Senior Software Engineer

Relay; Kitchener; On-site; CAD 90,000 - 120,000; Full time

Job summary

Relay is seeking a Senior Software Engineer to join our Engineering team in Kitchener. This role involves full-cycle development, managing production systems, and collaborating cross-functionally to deliver fintech solutions. The ideal candidate has 3+ years of experience in software engineering, strong mentorship skills, and a proactive approach to problem-solving.

You will work with a tech stack including React, TypeScript, Node.js, and AWS services. We encourage curiosity about new frameworks and a passion for coding excellence.

Qualifications

• 3+ years of full-stack software engineering experience.
• Led development of significant features with minimal oversight.
• Mentor junior engineers and foster team growth.

Responsibilities

• Own features across the full development lifecycle.
• Manage production systems and optimize infrastructure.
• Partner with product and cross-functional teams.

Skills

Full-stack software engineering

JavaScript (TypeScript, React, Node.js)

Mentoring junior engineers

Problem-solving

Proactive enhancements

Tools

AWS services (ECS, S3, RDS, Dynamo, Lambda)

GitHub

Jira

Job description

Relay is a digital banking platform that gives self‑made business owners the tools and know‑how to be great with money—bringing clarity, confidence, and control to every dollar earned, so they can turn hard work into lasting success. We do this by replacing financial guesswork with real visibility, transforming cash flow from a constant source of stress into a clear signal owners can use to run stronger, more resilient businesses.

Our Engineering team is at the heart of building banking products that help millions of small businesses succeed. We’re on a journey to reinvent banking, and we’re looking for a curious, impact‑driven Senior Software Engineer to join our growing team – someone who thrives on taking smart risks, experimenting boldly, and learning from every challenge.

You’ll tackle complex problems head‑on, ship high‑quality, robust code, and shape systems that power our products. This is a unique opportunity to work across our full product suite, influence technical decisions, and deliver end‑to‑end features that customers love. If you’re excited about building best‑in‑class fintech products in a fast‑growing, collaborative environment, this is the role for you.

What You’ll Be Doing

• End‑to‑End Development: Own features across the full development lifecycle – from design and development to testing, deployment, and monitoring – ensuring reliability and performance at scale
• System & Infrastructure Ownership: Manage production systems, optimize infrastructure, and contribute to the availability, scalability, and resilience of our platform
• Cross‑Functional Collaboration: Partner with Product, Design, and cross‑functional teams to build solutions that meet customer and business needs
• Innovation and Continuous Improvement: Proactively identify areas for technical, process, and product improvement, helping the team raise the bar and influencing technical direction and long‑term strategy

Who You Are

• You have 3+ years of full‑stack software engineering experience
• You have led the development of significant components or features, delivering them successfully with minimal oversight
• You mentor junior engineers, sharing expertise and fostering the growth and skill development of the entire team
• You proactively drive enhancements and lead initiatives to enhance code quality, optimize performance, and streamline development processes
• You’re a lifelong learner, curious about new frameworks, best practices, and emerging technologies
• You thrive in fast‑paced, dynamic environments and are comfortable navigating ambiguity and change
• You’re a collaborative team player, eager to pitch in, ask questions, and provide and receive feedback
• You take ownership end‑to‑end, solving problems creatively and proactively, while keeping the customer and business impact front‑of‑mind

It’s a bonus (but not required) if you

• Have worked in startups or high‑growth tech companies
• Have experience with JavaScript – we primarily use TypeScript, React, and Node.js
• Have working knowledge of AWS services (ECS, S3, RDS, Dynamo, Lambda) and continuous deployment pipelines

Our Tech Stack

• Front‑end: React, Typescript, React Native
• Back‑end: Node.js, Typescript, Terraform, AWS (DynamoDB, RDS Postgres, Lambda, S3, SQS, SNS, SES, ElasticSearch, ECS)
• Tools: Cursor, Claude, GitHub, GitHub Actions, Datadog, Jira, Metabase

We encourage you to have a conversation with your recruiter and ask questions about compensation throughout the hiring process. For more information on our compensation philosophy and perks and benefits, visit our Candidate Hub.

Disclaimer: For compliance reasons, all offers of employment at Relay are conditional upon a successful background check and employment verification through Certn.