Tech Lead, Software Development

Wärtsilä is an innovative technology company known for being a forerunner in the Marine and Energy markets. Every day, we – Wärtsilians - put our hearts and minds into turning Wärtsilä's purpose of enabling sustainable societies through innovation in technology and services into reality. Our ultimate aim is to provide increased value to both our customers and society. New, game-changing ideas and continuous improvement have been part of our DNA since 1834. Together, we can create new business opportunities and more sustainable future that we can all be proud of. 

We want to transition the world towards a decarbonised and sustainable future. By pushing the boundaries of engineering and technology, we can make it work. We are always on the lookout for future-oriented talent – want to join the ride?

We are looking for a Tech Lead, whose focus will be Wärtsilä’s new customer facing portal, MyWärtsilä. Our new portal will offer an extensive range of products and services to our customer base, and making the right technology choices is fundamental to its success.  

The preferred location for this position is Helsinki, Finland, however Vaasa and Turku are also possible. Our teams typically work in hybrid mode.

Your role and responsibilities

As a Tech Lead, Software Development, you will guide the technical direction of our B2B customer portal, the principal digital touchpoint for our global customer base. You will work hands-on with a team of experienced developers while serving as the architectural anchor for our modern MACH-based landscape.

This is a hybrid role: part engineering excellence, part architectural thinking, part stakeholder collaboration. You’ll translate commercial and customer requirements into actionable technical designs, ensure alignment towards other product and technology teams within the organisation, and safeguard the long-term maintainability of our digital platform.

To succeed in the position, you are seen by colleagues as an expert in your field, and you show a passionate interest and attitude towards cloud native, API-first development.

You will be working as a part of a skilled Platform Engineering and Developer Services team with a diverse expertise set.

These will be your key responsibilities:

• Acting as the Tech Lead for the MyWärtsilä customer portal.
• Leading and mentoring the development team in building scalable, secure, and modular service powering the portal.
• Defining and upholding architectural standards in line with MACH principles, ensuring services remain composable, API-driven and cloud-ready.
• Working closely with the Product Owner(s) to translate customer and business needs into clear technical specifications, system designs, and implementation plans.
• Collaborating with technical and non-technical stakeholders across the organisation to ensure alignment and capture new opportunities for cross-product collaboration.
• Owning the overall technical quality of the portal, from code reviews and CI/CD practices to reliability, performance, observability and security.
• Driving discovery and feasibility assessments for new features, integrations and platform improvements.
• Ensuring documentation, architecture diagrams and API contracts are consistently maintained and communicated.
• Championing modern engineering practices, including DevOps, testing automation, event-driven design and incremental delivery.
• Fostering a culture of continuous improvement.

To be able to succeed in the position, we expect you to have:

• Proven experience from a similar, stakeholder-facing role
• Several years of experience in both back-end and front-end software development
• Proficient in the use of AI in the area of software development, both best practice and anti-patterns
• Strong skills in technologies such as React, Python, JavaScript-based frameworks, GitHub and AWS
• Strong problem-solving skills with an interest in leadership
• Excellent communication and documentation skills
• Experience in ownership of software architecture and strategic technical decision-making
• Experience in ensuring best practices in software development to support long-term growth
• Experience in Agile ways of working
• Fluency in English

As an ideal candidate, you would have:

• Self-driven, analytical and goal-focused, with a 'can do' attitude
• Knowledge of integration technologies (e.g. DynamoDB, SQL, NoSQL, REST, GraphQL etc)
• Experience in Kubernetes, microservices and serverless technologies
• Experience in AWS and/or Azure platforms
• Good knowledge of Devops practices
• Keen interest in new frameworks and programming languages
• A thorough understanding of how technology choices influence the user experience

The following would also be seen as an advantage:

• Experience in working as SCRUM Master
• Experience in Atlassian toolset

Why you and us?  

We at Wärtsilä believe in empowerment, ownership and taking responsibility of our work. We support each other’s growth, and co-creation is the true basis of our innovation. We have courage to see opportunities and take initiative.

We are authentic and honest, and we strongly believe in that by being your own true self you can accomplish so much more. We don’t always get it right the first time, and if mistakes are made, we make sure to learn and grow from them. We want everyone to voice their opinions freely. That is why we have built an environment that empowers you and everyone around you, and where you can feel safe and cared for. Are you eager to be part of this ambition?

We have an amazing team, and we are excited about our work and the impact it has on building sustainable societies. We are looking to find a colleague with this shared passion for smart technologies and a sustainable future.

Contact & next steps 

We hope to hear from you soon by submitting your application through our careers portal by 06.01.2026. We aim to keep you updated on the process throughout.

For further questions, please reach out to Juha Kalliokoski, GM Platform Engineering and Developer services through juha.kalliokoski@wartsila.com with any questions related to this position (only for questions from direct job applicants, applications through email will not be recorded or responded to).

Welcome to join us in shaping the decarbonisation of marine and energy!

Last application date: 06/01/2026 

At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job-relevant merits and abilities. 

All new Wärtsilä employees in Finland will attend occupational health checks, including drug tests/screenings where applicable. When a person is located outside of Finland, the country legislation is followed.

Please note that according to Wärtsilä policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country.

This is Wärtsilä 

Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 18,300 professionals, in more than 230 locations in 77 countries, shape the decarbonisation transformation of our industries across the globe. Read more on www.wartsila.com. 

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