Senior SW Engineer - Tieto Banktech (m/f/d)

tieto; Solna kommun; On-site; SEK 900,000 - 1,200,000; Full time

Job summary

Tieto Banktech seeks a Senior Software Engineer to own the Equity post-trade platform, driving architecture, modernization, and robust delivery in a complex domain.

Join a hybrid team building with C#, .NET, REST APIs, and microservices, shaping scalable, production-grade solutions across locations while collaborating to define technical direction and ensure performance and reliability.

Qualifications

• Strong experience with C#, .NET, SQL, APIs, and microservices architecture.
• Proven track record modernizing legacy, monolithic systems.
• Solid system-design skills for scalable, resilient solutions.

Responsibilities

• Take end-to-end ownership of features from design to production
• Design, build, and implement solutions using C#, .NET, REST APIs, and microservices
• Drive modernization of legacy, database-heavy systems into modular, maintainable architectures
• Contribute directly to architecture and design decisions with a strong engineering mindset
• Define and execute technical solutions aligned with product and business needs
• Write clean, efficient, and production-grade code with focus on performance and scalability
• Take ownership of problem-solving in a complex, high-impact domain
• Work effectively in a distributed setup across locations

Skills

C#

.NET

SQL

APIs

Microservices

Tools

Azure

CI/CD

Git

Docker

Kubernetes

Job description

Senior SW Engineer - Tieto Banktech (m/f/d)

• Full-time
• Remote Type: Hybrid
• Job Area: Application and Product Development

We are looking for a Senior Software Engineer with strong hands-on expertise and a passion for building high-quality systems. In this role, you will take technical ownership of our Equity post-trade platform, driving architecture, modernization, and delivering robust solutions in a complex domain.

What You’ll Do

Take end-to-end ownership of features from design to production

Design, build, and implement solutions using C#, .NET, REST APIs, and microservices

Drive modernization of legacy, database-heavy systems into modular, maintainable architectures

Contribute directly to architecture and design decisions with a strong engineering mindset

Define and execute technical solutions aligned with product and business needs

Write clean, efficient, and production-grade code with focus on performance and scalability

Take ownership of problem-solving in a complex, high-impact domain

Work effectively in a distributed setup across locations

What We’re Looking For

Strong experience with C#, .NET, SQL, APIs, and microservices architecture

Proven track record in modernizing legacy systems and refactoring monolithic applications

Solid understanding of system design and building scalable, resilient solutions

Hands-on engineer with a strong sense of ownership and accountability

Ability to work independently and drive technical solutions forward

Experience with Azure, CI/CD pipelines, Git, and DevOps practices

Nice to Have

Experience in Capital Markets or Equity post-trade systems

Understanding of equity trading workflows

Experience with Docker, Kubernetes, and cloud-native architectures

Background in product-driven engineering environments

We Offer

Real ownership and impact on critical banking systems

Opportunity to shape architecture and technical direction

Focus on engineering excellence and high-quality delivery

Continuous learning and growth opportunities

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