Senior .NET Engineer

About Planet

Planet is a global provider of integrated technology and payments solutions for retail and hospitality customers.

We create great experiences for the millions of people who use our payments, software, and tax-free solutions every minute of every day.

Planet empowers its customers to deliver great customer experiences by combining payments and software in ways that drive greater loyalty, increase revenue and save time.

Founded over 35 years ago and with our headquarters in London, today we have more than 2,500 employees located across six continents serving our customers in more than 120 markets.

Role overview:
Planet Portal is looking for a talented .NET developer who has experience in developing backend APIs using ASP.NET Core, MongoDB and PostgreSQL databases, Kafka messaging and AWS cloud.

You will be responsible for designing, developing, testing, deploying and maintaining scalable and reliable applications that meet the business requirements and follow best practices. You will also collaborate with other developers, QA engineers, DevOps engineers and product managers in an agile environment, as well as supporting the quality of our engineering work across multiple codebases and operational processes.

What you will do:

• Enhance Planet's unified payment platform.

• Work on new projects and enhancements to current applications.

• Work autonomously in agile teams and advise on solutions.

• Automate the development, test & deployment processes.

• Produce documentation on projects delivered for reference, audit and compliance purposes.

• Develop applications that communicate with external systems (e.g. credit card payment services).

Who you are:

• Architecture & Code Craftsmanship

• Foundations: You have a deep understanding of software engineering fundamentals (typically backed by a degree and 5+ years of experience) and a passion for patterns like DDD, TDD, GRASP, and SOLID.

• Tech Stack: You are a seasoned Full-Stack .NET engineer who knows the ins and outs of ASP.NET Core, RESTful APIs, and OpenAPI.

• Toolkit: You know your way around SQL (PostgreSQL) and NoSQL (MongoDB). Bonus points if you love open-source tools like FluentAssertions, FluentValidation, MediatR, or Hangfire.

• Cloud & Modern DevOps Culture

• Scale & Resilience: You’ve built high-availability systems and know how to keep them healthy using monitoring tools like Datadog/Coralogix.

• Cloud-Native: You are comfortable in the AWS ecosystem and fluent in containerization (Docker, Kubernetes).

• Automation First: You believe in seamless delivery and have experience building automated CI/CD pipelines (we use GitHub Actions).

• Bulletproof Code: You write meaningful unit, integration, and UAT tests using xUnit and SpecFlow.

• Teamwork & Mindset

• Problem Solver: You excel at breaking down complex problems and turning them into clear, customer-centric solutions.

• Agile Owner: You thrive in an Agile/Scrum environment, taking true ownership of your work and championing a culture of continuous improvement.

• Code as Communication: You have excellent communication skills and believe that clean, well-written code is the best way to share intent with your peers.

Why Planet:

Planet is an equal opportunity employer where diversity is valued, and all employment is decided based on qualifications, merit, and business need.

Come and grow your career in the most exciting, fast paced technology market, with a business that delivers feel-good connected commerce.

fast-pacedWe would love to hear from you – Apply now.

At Planet, we embrace a hybrid work model, with three days a week in the office.

Reasonable accommodations may be made in order to allow for an individual to perform the essential functions of this role successfully.