Smartly

Senior Fullstack Engineer (TikTok)

Smartly
Apply
5 days ago
Helsinki, FinlandSenior

Responsibilities

  • Own TikTok product capabilities end-to-end, from customer-facing experiences through backend services and APIs.
  • Build user experiences for creating, managing, automating, and optimizing advertising campaigns.
  • Design and operate distributed, data-intensive systems and asynchronous event-driven services at scale.
  • Build and evolve APIs and integrations connecting Smartly with TikTok and its broader platform.
  • Drive technical and architectural decisions and contribute to long-term technical direction.
  • Partner with engineering, product, and design teams to shape customer-focused solutions.
  • Mentor engineers and help improve engineering quality and practices.

Requirements

  • Strong experience building and operating production-grade full-stack applications, ideally with TypeScript, Node.js, and React or similar technologies.
  • Experience delivering product capabilities end-to-end across customer-facing experiences, backend services, and APIs.
  • Experience designing distributed systems and asynchronous, event-driven architectures at scale.
  • Ability to build reliable systems and integrations handling high volumes of data.
  • Ability to own complex problems and drive them from concept through production.
  • Strong collaboration skills with engineering, product, and design teams.
  • Pragmatic approach to balancing user experience, technical quality, customer needs, and delivery speed.
  • Interest in mentoring engineers and contributing to strong engineering practices.
  • Ability and willingness to work in a hybrid setup from the Helsinki office three days per week.

Benefits

  • Inclusive global culture with colleagues across more than 60 nationalities, 24 locations, and 13 countries.
  • Healthcare packages, mental health services, paid holidays, and family leave.
  • Equity options, performance-based rewards, competitive compensation, and career development opportunities.
  • Hybrid work model combining office and remote work, with the option to work abroad for up to 30 days annually.
  • The role is based in Helsinki and requires three days per week in the office.
Smartly

About Smartly

1,001-5,000 employees
Contact me