Software Engineer

Osttra; Stockholms kommun; Hybrid; SEK 900,000 - 1,200,000; Full time

Job summary

Osttra's Stockholm-based development team is seeking a senior software engineer to help shape a complex post-trade system. You will contribute to development and architecture, collaborating across disciplines to meet evolving business needs.

You will ensure non-functional requirements, monitor system health, and continuously learn to apply industry best practices while expanding your tech stack with Python, TypeScript, React, NoSQL/SQL databases, Docker and Kubernetes.

Qualifications

• A master's degree in computer science or a similar field.
• Around 5 years of relevant experience.
• Excellent communication skills (fluency in English is a must).
• A bold and humble team player.
• A desire to work in a modern tech stack including, but not limited to Python, TypeScript, React, NoSQL/SQL databases, Docker and Kubernetes.
• Business mindedness and a solution-oriented mindset.
• An aptitude and willingness to improve yourself, others around you and our ways of working.

Responsibilities

• Actively contribute to the development and architecture of the system to meet new and changing business needs.
• Ensure that non-functional requirements are established and met.
• Be part of the team taking care of the overall system health.
• Engage in continuous learning to keep up with industry best practices.

Skills

Python

TypeScript

React

NoSQL/SQL databases

Docker

Kubernetes

Education

Master's degree in computer science or a similar field

Tools

Docker

Kubernetes

SQL/NoSQL databases

Job description

About the Role:

The team:

The development team is based in Stockholm and consists of 22 highly skilled individuals with diverse backgrounds, each engineer playing their unique part in serving our global customer base. Everyone on the team shares the responsibility of meeting all functional and non-functional requirements, and you’ll find that the team decisions cover not only business-related improvements but also a wide variety of technical topics such as architectural styles, Kubernetes operators, deployment pipelines, data locality strategies, observability solutions, frontend frameworks and much much more. The team is responsible for a complex system requiring a lot of collaboration within the team and with other parts of the technology organisation and we value learning from each other in order to continuously improve ourselves and the user experience.

Responsibilities and impact:

OSTTRA is a FinTech company at the heart of the global financial system, dedicated to building the future of post-trade. OSTTRA Resolve is our post-trade service that offers an automated trade portfolio reconciliation workflow. Improvement of OSTTRA Resolve has far-reaching effects in this important segment of the financial industry, not only through expanded capabilities of other integrated OSTTRA services, but also directly through operational efficiency improvements and cost reductions for many of the largest banks in the world.

• Actively contribute to the development and architecture of the system to meet new and changing business needs
• Ensure that non-functional requirements are established and met
• Be part of the team taking care of the overall system health
• Engage in continuous learning to keep up with industry best practices

What’s in it for you:

• Influence the future of a market-leading solution together with highly skilled people across the globe
• Work in an empowered engineering team with people that want you to succeed
• Learn about the financial industry and contribute to the stability of the global financial system
• Expand your technical skill set by working in a modern tech stack

What we’re looking for:

Fundamental requirement:

• A master's degree in computer science or a similar field
• Around 5 years of relevant experience
• Excellent communication skills (fluency in English is a must)
• A bold and humble team player
• A desire to work in a modern tech stack including, but not limited to Python, TypeScript, React, NoSQL/SQL databases, Docker and Kubernetes
• Business mindedness and a solution-oriented mindset
• An aptitude and willingness to improve yourself, others around you and our ways of working.

Additional preferred requirements:

• An interest in financial markets
• A passion for technology

The location: Stockholm, Sweden

Right to work requirements:

This role is limited to persons with right to work in the Sweden.

Compensation/benefits information:

This section is only applicable to US candidates

The anticipated base salary range for this position is $A to $Z. Final base salary for this role will be based on the individual’s geographic location, experience level, skill set, training, licenses and certifications.

Our Benefits: Global vision, local impact

At OSTTRA, our benefits philosophy offers a market-competitive package that reflects our position as an industry leader. We want to ensure you feel valued, secure, and empowered wherever you are in the world.

Our approach is built on three core pillars:

• Global foundations: We provide a baseline of excellence across all our offices, focusing on comprehensive Health & Wellness, Financial Security, and Work-Life Balance. No matter your location, you are part of a culture that prioritizes your holistic well-being.
• Locally tailored: We benchmark in each market to ensure our packages are genuinely competitive where you live and work.
• Flexibility and growth: We empower you to work in a way that suits your life. This includes a hybrid working model, generous leave policies, and a commitment to your continuous professional development.

The Trust employee ownership plan

Every employee at OSTTRA is an owner, and a member of The Trust, our employee ownership programme. Our distinct culture encourages colleagues to think and act like owners and raise the bar constantly.

This plan reflects our belief that when we work together to build a stronger, more valuable organisation, then all colleagues should benefit from the value we create.

About OSTTRA

We build and operate the infrastructure that the world's post-trade financial system runs on. Launched in 2021, we have unified more than 20 years of heritage and expertise from four industry leaders into a single, integrated business.

Today,we operate a trusted network that connects thousands of market participants to streamline end-to-end workflows, from trade capture through portfolio optimisation.We translate industry change into workable process, engineering an open, intelligent ecosystem that removes friction and reduces risk for the global markets.

Our distinct ownership culture is underpinned by four behaviours: boldness, curiosity, accountability, and collaboration. In 2025 we were acquired by KKR, one of the world’s most successful private equity firms, and are on a journey of growth and impact.

Joining our team now is a unique opportunity - you will help to shape the next generation of post-trade, transform shared infrastructure into shared benefit, and accelerate your own career. Learn more at www.osttra.com.

Equal opportunity employer statement at OSTTRA:

We are committed to fostering a connected and engaged workplace where all colleagues have access to opportunities based on their skills, experience, and contributions. Our hiring practices emphasise fairness, transparency, and merit, ensuring that we attract and retain the best talent. By valuing different perspectives and promoting a culture of respect and collaboration, we drive and operate the infrastructure that the world's post-trade financial system runs on.