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Senior Software Engineer - C Programmer

Serbia, Novi Sad · Job Posted May 03, 2026
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Job Description

Fivetran is building data pipelines to power the modern data stack for thousands of companies.We’re looking for a Senior Software Engineer to join our core team and perform a healthy mix of design and implementation tasks to advance the technical foundation behind the Fivetran product offering.This team is tasked with evolving a high performance extract-load-trans form data integration system that enables our engineering teams to correctly implement hundreds of data connectors with minimal maintenance effort. The role will challenge you to reason about relational semantics, powerful abstractions, data representation, and software performance. You don’t need to be a subject matter expert before you join us (you will be one before you leave!), but you will need to have experience working carefully with a high impact software team — especially in environments where the best option may not be obvious, your decisions have cascading implications, and where you sometimes need to measure twice before you cut once. A successful candidate will be humble enough to collect diverse input and build consensus, will be experienced and confident enough to be decisive when it’s needed, and will be practical enough to build and iterate on the system while it’s in production. We are also looking for expertise and productivity with both modern and legacy software development environments.

Job Responsibility

  • Learn deeply about Fivetran in order to focus development on practical and relevant system improvements
  • Contribute to the development and planning of our roadmap
  • Collaborate with a small but mighty core team, and with a broader set of stakeholders
  • Work across the project lifecycle: requirements, design, prototype, implementation, review, release, monitoring
  • Review and approve pull requests
  • Care and feel ownership of our product, and leverage your skills towards improving it

Requirements

  • You are execution-oriented, and understand the need to target your innovation budget for the greatest impact: you find the middle ground between perfect, but takes forever to code and fixes it now, but nobody will ever be able to understand what I did
  • You know how to design and code systems and software that is effective, intuitive, easy-to-operate, and elegantly simple
  • You have worked with the relevant tooling and techniques: cloud services, network protocols, serialization, relational databases, etc.
  • You have knowledge of complex structures, object orientation, exceptions, memory management techniques.

Nice to have

  • Experience with data replication, ETL/ELT tools, cloud and software defined infrastructure tools (for instance AWS Cloud Formation, Kubernetes, Docker), API technologies and analytics is definitely a plus
  • Knowledge of DBMS internals is a strong plus
  • Familiarity with low level concepts, such as encoding and the internals of network communication, is a strong plus
  • Familiarity with system level programming (such as process and memory management and inter-process communication) is a plus

What we offer

  • 100% employer-paid medical insurance
  • Generous paid time-off policy (PTO), plus paid sick time, inclusive parental leave policy, holidays, and volunteer days off
  • RSU stock grants
  • Professional development and training opportunities
  • Company virtual happy hours, free food, and fun team-building activities
  • Monthly cell phone stipend
  • Access to an innovative mental health support platform that offers personalized care and resources in areas such as: therapy, coaching, and self-guided mindfulness exercises for all covered employees and their covered dependents

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