Smartly

Senior Full Stack Engineer (Reach)

Smartly
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8 hours ago
Helsinki, FinlandSenior

Responsibilities

  • Own product engineering outcomes from clarifying customer needs through delivery and follow-up.
  • Build interactive data exploration interfaces, backend services, APIs, data models, and computations across the stack.
  • Analyze assumptions and edge cases and establish testing and validation for algorithms and statistical business logic.
  • Coordinate delivery by breaking ambiguous goals into steps, aligning priorities, managing dependencies, and surfacing risks.
  • Facilitate technical and business decisions by explaining trade-offs and building shared understanding.
  • Contribute to architecture discussions, code reviews, documentation, mentoring, and improvements to engineering practices.

Requirements

  • Senior experience designing, shipping, and operating substantial production software.
  • Full stack capability across frontend, backend, data, and models, with depth in selected areas.
  • Strong understanding of APIs, data modeling, algorithms, application state, testing, correctness, performance, and maintainability.
  • Analytical reasoning skills, including making assumptions explicit, identifying counterexamples, and evaluating solution soundness.
  • Collaborative leadership skills, including building agreement, communicating clearly, and giving and receiving constructive feedback.
  • Practical judgment when using AI-assisted development, including assessing generated output and validating changes through testing and investigation.
  • Experience with analytical products, statistics, or algorithmic systems is valuable but not required.

Benefits

  • Healthcare and mental health support.
  • Paid holidays and family leave.
  • Equity opportunities.
  • Career development opportunities.
  • Hybrid work in Helsinki with three office days per week.
  • Recruitment process includes recruiter, team lead, technical interviews, and final engineering leadership conversations.
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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