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- Tasks: Design and optimise high-performance UI frameworks for global applications.
- Company: High-growth software company revolutionising data visualisation technology.
- Benefits: Competitive salary, private healthcare, gym membership, and generous holiday allowance.
- Why this job: Tackle complex engineering challenges and push the limits of modern browsers.
- Qualifications: Mastery of JavaScript and TypeScript, with experience in scalable systems.
- Other info: Join a fast-paced, engineering-led culture with minimal bureaucracy.
The predicted salary is between 129000 - 172000 £ per year.
A high-growth software company is building the next generation of high-performance UI frameworks and data-intensive visualisation technology. Their products power mission-critical applications used by global enterprises, financial institutions, and technology firms, relied on every day by millions of users worldwide. They hire engineers who enjoy working close to the metal of the browser, solving problems that demand a deep understanding of algorithms, runtime behaviour, and performance at scale. This is not typical web development. It’s engineering at the limits of what modern browsers can do.
What you’ll work on:
- Design and optimise the core runtime of a high-performance UI framework used globally in real-time environments.
- Push the boundaries of JavaScript, TypeScript, and the browser rendering pipeline to deliver smooth performance on massive datasets.
- Solve complex engineering challenges around tree structures, recursion, memory allocation, rendering performance, and data-flow architecture.
- Own features end-to-end, design, build, test, document, and release.
- Contribute to libraries used by developers and enterprise engineering teams worldwide.
What you’ll bring:
- Deep, practical mastery of vanilla JavaScript and TypeScript.
- Strong exposure to C++, Java, or C#, with a systems-level mindset.
- A solid understanding of data structures, algorithms, and performance optimisation.
- Experience building complex, highly scalable systems — not just CRUD interfaces.
- Familiarity with frameworks such as React, Angular, or Vue, and a strong grasp of how they interact with the DOM.
- Ability to diagnose bottlenecks, eliminate memory leaks, and optimise rendering and throughput.
- An appreciation for clean software design, correctness, and maintainability.
Why this role matters:
- You’ll work on core engineering problems that most developers never get close to.
- You’ll join a team of deeply experienced engineers with backgrounds across low-level languages and large-scale systems.
- You’ll operate in a fast, engineering-led culture with minimal bureaucracy and high autonomy.
- You’ll enjoy a top-tier package, including:
- £150,000–£200,000 salary
- Private healthcare
- Pension
- Gym membership
- 25 days holiday + bank holidays
- High-end hardware budget
- Central London office with two days WFH each week.
If you want to engineer the foundations behind some of the world’s most demanding applications, this is the environment built for you. Get in touch!
TypeScript Software Engineer | London | Hybrid | Algorithms | Design Patterns employer: techstack Recruitment
Contact Detail:
techstack Recruitment Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land TypeScript Software Engineer | London | Hybrid | Algorithms | Design Patterns
✨Tip Number 1
Network like a pro! Reach out to current employees on LinkedIn or attend industry meetups. A friendly chat can give you insider info and maybe even a referral!
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those involving TypeScript and algorithms. This is your chance to demonstrate your expertise beyond the CV.
✨Tip Number 3
Prepare for technical interviews by practising coding challenges. Focus on data structures and algorithms, as these are key in high-performance environments. We recommend platforms like LeetCode or HackerRank.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who take that extra step to connect directly with us.
We think you need these skills to ace TypeScript Software Engineer | London | Hybrid | Algorithms | Design Patterns
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your deep understanding of TypeScript and JavaScript, as well as your experience with algorithms and performance optimisation. We want to see how your skills align with the core engineering challenges we face.
Showcase Your Projects: Include examples of complex systems you've built or contributed to, especially those that demonstrate your ability to solve intricate problems. We love seeing real-world applications of your skills, so don’t hold back!
Craft a Compelling Cover Letter: Use your cover letter to express your passion for high-performance UI frameworks and your eagerness to tackle engineering challenges. Let us know why you’re excited about this role and how you can contribute to our team.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates from our team!
How to prepare for a job interview at techstack Recruitment
✨Master the Basics
Before your interview, make sure you have a solid grasp of TypeScript and JavaScript fundamentals. Brush up on algorithms and data structures, as these will likely come up in technical questions. Practising coding challenges on platforms like LeetCode can help you get comfortable with problem-solving under pressure.
✨Showcase Your Experience
Be ready to discuss your past projects in detail, especially those involving complex systems or performance optimisation. Highlight specific challenges you faced and how you overcame them. This will demonstrate your hands-on experience and understanding of the engineering principles that matter for this role.
✨Understand the Company’s Tech Stack
Research the technologies and frameworks the company uses, such as React, Angular, or Vue. Familiarise yourself with how they interact with the DOM and be prepared to discuss your experience with these tools. Showing that you understand their tech stack will set you apart from other candidates.
✨Ask Insightful Questions
Prepare thoughtful questions about the team’s engineering challenges and the company’s approach to performance optimisation. This not only shows your genuine interest in the role but also gives you a chance to assess if the company culture aligns with your values and work style.
