Developer-oriented Quantitative Analyst Trainee, OP Markets

The application period for OP Financial Group's 2026 Kiitorata Trainee Program is now open! We are looking for approximately 40 open-minded and courageous talents for diverse, challenging, and skill-enhancing roles in various business areas.

The traditional finance industry is rapidly transforming, and our mission is to be a leading finance powerhouse in this change – or a tech powerhouse possessing a banking license, if you like. Are you looking to work with a stable and responsible employer that has made good use of enterprise agile? With us, you will. Welcome to OP!

We are strengthening OP Markets’ Quantitative Development team with a developer-oriented Quantitative Analyst (Quantitative Developer) to work with us in Helsinki, Vallila.

The purpose of the Quantitative Development team is to support the customer business by streamlining business processes and enabling new business solutions, building pricing intelligence for money market products, modeling of counterparty risk, funding and capital costs. Thus, the Quant team is a key ingredient in helping the traders and sales to succeed and the business to achieve its goals.

What Would You Get To Do?

As a developer-oriented Quantitative Analyst (Quantitative Developer) at OP, you will play a crucial role in building and enhancing our cutting-edge financial services. Your web development expertise will allow you to contribute to creating user interfaces that impress our stakeholders. As a full-stack developer you will also be interacting with our proprietary C++ pricing and risk libraries which serve as the backbone of many of our backend systems. Your understanding of C++ will be invaluable as you collaborate with your colleagues in the team.

As an ambitious agile team, we have end-to-end responsibility for system development and a great deal of both freedom and responsibility in finding the best ways to maximize customer value. In this role, you get a unique chance to be one of the few quantitative analysts in the whole country and produce high quality operations which would even impress our competitors on an international scale!

Your Key Qualifications

• Education with quantitative background
• Strong programming skills in Typescript, Python or C++
• Experience with Cloud platforms such as AWS and its CDK
• Experience with OOP and/or functional programming paradigms
• Focus on details and analytic approach for problem solving
• Team player and capability to work in agile/lean projects
• Fluency in written and spoken English
• Fluency in Finnish is beneficial, particularly in cross-team collaboration

Nice To Haves

• Experience on event-driven real time systems and concurrent or co-operative programming
• Knowledge of databases and SQL
• Exposure to React-applications will be highly beneficial
• Basic knowledge of derivatives pricing models (in any of interest-rate, FX, equity, credit and XVA)
• Basic knowledge of Excel and VBA
• Experience working with Boost and QuantLib-libraries

A Few Words About Us…

At OP Markets, you will have the opportunity to grow in a unique environment where the entire Markets business and development functions comes together under the same roof, tightly integrated across all product areas. As a developer-oriented Quantitative Analyst (Quantitative Developer), you will work across diverse domains with the support of expert colleagues, ensuring continuous learning in an inspiring environment built in by design.

…And Why You Should Work For Us

At OP, we value continuous learning and growth. You'll have access to a wide range of career possibilities within one of the country's largest software companies, and you'll work alongside a community of talented professionals who share your passion for technology and innovation. We offer competitive compensation, a comprehensive benefits package, and a supportive work environment that fosters collaboration and excellence. Additionally, we understand the importance of work-life balance and support a flexible remote work policy, allowing you to work from the comfort of your own environment while still being fully engaged with the team and delivering high-quality results.

At OP, you will work on challenging tasks of daily life, and in addition to gaining a vast amount of life skills and new expertise, you will be a part of Finland's most attractive financial industry player. With your actions and a determined attitude, you can influence your own career path here. We support your personal development and encourage you boldly! You will be employed by OP for a paid six-month contract from March 1 to August 31, 2026, and we offer the same salary to you and all trainee colleagues; €3,150 per month.

You will enjoy a wide range of staff benefits, including a personnel fund and special terms for employee banking, insurance and loan services. We offer comprehensive occupational health care, extensive medical treatment expenses insurance and a full-time group accident insurance policy. We invest in wellbeing at work by encouraging a good work-life balance, providing flexibility in your daily life, and offering lunch, sport and cultural benefits and opportunities for affordable holidays in OP timeshares.

Join Our Team Of Future Stars!

Are you curious to know more? Please do not hesitate to contact your future colleague Lead Quantitative Analyst, Lauri Tamminen (+358 44 536 5400, lauri.tamminen(at)op.fi). He is happy to tell you more about the position and how it is to work at OP. You can also start to get to know us better by listening to the OP Tech Podcast where we cover financial technology matters from OP’s perspective.

Next, we would like to hear more about you, so apply by telling us about your skills and motivation in the form of an application and video responses. Apply for the position by Sunday, October 19, 2025, at the latest by 1) submitting your application documents via the Apply Now button and 2) additionally responding to our video interview questions through this link.

We will start processing applications as soon as the application period opens, so explore our diverse trainee positions and send your application to us today!

Here's how our application process works:

• Apply for the positions by October 19, 2025, through OP's career site where you can find job-specific job postings and additional information about the Kiitorata Trainee Program.
• Please submit your application documents via the Apply Now button and additionally respond to our video interview questions through this link. Please note that progressing to the next stage requires both submitting your application documents through our application portal and providing video responses to our questions.
• We will contact all applicants regarding further steps by Tuesday, November 11, 2025. Those selected for personal interviews will be contacted by phone to arrange an interview date, and those not selected will be informed via email.
• As part of the selection process, candidates who progress may be asked to complete a technical assessment relevant to the role.
• We will interview and announce selection decisions to the finalist candidates by December 19, 2025. As part of the selection process, all finalist candidates will undergo personality assessments.
• The employment contract will be for the period from March 1 to August 31, 2026.

We operate in the financial sector and our business is founded on trust and accountability. For this reason, we will check the successful candidate's credit history, corporate connections, and potential conflicts of interest. In addition, the successful candidate must take a drug test.

Op Financial Group - We Have Something In Common

We at OP Financial Group highly respect diversity and equity. We want everyone to feel welcome and valued as part of our community. We appreciate diverse people, experiences, and viewpoints and we encourage everyone to apply for a job with us because we all have something in common.    

Owned by our customers, we are one of the most appealing employer and the leading financial services group in Finland. OP Financial Group employs over 14,000 professionals and our main task is to promote sustainable financial success, security, and well-being for our owner-customers and our operating region. 

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