Senior Software Engineer (C# / JavaScript)

Senior Software Engineer (C# / JavaScript)

Full-Time 60000 - 80000 £ / year (est.) Home office (partial)
Quanta

At a Glance

  • Tasks: Shape and scale systems while building reliable, scalable software.
  • Company: Dynamic international tech business with ambitious growth plans.
  • Benefits: Hybrid work model, competitive salary, and opportunities for professional development.
  • Other info: Be part of a pivotal scale-up journey with excellent career growth.
  • Why this job: Join a high-performing team and influence the future of technology.
  • Qualifications: Strong experience in software development, particularly in AWS and full-stack.

The predicted salary is between 60000 - 80000 £ per year.

We’re working with a growing, international technology business at a pivotal stage of its scale-up journey. With a high-performing team of around 40 people and ambitious growth plans, the company is now seeking a Senior Software Engineer to help shape the evolution of its systems and support the next phase of scale.

Reporting into the VP of Engineering, this role is focused on building reliable, scalable software and supporting the systems that underpin the company’s platform. While not a people management position, it carries significant influence across engineering and plays a central role in technical direction, delivery, and engineering standards.

  • Helping reshape and scale systems to handle significantly increased volume
  • Helping the team make pragmatic trade-offs between speed, quality, and maintainability
  • Embedding best practice in system design and software engineering
  • Contributing hands-on through coding, code review, and shipping to production regularly
  • Owning problems end-to-end, from design through to deployment and ongoing operation
  • Supporting system scalability, performance, and reliability as usage grows
  • Strong experience building and operating software in production, particularly in AWS
  • Experience working across the stack, including backend and frontend systems

Senior Software Engineer (C# / JavaScript) employer: Quanta

As a Senior Software Engineer at our dynamic London-based technology firm, you will be part of a vibrant and innovative team dedicated to driving growth and excellence in software development. We offer a collaborative work culture that values creativity and technical expertise, alongside opportunities for professional development and career progression. With a hybrid working model and a focus on employee well-being, we provide a supportive environment where your contributions directly impact the company's success during this exciting scale-up phase.

Quanta

Contact Details:

Quanta Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Software Engineer (C# / JavaScript)

Tip Number 1

Network like a pro! Reach out to your connections in the tech industry, especially those who work at companies you're interested in. A friendly chat can sometimes lead to job opportunities that aren't even advertised.

Tip Number 2

Show off your skills! Create a portfolio or GitHub repository showcasing your projects, especially those involving C# and JavaScript. This gives potential employers a taste of what you can do and sets you apart from the crowd.

Tip Number 3

Prepare for technical interviews by brushing up on coding challenges and system design principles. We recommend practicing with platforms like LeetCode or HackerRank to get comfortable with the types of questions you might face.

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 Software Engineer (C# / JavaScript)

C#
JavaScript
Software Engineering
System Design
AWS
Scalability
Performance Optimisation

Some tips for your application 🫡

Tailor Your CV:Make sure your CV reflects the skills and experiences that align with the Senior Software Engineer role. Highlight your experience in C# and JavaScript, and don’t forget to mention any work with AWS or scalable systems!

Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you’re excited about this role and how your background makes you a perfect fit. Be sure to mention your hands-on coding experience and your approach to system design.

Showcase Your Projects:If you’ve worked on relevant projects, whether personal or professional, make sure to include them. We love seeing real examples of your work, especially those that demonstrate your ability to build reliable and scalable software.

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’re considered for the role. Plus, it shows you’re keen to join our team!

How to prepare for a job interview at Quanta

Know Your Tech Stack

Make sure you’re well-versed in C# and JavaScript, as these are key for the role. Brush up on your knowledge of AWS and be ready to discuss how you've used these technologies in past projects.

Showcase Your Problem-Solving Skills

Prepare examples of how you've tackled complex problems in software design and engineering. Be ready to explain your thought process and the trade-offs you made between speed, quality, and maintainability.

Demonstrate Hands-On Experience

Since this role involves coding and code reviews, come prepared to discuss specific instances where you contributed to production code. Highlight any experience you have with end-to-end ownership of projects.

Understand the Company’s Growth Plans

Research the company’s ambitions and how they plan to scale their systems. This will help you align your answers with their goals and show that you’re genuinely interested in contributing to their success.