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.NET Engineer

Job in City Of London, Central London, Greater London, England, UK
Listing for: YLD Limited
Contract position
Listed on 2026-01-02
Job specializations:
  • Software Development
    Software Engineer
Job Description & How to Apply Below
Position: (Contract) .NET Engineer
Location: City Of London

Position: Contract Senior Software Engineer (C#)
Employment Type: Contract (B2B)
Contract Length: 6 months (with potential for extension)
Location: Remote (EU based, GMT timezone)

About YLD:

Our goal is to help our clients keep moving forward. We work with them to build the skills and capabilities they need to stay ahead of the competition, and we know our success only happens when they succeed. We’re a team of curious, talented people, and we’re committed to making YLD a place where great people want to work, grow, and stay.

We’re a remote-first consultancy specialising in software engineering, product design, and data. Our teams are based across London, Lisbon, and Porto, and we create digital solutions that continue to deliver value long after our work is done.

About the role:

As a Senior Software Engineer at YLD, you’ll be part of a client team building innovative products. We’re looking for someone curious, passionate, driven, and enthusiastic. You should be skilled in problem-solving and experienced in designing scalable, resilient, and fault-tolerant architectures. You’re also an effective communicator and a strong team player. Together with your team, you’ll thrive in a fast-paced engineering environment, delivering outstanding results and exciting projects.

Your day-to-day responsibilities will look like this:

  • Architecting, designing, building, and delivering highly available, always-on, zero-downtime API products and solutions;
  • Collaborating with engineers, product owners, and other colleagues to seek exciting and results-oriented problems for delivering value;
  • Writing clear, maintainable code that will scale;
  • Contributing to production operation and monitoring of systems, and aware of SLAs;
  • Learning, growing, and mentoring other engineers through code reviews and pair programming to accelerate their technical mastery;
  • Proactively looking for ways to improve team processes;
  • Driving good practices within your team and making an impact on the whole department.

Preferred qualifications:

  • Experience in implementing high-quality cloud software solutions, i.e. Azure, AWS, GCP;
  • An awareness of a variety of cloud architectures;
  • A good understanding of consistency, reliability, scalability of systems without downtime;
  • An understanding of design patterns and API design;
  • Experience in system design, design patterns, API design and implementation of large scale distributed systems in the cloud, from IaaS containers to PaaS;
  • Experience in system reliability and stability patterns;
  • Hands-on experience with both SQL and No

    SQL databases;
  • The know-how to write readable, idiomatic, and maintainable C#;
  • Experience implementing sophisticated API products;
  • Experience with agile methodologies.

Nice to haves:

  • Experience in building high-performance API products;
  • Experience launching APIs to both internal and external consumers;
  • Experience building cloud systems (specially Azure).

You should apply if you are:

  • A T-shaped engineer, but will major in C#;
  • Self-motivated, proactive and always looking for ways to improve and develop yourself;
  • A good communicator, both in writing and verbally. You’ll be able to explain technical ideas and concepts in business-friendly language;
  • Detail oriented;
  • Possess strong problem-solving skills that balance innovation with pragmatic technology choices to solve business needs;
  • Used to working in a team-oriented, collaborative environment;
  • Analytical and problem-solving-oriented;
  • A genuine believer in diversity and fairness.

What you’ll get in return:

  • The chance to work with a forward thinking, ethical, and fun group of people and to develop and grow your skills in a fast-moving business

Our typical Recruitment Process looks like this:

  • 1st Interview with someone from the Talent team (30/45 mins)
  • Technical Interview with our Senior Developers (1h30)
  • Meet our Client Partner and Engineering Operations Manager (30 mins)

We live and breathe our values, and know you will too:

  • Growing every day
  • Including everyone
  • Relationships built on honesty and ethics
  • Inspiring solutions
  • Winning together

We’re an equal-opportunity employer and value diversity in all its forms. We do not discriminate on the basis of race, religion, colour, national…

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