Senior Software Engineer

Rollbar, Inc.; Toronto; On-site; CAD 100,000 - 130,000; Full time

Job summary

A technology firm in Toronto is looking for a Senior Software Engineer to design robust backend services and contribute to a React-based UI. The ideal candidate has over 7 years of backend experience, proficiency in Go, and knowledge of cloud-native systems. Join us in building tools for data engineers to ship faster and safer.

Qualifications

• 7+ years of experience in backend development.
• Experience building distributed or cloud-native systems.
• Strong grasp of data structures and software architecture principles.

Responsibilities

• Design and develop robust backend services in Go.
• Contribute to the React-based UI for user experience.
• Ensure product reliability, scalability, and security.

Skills

Backend development

Proficiency in Go

Frontend development (React)

Distributed systems

Cloud-native systems

Communication skills

Education

BSc/MSc in Computer Science

Job description

lakeFS is an open source project that provides the object storage a manageability layer with version control capabilities such as branching, committing, merging and using pre-commit and pre-merge hooks. This allows data engineers to manage the data lake securely, just like the code repository they manage. We are on a mission to simplify the lives of engineers building data‑intensive applications.

We’re looking for a Senior Software Engineer with a strong backend foundation and frontend experience to help us build powerful, reliable tools used by engineering teams worldwide.

What you'll do

BUILD OUR PRODUCT

• Design and develop robust backend services that power lakeFS, written primarily in Go.
• Contribute to our React‑based UI to deliver intuitive and reliable user experiences.
• Work across our stack: cloud‑native infrastructure (Kubernetes, Terraform, ArgoCD), data engineering plugins and SDKs (Scala, Python, Java), and performance‑critical components such as Graveler.
• Ensure our product remains reliable, scalable, and secure in production — handling billions of daily API calls across multiple clouds.

BUILD OUR TEAM

• Collaborate closely with teammates in a distributed, remote environment.
• Contribute ideas and feedback to shape product direction based on customer and community input.Help foster a culture of trust, ownership, and continuous learning.

Requirements

What we’re looking for

• 7+ years of experience in backend development, preferably building distributed or cloud‑native systems.
• Proficiency in Go (preferred) or similar backend languages (Java, Python, etc.).
• Familiarity with modern frontend development, specifically React.
• Strong grasp of data structures, system design, and software architecture principles.
• Experience working in remote teams and excellent written and verbal communication skills.
• Passion for open source, data infrastructure, and empowering engineers.
• A BSc/MSc in Computer Science (or similar) – A plus.

About the company

Treeverse is the company behind the open source project lakeFS. It was founded by data engineering professionals (Dr. Einat Orr and Oz Katz) with a long track record of innovating and delivering bleeding edge technology, and is backed by top tier investors (NVP, Zeev Ventures, Dell Technologies Capital).

If you’re curious about what we’re building, check out our open source project on GitHub: https://github.com/treeverse/lakeFS.

If you’re excited to build tools that help data teams ship faster and safer — join us.