.Net Fullstack Developer - Tieto Tech Consulting (m/f/d)

Do you have a strong software engineering background, a passion for problem-solving, and want to join of the largest tech companies in the Nordics? Then this is the role for you!

We are looking for a

Senior Software Engineer

who wants to be part of Tieto Tech Consulting. Tieto Tech Consulting works as a true partner, solving clients' toughest technology challenges and delivering reliable outcomes that drive measurable results. By merging data, cloud, AI and design with deep industry expertise, we create impactful yet intuitive digital solutions that empower people and move businesses forward.

As part of our engineering team, you will contribute to the design, development, and delivery of scalable, high-quality software solutions. You will work across the full stack and play a key role in delivering quality software, solving complex technical challenges, and driving engineering best practices throughout the software development lifecycle.

When joining Tieto Tech Consulting as a Senior Software Engineer

• You join a skilled team of software engineers and technology professionals where you learn new things together with your colleagues.
• You design, develop, and maintain robust backend services and APIs using .NET, C#, ASP.NET Core, and Java.
• You build and enhance front-end features using JavaScript, TypeScript, React, Angular, or similar technologies.
• You develop and maintain automated end-to-end test suites using Playwright with Cucumber.
• You practice Test-Driven Development (TDD) by writing unit and integration tests before or alongside feature development.
• You collaborate closely with Product Managers, Architects, QA Engineers, and other stakeholders throughout the software development lifecycle.
• You participate in code reviews and help enforce coding standards, security best practices, design patterns, and clean code principles.
• You troubleshoot and resolve complex production issues across multiple layers of the technology stack.
• You analyze, optimize, and tune database queries for performance, scalability, and efficiency.
• You contribute to CI/CD pipeline improvements and support DevOps practices.
• You document technical designs and actively participate in architecture discussions.
• You contribute to building scalable, maintainable, and high-quality software solutions.

Who we are looking for

• You have 5+ years of professional software engineering experience.
• You have strong proficiency in .NET and C#, with hands-on experience building web applications and APIs using ASP.NET Core, including Web API, MVC, and Entity Framework.
• You have solid experience with Java, preferably using Spring Boot or an equivalent enterprise framework.
• You have hands-on experience with JavaScript and TypeScript for front-end or full-stack development.
• You have hands-on experience developing BDD-style automated test suites using Playwright with Cucumber.
• You have a strong commitment to Test-Driven Development (TDD) and experience driving feature development through unit, integration, and acceptance tests.
• You have experience with RESTful API design and microservices architecture.
• You have experience working with relational databases such as SQL Server, PostgreSQL, or MySQL.
• You have demonstrated experience optimizing SQL queries, indexes, and execution plans for high-performance applications.
• You are proficient in version control systems, particularly Git.
• You have a strong understanding of SOLID principles, design patterns, and clean code practices.
• You are fluent in English, both verbally and in writing.

As a person, we believe you are a team player who takes action and demonstrates responsibility to organize your work and solve your tasks. With our agile end-to-end development process, you will continue to both learn from, and coach your colleagues, so communication is important for us. Technology is developing fast, so learning new innovative technologies is something you strive to do.

We also believe you have

• Experience working with cloud platforms, preferably GCP.
• Knowledge of containerization and orchestration technologies such as Docker and Kubernetes.
• Experience with message brokers such as RabbitMQ, Azure Service Bus, or Kafka.
• Familiarity with NoSQL databases such as MongoDB or Redis.
• Experience with CI/CD tools such as Jenkins, GitHub Actions, or Azure DevOps.
• Experience working in Agile/Scrum environments.
• Familiarity with AI-assisted SDLC practices and experience using AI tools such as GitHub Copilot or BMAD to support development, code review, test generation, and documentation.
• A proactive mindset and an interest in continuously improving software engineering practices and technical solutions.

We offer

We offer you professional growth, meaningful projects, open culture, and an outstanding work-life balance! We offer you an opportunity to create the future of a growing, fast-developing, and important sector. We believe that our organizational culture is an important part of enabling you to be successful. We provide a flexible hybrid work model as part of our culture and way of working. Finally, we also believe in curiosity and learning as a lifestyle where you need to unlearn and relearn every day as new possibilities emerge.

Did we get you inspired?

We look forward to your application!

Please attach your CV or LinkedIn profile and we will reach out to you. Interviews will be held on a continuous basis, so we encourage you to apply today.

At Tieto, we believe in the power of diversity, equity, and inclusion. We encourage applicants of all backgrounds, genders (m/f/d), and walks of life to join our team, as we believe that this fosters an inspiring workplace and fuels innovation. Our commitment to openness, trust, and diversity is at the heart of our mission to create digital futures that benefit businesses, societies, and humanity.
Diversity, equity and inclusion | Sustainability | Tieto

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• Tieto communicates via

@tieto.com

email addresses.

• We never ask candidates to pay fees or share financial details during recruitment.
• If you receive a suspicious message claiming to be from Tieto, don't respond — verify it via our official careers site.
• For more information visit Important Advisory Regarding Recruitment Fraud | Tieto Blog

• 5+ years of professional software engineering experience
• Strong proficiency in .NET and C# with ASP.NET Core (Web API, MVC, Entity Framework)
• Solid experience with Java, preferably Spring Boot
• Hands-on experience with JavaScript and TypeScript
• BDD-style automated test suites using Playwright with Cucumber
• Strong commitment to Test-Driven Development (TDD)
• Experience with RESTful API design and microservices architecture
• Experience with relational databases (SQL Server, PostgreSQL, or MySQL)
• Experience optimizing SQL queries, indexes, and execution plans
• Proficient in Git
• Strong understanding of SOLID principles, design patterns, and clean code
• Fluent in English (verbal and written)
• Experience with cloud platforms, preferably GCP
• Containerization and orchestration with Docker and Kubernetes
• Message brokers such as RabbitMQ, Azure Service Bus, or Kafka
• NoSQL databases such as MongoDB or Redis
• CI/CD tools such as Jenkins, GitHub Actions, or Azure DevOps
• Experience working in Agile/Scrum environments
• Familiarity with AI-assisted SDLC practices (GitHub Copilot, BMAD)