Principal Software Engineer C# .Net AWS - FinTech

Principal Software Engineer C# .Net AWS - FinTech

Full-Time Home office (partial)
Client Server Ltd.

At a Glance

  • Tasks: Architect and build scalable solutions using C# .Net and AWS, driving AI adoption.
  • Company: Join a leading FinTech disruptor with a collaborative and innovative culture.
  • Benefits: Competitive salary up to £120k, bonus, pension, and 25+ days holiday.
  • Other info: Hybrid work model with flexible home working options.
  • Why this job: Make a real impact in a senior role with visibility and career progression.
  • Qualifications: Strong C# skills, AWS knowledge, and interest in AI technologies.

London, Greater London | £110k - £130k per year

Would you like to join a growing and profitable scale-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression? As a Principal Software Engineer you will architect and build highly performant and scalable solutions using the Microsoft tech stack and SOLID design principles, collaborating with cross functional Agile project teams in 2 week Sprints. You'll be an advocate of best practice and ensure software is delivered to schedule.

There's a host of new features and development work and you'll also help to drive the adoption of AI within the business, introducing things like chat bots and exploring the use of AI to make process improvements. This is an impactful role where you'll report into and collaborate with the CTO, you'll have a lot of visibility and quickly see the results of your work.

Location / WFH

There's a hybrid policy, with two days in the brand new London offices and flexibility to work from home two days a week (Thursdays and Fridays).

About you

  • You are an experienced Software Developer / Engineer with a strong knowledge of modern best practice.
  • You have strong C# backend development skills, ideally also Python coding skills.
  • You have a good knowledge of AWS.
  • You have experience of working on highly scalable systems.
  • You have a strong knowledge of Computer Science fundamentals such as OOP, Data Structures, Design Patterns.
  • You have experience with, or a strong interest in Artificial Intelligence and are keen to explore the possibilities further e.g. ChatGPT, Claude, Cursor, Copilot.
  • You have strong analysis and problem solving skills alongside organisation and planning abilities.
  • You have business acumen and advanced communication / stakeholder management skills.

What's in it for you

As a Principal Software Engineer you will earn a competitive package including:

  • Salary to £120k
  • Bonus (c20%)
  • Pension (5% employer contribution)
  • 25 days holiday (increasing to 27 after two years and 30 after)
  • Life Assurance (4x base salary)
  • Employee Assistance Programme
  • Range of training, career development and supported learning
  • Impactful role working on cutting edge technology

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

Principal Software Engineer C# .Net AWS - FinTech employer: Client Server Ltd.

Join a dynamic and innovative FinTech scale-up in London, where as a Principal Software Engineer, you will have the opportunity to shape the future of technology while enjoying a flexible hybrid work environment. With a strong focus on employee growth, competitive salaries, and a commitment to diversity, this company fosters a collaborative culture that encourages continuous learning and impactful contributions to cutting-edge projects.

Client Server Ltd.

Contact Details:

Client Server Ltd. Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Principal Software Engineer C# .Net AWS - FinTech

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Client Server Ltd. or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Client Server Ltd..

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Client Server Ltd..

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Client Server Ltd. that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Principal Software Engineer C# .Net AWS - FinTech

C#
Python
AWS
SOLID Design Principles
Agile Methodologies
Scalable Systems Development
Computer Science Fundamentals

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Client Server Ltd..

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Client Server Ltd. and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at Client Server Ltd.

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Client Server Ltd. uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.