xstate, Argo Workflows)
  • Broader understanding of networking and infrastructure

Why join?

Competitive compensation & benefits

A key role in a high-growth cybersecurity scale-up solving global challenges

Cutting-edge tools and kit to help you succeed

Endless growth opportunities — internal promotion is core to their culture

Collaborate with cybersecurity experts and work on problems that really matter

This isn’t just another engineering role. It’s your chance to build technology that protects enterprises from real-world attacks while shaping the future of offensive security at scale.

Interested? Apply now — this one won’t stay open for long.

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Senior Fullstack Developer employer: XACT PLACEMENTS LIMITED

Join a dynamic and innovative cybersecurity scale-up that is at the forefront of protecting enterprises from real-world cyber threats. With a fully remote work culture, competitive compensation, and a strong emphasis on internal growth opportunities, this company fosters an environment where your contributions directly impact global security challenges. Collaborate with industry experts and leverage cutting-edge technology while enjoying the flexibility and support needed to thrive in your career.
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Contact Detail:

XACT PLACEMENTS LIMITED Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Fullstack Developer

✨Tip Number 1

Network like a pro! Reach out to your connections in the cybersecurity field and let them know you're on the lookout for opportunities. A personal recommendation can go a long way in landing that dream job.

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your best projects, especially those related to SaaS or cybersecurity. This gives potential employers a taste of what you can do and sets you apart from the crowd.

✨Tip Number 3

Prepare for interviews by brushing up on your technical skills and understanding the company's products. Be ready to discuss how your experience aligns with their needs, especially in building secure and scalable applications.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive about their job search!

We think you need these skills to ace Senior Fullstack Developer

Full Stack Development
SaaS Development
Backend Development
TypeScript
NestJS
Sequelize ORM
GraphQL
REST APIs
Frontend Development
ReactJS
Next.js
Chakra UI
MySQL
NoSQL Databases
Debugging Skills
Problem-Solving Skills
Adaptability

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience with enterprise SaaS products and the specific technologies mentioned in the job description. We want to see how your skills align with what we're looking for!

Craft a Compelling Cover Letter: Use your cover letter to tell us why you're passionate about cybersecurity and how your background makes you a great fit for our team. This is your chance to show off your personality and enthusiasm!

Showcase Your Projects: If you've worked on relevant projects, whether personal or professional, make sure to include them. We love seeing real-world applications of your skills, especially in areas like React, NestJS, and API development.

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands and shows us you're serious about joining our team!

How to prepare for a job interview at XACT PLACEMENTS LIMITED

✨Know Your Tech Stack

Make sure you’re well-versed in the technologies mentioned in the job description, like TypeScript, NestJS, and React. Brush up on your knowledge of building secure APIs and data-driven dashboards, as these will likely come up during technical discussions.

✨Showcase Your Problem-Solving Skills

Prepare to discuss specific challenges you've faced in previous roles, especially in high-growth environments. Be ready to explain how you approached debugging and optimisation, as this is crucial for a Senior Full Stack Engineer.

✨Understand the Company’s Mission

Familiarise yourself with the company’s focus on cybersecurity and their innovative approach. Being able to articulate why you want to work in this field and how you can contribute to their mission will set you apart from other candidates.

✨Prepare Questions for Them

Think of insightful questions to ask about their engineering practices, team dynamics, and future projects. This shows your genuine interest in the role and helps you assess if the company is the right fit for you.

Senior Fullstack Developer
XACT PLACEMENTS LIMITED
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