Software Engineer

Rockstar; Toronto; On-site; CAD 90,000 - 130,000; Full time

Job summary

Rockstar, a Toronto-based early-stage startup transforming how enterprise accounting teams manage the month-end close, seeks a founding engineer to shape the product from the ground up. You will drive both frontend and backend work and collaborate closely with the founders and early customers to solve complex financial problems.

This role offers the chance to influence architecture, tech strategy, and customer-driven development while helping build the engineering team as the company grows.

Qualifications

• Bachelor's or master's degree in computer science or related field.
• 1-3 years of full-stack development experience, preferably with early-stage startups.
• Experience with React/Next.js on frontend and Go on backend is preferred.

Responsibilities

• Lead full-stack development of key product features such as reconciliations, flux analysis, and accruals automation.
• Build and maintain robust integrations with financial systems including ERPs, HRIS, procurement software, and CRMs.
• Design and implement core components of the backend platform, including the jobs framework, flexible data ingestion, and complex financial modeling.
• Ensure best practices in software development, including code quality, automated testing, and CI/CD.
• Collaborate with the founding team on product strategy, feature prioritization, and customer feedback loops.
• Build and maintain planning and agentic workflows using state-of-the-art large language models.
• Collaborate on technical decisions regarding scalability and security.
• Help build the engineering team and culture.

Skills

Full-stack dev

React

Next.js

Go

SQL/Relational DBs

AWS/GCP

ML basics

Startup mindset

Fintech experiencia

Education

CS degree

Tools

PostgreSQL

CI/CD

AWS

Job description

Rockstar is recruiting for an early-stage, well-funded startup that is transforming how enterprise accounting teams manage the month-end close process. The founding team brings deep experience from both finance and engineering, having overseen finance organizations at leading tech companies and built month-end close systems at major enterprises. The company is backed by top-tier investors and finance leaders from some of the most innovative organizations in the industry.

About the Company

This early-stage startup is dedicated to helping enterprise accounting teams streamline the tedious process of month-end closing. The founders have experience from both sides of the problem: overseeing finance organizations at leading technology companies and building month-end close systems at major tech firms. The company has raised a record-setting seed round in the accounting space from top venture capital firms and is supported by finance leaders at prominent technology companies.

Role Overview

They are setting up a new Toronto engineering office and need a founding team. As a founding engineer, the selected candidate will be at the core of building the product from the ground up. This role offers the opportunity to shape both the front-end and back-end architecture, working closely with the founders and early customers to solve complex financial problems.

Key Responsibilities

• Lead full-stack development of key product features such as reconciliations, flux analysis, and accruals automation
• Build and maintain robust integrations with financial systems including ERPs, HRIS, procurement software, and CRMs
• Design and implement core components of the backend platform, including the jobs framework, flexible data ingestion, and complex financial modeling
• Ensure best practices in software development, including code quality, automated testing, and CI/CD
• Collaborate with the founding team on product strategy, feature prioritization, and customer feedback loops
• Build and maintain planning and agentic workflows using state-of-the-art large language models
• Collaborate on technical decisions regarding scalability and security
• Help build the engineering team and culture

Required Skills

• Bachelor's or master's degree in computer science or a related field
• 1-3 years of experience in full-stack development, preferably with early-stage startups
• Strong experience building financial systems is preferred
• Proficiency in front-end technologies such as React and NextJS
• Strong back-end development experience with Go or similar technologies
• Strong experience with relational databases and modeling
• Familiarity with cloud infrastructure (AWS, GCP)
• Ability to understand basic machine learning concepts and quickly ramp up
• Startup mentality with a passion for rapid prototyping, testing, and iterating on feedback
• Fintech or accounting software experience is a plus

Why Join

• Be a core part of a mission‑driven startup looking to transform accounting processes
• Work in a fast‑paced environment where decisions directly impact product direction and company growth
• Opportunity to grow with the company and build a technical team from the ground up
• Competitive salary, equity, and benefits (401k, unlimited PTO)

Join in revolutionizing the accounting month-end close and making accounting operations more efficient for businesses everywhere!