Senior Software Engineer | AI SaaS Software

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Engineer | AI SaaS Software based in Canada. Join an innovative, remote-first engineering team transforming how software is designed, developed, and delivered through AI-native workflows. As a Senior Software Engineer, you will play a key role in evolving a SaaS platform that helps organizations automate recurring workflows, strengthen compliance, and improve operational efficiency. You will work across backend architecture, frontend development, APIs, and AI-assisted engineering systems, using tools such as Claude Code and Codex to accelerate implementation and problem-solving. Beyond delivering features, you will help redefine how engineers collaborate with AI, build reusable development tools, and improve code quality across the organization. With significant autonomy, minimal meetings, and a focus on outcomes rather than rigid processes, this role offers the opportunity to influence both product direction and engineering culture. You will also have the opportunity to lead a small team and help shape the future of AI-driven software development. Accountabilities: - Architect, build, and evolve scalable backend systems using Scala, Play Framework, PostgreSQL, Redis, AWS, and related technologies. - Design, develop, and deploy reliable APIs and AI-assisted services that support product functionality and business needs. - Own end-to-end feature development, from understanding user problems and exploring solutions to implementation, testing, deployment, and production support. - Build and maintain frontend experiences using React, Chakra UI, Storybook, Redux, React Query, XState, and other modern development tools. - Develop, refine, and maintain agent-driven engineering workflows that support multi-session coding, parallel execution, debugging, and refactoring.

- Leverage AI coding tools such as Claude Code, Codex, and Cursor to accelerate development while critically evaluating generated code and ensuring maintainability, reliability, and quality. - Create internal developer tools, reusable prompts, AI skills, and automation systems that improve engineering productivity and support consistent development practices. - Optimize performance across frontend applications, backend services, APIs, infrastructure, and AI-assisted development pipelines. - Establish and promote best practices for AI-native software development, including codebase organization, agent interaction, context management, and human-AI collaboration. - Take ownership of technical decisions and product outcomes, working with designers, product stakeholders, and engineers to solve problems without relying on detailed specifications or ticket-driven processes. - Use dedicated improvement periods to strengthen code maintainability, enhance tooling, explore new technologies, and identify opportunities to improve team effectiveness. - Contribute to the evolution of engineering processes through a six-week development cycle followed by a two-week cooldown focused on improvements and experimentation. - Progress toward leading a small team of approximately two to three engineers, helping define technical direction, development practices, and effective AI-assisted collaboration. Requirements: - At least 7 years of professional software engineering experience, with a strong background in designing, building, and maintaining production systems. - Strong backend engineering expertise in Scala or comparable languages such as Java, Ruby, or C#. - Solid JavaScript and React experience, with the ability to develop and maintain modern frontend applications. - Demonstrated experience building, scaling, and evolving SaaS products in production environments. - Deep familiarity with AI-powered coding tools such as Claude Code, Codex, Cursor, or comparable agentic development solutions.