Smartly

Senior Fullstack Engineer (TikTok)

Smartly
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2 months 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

Smartly builds an AI-driven advertising platform used by brands and agencies to create, manage, and optimize ads across Facebook, Instagram, TikTok, Google, Pinterest, and other major media platforms. It sells subscription software and managed services for creative automation, campaign optimization, and reporting. Founded in 2013 and headquartered in Helsinki, the company is owned by Providence Equity Partners and reports managing $5B in annual ad spend for 700+ brands and over 800 billion impressions.

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