frontend developer English-speaking jobs in Lahti

Software Development Engineer III on the Maps API team balances rapid development with service reliability. Responsibilities include designing systems, mentoring peers, and ensuring operational excellence for high-traffic APIs. Requires 8-10+ years building scalable backend services.

Own and maintain Verda's self-managed GitLab end-to-end, covering configuration, upgrades, and architecture for high availability. Build shared CI runners and ensure operational reliability through monitoring and automation.

Senior Mechanical Engineer role requiring a Bachelor's degree in Mechanical Engineering and five years of relevant experience. Responsibilities include mechanical design, analysis, prototyping, and manufacturing support.

Seeking a detail-oriented Cleanroom Operator for micro-assembly of optical components. This full-time, fixed-term role requires strong fine motor skills, precision under a microscope, and adherence to strict quality and cleanliness standards.

As Vice President, Global Key Accounts, you will lead strategy for key global customer partnerships, driving profitable growth and deeper relationships. You will lead a global team and align customer needs with technology direction.

Doctoral Researcher position focusing on Finite Element Technology for Smooth Problems. Responsibilities include developing, analyzing, and implementing finite element methods for complex problems. Requires a Master's in a relevant field and good English skills.

Senior Procurement Sustainability Specialist optimizes material portfolios by integrating sustainability and value into procurement. This role leads Scope 3 emissions data, develops sustainable material strategies, and manages supplier sustainability development.

Customer Success Manager to help B2B SaaS customers succeed by turning feedback into business decisions. You will manage the customer journey, advise on CX, and help grow long-term partnerships.

Experienced Project Director needed to own end-to-end delivery of hyperscale Data Centre projects in Finland. Lead multidisciplinary teams through design, construction, and handover, managing budgets and risks.

Facilities Manager for a Data Centre client. Lead FM requirements, supervise contractors, manage budgets, and ensure smooth service operations. Requires experience in building maintenance and project management.

Business Controller to support Metsä Board's Consumer Packaging business, ensuring financial transparency and performance management. Focus on sales analysis, pricing, margins, and profitability. Requires a Master's degree and 5+ years in business controlling.

Join a dynamic team to advance adaptive radiotherapy. This Full Stack Software Engineer will design and implement single-page web applications and maintain backend services using C#/.NET. Experience with Angular and distributed systems is required.

Lead operational delivery of Kiilto’s One ERP programme, managing transitions from Design to Build, deployment, and international roll-outs. Requires experience in ERP implementation and roll-out management.

Senior Data Center Operations Engineer to support advanced AI infrastructure. Own reliability of compute, network, power, and cooling systems. Requires 7+ years in data center or critical facilities, strong Linux/networking skills, and bilingual proficiency.

Join the Edge HW team to design, build, and test hardware for unmanned systems. Responsibilities include assembling, testing, and prototyping electronics for field-ready builds. Experience with electronics design and lab testing is required.

Manage Google Ads accounts end-to-end for DTC eCommerce brands, focusing on driving sustainable business growth and profitability. Requires 1-2 years of Google Ads experience and strong analytical skills.

Sales Manager drives adoption of digital Grid Automation solutions in Finland. Responsibilities include portfolio sales, new opportunity development, and supporting tendering activities. Requires a degree in Electrical Engineering and fluency in Finnish and English.

Mechanical Commissioning Engineer needed for complex, mission-critical data center projects. Oversee HVAC commissioning, functional performance testing, and technical validation. Requires 2+ years' experience and a relevant engineering degree.

Senior ML & Biosignal Scientist to bridge human physiology and ML for Oura's next-gen features. Own the algorithm lifecycle, developing state-of-the-art models from noisy, multimodal sensor data. Requires 5-7+ years in ML/biosignal processing.

Own a high-volume portfolio of SMB and mid-market customers, driving adoption of engineering analytics SaaS. Lead onboarding, design scalable touchpoints, and use usage signals to improve customer health.