# Senior Full Stack Engineer (Reach) at Smartly

- Company: Smartly
- Status: Open
- Workplace: Hybrid
- Location: Helsinki, Uusimaa, Finland
- Level: Senior
- Discipline: Full-stack
- Employment: Full-time
- Posted: 2026-11-11
- Skills: Research & Development
- Apply: https://job-boards.greenhouse.io/smartlyio/jobs/6253960004

## Description

Team Reach · Helsinki · Hybrid, three office days per week 
 Join Reach at Smartly to build an analytical product that helps customers understand brand marketing performance and make better investment decisions.
 The work spans interactive interfaces, backend services, data processing, and statistical models. Challenges include deterministic deduplication and frequency distribution estimation: problems where assumptions, edge cases, and validation matter.
 As a hands-on senior individual contributor, you’ll shape technical decisions, bring people together, and drive initiatives from an initial question to a reliable production solution.
 What you’ll do 
• Own outcomes. Work with Product and Design to clarify customer needs, choose an approach, and carry initiatives through delivery and follow-up.
• Build across the stack. Develop data exploration interfaces, backend services and APIs, and the data models and computations connecting them.
• Make complex logic reliable. Investigate assumptions, reason through edge cases, and establish how to test and validate algorithms and statistical business logic.
• Drive coordinated delivery. Turn ambiguous goals into manageable steps, agree priorities, coordinate dependencies, surface risks early, and keep colleagues informed.
• Build shared understanding. Listen to different perspectives, explain trade-offs clearly, and help engineering and business stakeholders reach decisions.
• Strengthen engineering practice. Contribute through architecture discussions, thoughtful reviews, documentation, mentoring, and improvements to how we work.


More Smartly roles: https://deviantjobs.com/companies/smartly