Smartly

Senior Fullstack Engineer, Channel Expansion

Smartly
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5 days ago
Helsinki, FinlandSenior

Responsibilities

  • Own the design and implementation of new platform integrations end-to-end.
  • Design and operate distributed, data-intensive systems and microservices at scale.
  • Build automation systems that process large volumes of campaign and performance data.
  • Develop and evolve client-facing APIs and backend services.
  • Drive architectural decisions and contribute to long-term technical direction.
  • Collaborate across teams to establish shared patterns and unify channel behavior.
  • Partner with product and design to shape solutions and platform capabilities.
  • Mentor engineers and improve engineering quality and practices.

Requirements

  • Strong experience building and operating production-grade systems with Node.js and TypeScript.
  • Solid frontend experience with React and modern web development practices.
  • Experience designing distributed systems and asynchronous, event-driven architectures.
  • Proven ability to build scalable systems handling high data volumes.
  • Ability to own complex problems from concept through production.
  • Strong collaboration skills across teams and disciplines.
  • Interest in mentoring and contributing to team-level engineering practices.
  • Ability and willingness to work hybrid from the Helsinki office three days per week.

Benefits

  • Inclusive global culture with colleagues across more than 60 nationalities and 24 locations.
  • Opportunity to contribute to global advertising technology and customer outcomes.
  • Healthcare packages, mental health services, paid holidays, and family leave.
  • Equity options, performance-based rewards, competitive compensation, and career development opportunities.
  • Hybrid workplace with remote-work flexibility and the option to work abroad for up to 30 days annually.
Smartly

About Smartly

1,001-5,000 employees
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