Mid/Senior Full-Stack Engineer

Type: Full-time

Work experience level: Mid to Senior-level (3+ years of relevant experience)

Starting date: Immediate

Location: Finland (remote). For candidates based in Helsinki, a hybrid working model applies.

VaasaETT is a data-driven market analytics and consultancy business, specializing in complex end-user issues in energy markets across six continents and over 90 jurisdictions worldwide. We serve a global client base of energy companies, governments, regulators, innovators, investors, and enterprise consumers. Our insight is based on the most advanced data science, market-leading data sets, outstanding experience, and an unrivalled network of sources developed over more than two decades. VaasaETT assists clients with market assessment and entry, innovative development, and M&A, and carries out public research projects. Our goal is to support our clients in their efforts to transform and develop for the benefit of consumers, society, and sustainability. VaasaETT is headquartered in Helsinki, Finland, with additional offices in Greece and key partners across EMEA, APAC, and the Americas.

See www.vaasaett.com for more information.

We are building a new data platform for our clients and are looking to hire a Full-Stack Engineer, based in Finland.

In this role, you will get to design and develop our new data platform. This is an opportunity to work directly with a focused, high-impact team and shape architecture, product direction, and engineering standards from day one. If this sounds like something you would enjoy, keep reading!

The role will include:

• Design, develop, and maintain scalable, secure web applications end-to-end
• Drive frontend architecture and implementation with a focus on usability and maintainability
• Participate in architectural decisions related to APIs, data models, and integrations
• Develop clean, intuitive frontend interfaces and dashboards
• Work with databases, data pipelines, and integrations
• Collaborate closely with business, analytics, and data teams
• Understanding client needs and identifying opportunities regarding strategic development
• Ensure performance, reliability, and scalability of the system
• Collaborate on product decisions and technical roadmap

We require you to have: 

• 3+ years of experience in full-stack web platform development, ideally within data-driven or SaaS environments
• Strong experience with modern backend frameworks
• Proven experience with frontend frameworks such as React
• Relevant experience with RESTful APIs and service-based systems
• Deep understanding of Docker, Git, and modern development workflows
• Bachelor’s degree in software engineering, Computer Science, Electrical & Computer Engineering, or related fields
• Ability to work independently in a fast-paced environment while collaborating effectively with cross-functional teams
• Ability to develop and maintain a dedicated project from the beginning to the end.

We value:

• Previous experience in building energy data platforms
• Experience in Python
• Project management experience
• Good personality and team player
• Any additional evidence of the above characteristics

We can offer you: 

• Participation in architectural decisions related to APIs, data models, and integrations
• High ownership and direct impact
• Flexible and collaborative working environment
• Work on meaningful data and analytics challenges with real business impact
• A truly international, diverse, and friendly work community (main company language is English)
• Competitive salary
• Work-life balance, flexible working arrangement, fun team activities
• Last but not least: Each employee’s ideas and suggestions are truly appreciated and often picked up immediately, no matter if they concern work, the work environment, or anything else

In this position, you will be employed directly by VaasaETT.

If you believe you are the right candidate for this position, please send us your application letter and CV by 21.06.2026.

We kindly request that you include your project portfolio or any proven work experience building any SaaS platform, your proven expertise (or preference) in back-end and/or front-end tasks, and your salary expectations (gross annual) in the application letter. Providing a salary range is acceptable as well.