Senior Software Engineer – Tieto Banktech (m/f/d)

Tieto; Solna kommun; Hybrid; SEK 900,000 - 1,200,000; Full time

Benefits offered by this job

Hybrid work model

Job summary

Tieto is seeking a Senior Software Engineer to own the equity post‑trade platform, driving architecture, modernization, and delivering robust solutions in a complex domain. You will work on end‑to‑end features, focusing on C#, .NET, REST APIs, and microservices in a distributed setup across locations.

You will modernize legacy, data‑heavy systems, influence architectural decisions, and contribute to high‑quality production code with strong ownership.

Qualifications

• End‑to‑end ownership of features from design to production.
• Design, build, and implement solutions using C#, .NET, REST APIs, and microservices.
• Modernize legacy, database‑heavy systems into modular, maintainable architectures.
• Contribute to architecture and design decisions with an engineering mindset.

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.

Skills

C#

.NET

SQL

APIs

Microservices

Tools

Azure

CI/CD

Git

DevOps

Docker

Kubernetes

Job description

Job Description

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 domainWork 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
• Flexible hybrid work model in Sweden
• Continuous learning and growth opportunities

Interested?

Apply today — interviews are ongoing.

For more information, contact: [e-mail]

Background checks apply.

Tieto declines calls from recruitment agencies.

Additional Information: 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.