Senior Software Engineer - C Programmer

Fivetran; Oakland (CA); Hybrid; USD 140,000 - 180,000; Full time

Benefits offered by this job

100% employer-paid medical insurance

RSU stock grants

Generous PTO and holidays

Professional development and training

Team-building activities

Job summary

Fivetran in Novi Sad, Serbia, is building data pipelines for the modern data stack. We seek a Senior Software Engineer to design and implement a high-performance extract-load-transform system with a focus on C and scalable architecture.

You will join a small, talented team, collaborate across stakeholders, review PRs, and contribute to roadmap while balancing production reliability and innovation. Hybrid work combines remote and in-person collaboration.

Qualifications

• Proven experience designing and implementing high-performance data systems.
• Strong understanding of C programming and system-level thinking.
• Experience with relational databases and data-intensive apps.
• Familiarity with memory management and performance tuning.

Responsibilities

• Learn deeply about Fivetran to drive practical system improvements.
• Contribute to development and planning of our roadmap.
• Collaborate with core team and stakeholders across disciplines.
• Work across lifecycle: requirements, design, prototype, implementation, review, release, monitoring.
• Review and approve pull requests.
• Own and improve the product.

Skills

C programming

Python

Relational databases

Make

Systems design

Memory management

Performance optimization

Tools

GitHub Copilot

Claude Code

Jenkins

GCP

Azure

AWS

Job description

Novi Sad, South Baka, Serbia, EMEA
Position Title: Senior Software Engineer - C Programmer

From Fivetrans founding until now, our mission has remained the same: to make access to data as simple and reliable as electricity. With Fivetran, customer data arrives in their warehouses, canonical and ready to query, with no engineering or maintenance required. Were proud that more organizations continue to leverage our technology every day to become truly data-driven.

Fivetran and dbt Labs are bringing together two industry-leading companies with a shared mission: helping organizations unlock the full value of their data.

Together, were delivering the data infrastructure layer that helps organizations move, transform, and trust their data from the moment data moves, through every transformation, to the context teams and AI systems rely on.

Fivetran helps organizations automate data movement across the systems, clouds, engines, and tools they rely on. dbt Labs pioneered analytics engineering, helping teams transform data into reliable, governed insights. Together, we support thousands of organizations as they build a trusted foundation for analytics, AI, and better business decisions.

As we bring our teams and technology together, were building on the strengths of both companies while continuing to deliver the products and experiences our customers know and trust. Its an exciting time to join us: were creating a company with the scale, talent, and technology to help more organizations put their data to work with greater speed, confidence, and impact.

During this transition period, you may see references to both Fivetran and dbt Labs throughout our recruiting process as we integrate our teams, systems, and career sites.

About the Role

Fivetran is building data pipelines to power the modern data stack for thousands of companies.

Were 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-transform 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 dont 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 its needed, and will be practical enough to build and iterate on the system while its in production. We are also looking for expertise and productivity with both modern and legacy software development environments.

This is a full-time position based out of our Novi Sad office. Our hybrid work model offers a blend of remote flexibility and in-person collaboration.

Technologies You’ll Use

• C (our main language), Python (used in testing), relational databases (Postgres, Oracle, SQL Server), make
• GitHub Copilot, Claude Code, Jenkins, GCP , Azure, AWS
• macOS/Linux/Unix/Windows, git

What You’ll Do

• 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

Skills Were Looking For

• 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.

Bonus Skills

• 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

#LI-IM1
#LI-HYBRID

Perks and Benefits

• 100% employer-paid medical insurance*
• Generous paid time-off policy (PTO), plus paid sick time, inclusive parental leave policy, holidays (including a year end Global Week of Rest), 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.

*May vary by country and worker type - please reach out to your recruiter for more information

Equal Opportunity Employer, including disability/protected veterans

Equal employment opportunity, including veterans and individuals with disabilities.

We are committed to ensuring that all candidates have an equal opportunity to participate in our interview process. If you require accommodations at any stage of the process due to a disability, medical condition, or any other circumstance, please don't hesitate to submit your request by filling out this form. We will work with you to provide reasonable accommodations to facilitate your participation and ensure a fair and accessible interview experience. Your request and any information provided will be kept confidential and will not impact your candidacy. We look forward to hearing from you and accommodating your needs to the best of our ability.