Senior Software Engineer - Performance Engineering

From Fivetran’s 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. We’re proud that more organizations continue to leverage our technology every day to become truly data‑driven.

Fivetran is building data pipelines to power the modern data stack for thousands of companies. We are looking for a brilliant and collaborative individual to join our Performance Engineering Team in the Platform Group as a Senior Staff Software Engineer. You will be focusing on developing world‑class enterprise capabilities and features in support of our largest and most sophisticated customers. Your primary responsibility will be to ensure that our product base meets or exceeds performance standards, driving the overall performance of our products.

This entails proposing and designing performance‑enhancing features and improvements, designing and executing performance tests, analysing data to identify performance issues, and resolving them proactively. You will also monitor system performance over time, identify trends, and recommend improvements, collaborating closely with engineers across teams on discussions, debates, and code reviews.

This is a full‑time position based out of our Oakland office. Our hybrid work model offers a blend of remote flexibility and in‑person collaboration, including two days in the office each week to connect and build as a team.

• Java (JVM, JIT, GC tuning, thread management), JUnit
• Docker and Kubernetes
• AWS, GCP
• Terraform, Wire Mock, Rest Assured
• Bazel, Build Kite

• Develop and debug code to identify and fix performance issues
• Analyse production workloads and system performance metrics to identify performance bottlenecks in our system
• Build proof of concepts and translate successful ones into solutions to maximise Fivetran product’s performance and efficiency
• Build and maintain a platform that focuses on improving the performance, resilience and quality of Fivetran products
• Impact Fivetran business across product verticals through the work you do
• Develop deep expertise in Fivetran’s Product, Infrastructure, and Platform
• Communicate, coordinate, and align strategy with the engineering team members; make recommendations to improve reliability, performance, best practices, and processes
• Work with cross‑functional teams (Developers, Product, SRE) across the organization
• Actively engage with fellow engineers in design and code reviews to ensure we deliver performant solutions that improve the product’s efficiency

• 10+ years of hands‑on experience building and scaling high‑throughput, low‑latency distributed backend systems
• Deep expertise in Java performance engineering, including profiling, tuning, and garbage collection optimisation
• Familiarity with performance testing frameworks, load simulation, and continuous benchmarking
• Strong understanding of algorithms, data structures, and systems design
• Hands‑on experience with cloud‑native infrastructure (AWS, GCP, or Azure) and containerisation (Docker, Kubernetes)
• Demonstrated experience influencing technical direction and engineering culture across teams

• Experience in JVM internals, async I/O frameworks (Netty, Vert.x), or reactive systems
• Familiarity with database performance tuning (Postgres, Snowflake, etc.)
• Contributions to open‑source performance tooling or frameworks

The compensation range displayed on this job posting reflects the minimum and maximum target for new hire compensation for the target position and level, and may include sales incentives or target bonuses depending on the role. Our compensation ranges are determined by role, level, and location.

Oakland Pay Range: $ — $ USD

• 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,…