Senior Software Engineer (.NET)

Company Description
Software Mind develops solutions that make an impact for companies around the globe. Tech giants & unicorns, transformative projects, emerging technologies and limitless opportunities – these are a few words that describe an average day for us. Building cross-functional engineering teams that take ownership and crave more means we’re always on the lookout for talented people who bring passion and creativity to every project. Our culture embraces openness, acts with respect, shows grit & guts and combines employment with enjoyment.
Job Description
Project – the aim you’ll have
You will join an agile, international team of experienced developers and testers (from Poland and the UK) working on a strategic transformation of the IT ecosystem for a leading travel industry company.
The main goal?
Designing and building modern, scalable solutions from scratch - replacing outdated systems with new platforms built using best engineering practices.
As part of the team, you’ll have a real opportunity to:
co-create new solutions and architecture
develop Proof of Concepts (PoCs) and test ideas
drive technical discussions and decisions
collaborate with other senior and principal engineers
and leave your mark on a platform that will serve millions of users
The work is organized in 4-5 agile teams, each focused on a specific product area - allowing you to take ownership while collaborating closely across teams.
This is not about maintaining legacy systems — this is about building something new.
Role – How You’ll Contribute
Designing and building new features and solutions from the ground up
Creating Proof of Concepts (PoCs), technical spikes, and validating ideas
Replacing old systems with new architecture — not maintaining legacy code
Performing code reviews and sharing best practices
Participating in shaping product architecture and technical direction
Collaborating with other senior/principal developers, testers, BAs, Product Owners, and Scrum Masters
Supporting the team with your knowledge, experience, and technical leadership
Qualifications
Expectations – the experience you need
At least 5 years of commercial experience in C# and .NET Core
Experience with AWS DevOps tools and CI/CD processes
Solid understanding of software design principles, patterns (e.g., SOLID, DDD), and clean code practices
Experience creating tests (unit, integration, ideally also component or contract tests)
Practical experience with databases (SQL, MongoDB, NHibernate, Entity Framework, Azure Storage)
Real experience with AI tools
Additional Skills – The Edge You Have
Knowledge of front-end technologies: Angular (12+), JavaScript, TypeScript, CSS, Git — although in the project you’ll be working closely with a dedicated front-end developer
Experience designing new systems or working on greenfield projects
Familiarity with event-driven architecture and distributed systems
Knowledge of cloud solutions, especially AWS and Azure
Willingness to share knowledge, mentor other developers, and actively participate in technical discussions
Someone who isn't afraid to admit they don't know something but can work with the team to find a solution
Additional Information
What We Offer
Flexible and remote cooperation options
International projects with leading global clients
Travels related to international projects
Non-corporate atmosphere
Access* to language classes
Access* to knowledge-sharing initiatives
Access* to private healthcare and life insurance
Access* to multisport card
The availability and terms of individual benefits may vary depending on the chosen form of cooperation.
#WORLD

Work arrangement
Yes