Software Developer IV, Viper Engineering Posted Tuesday, August 11, 2026 at 4:00 AM Competitive compensation packages and learning and development opportunities, ACV has what you need to advance to the next level in your career. We will continue to raise the bar every day by investing in our people and technology to help our customers succeed.

Who we are: ACV is a technology company that has revolutionized how dealers buy and sell cars online. We are transforming the automotive industry. ACV), has applied innovation and user-designed, data driven applications and solutions.

We are building the most trusted and efficient digital marketplace with data solutions for sourcing, selling and managing used vehicles with transparency and comprehensive insights that were once unimaginable. Our network of brands include ACV Auctions, ACV Transportation, ClearCar, MAX Digital and ACV Capital within its Marketplace Products, as well as, True360 and Data Services. At ACV we focus on the Health, Physical, Financial, Social and Emotional Wellness of our Teammates and to support this we offer: Company Sponsored (paid) Healthcare, Dental, Vision, Life/ADⅅ, Short-Term and Long-Term Disability.

Generous Parental Leave

Top-Up Pay and Vacation Programs. Retirement planning through the Company’s RRSP. ACV Auctions is looking for a Software Developer to join our MAX Engineering team and work on our SaaS Product, MAX Digital.

The position will focus on backend development & maintenance of C#, ASP.NET features & services hosted in AWS and utilizing SQL Server. The ideal candidate has a strong background and proven track record of architecting and designing enterprise applications in C#, ASP.NET and SQL Server, a penchant for high quality code, and a team minded approach to development. Develop APIs, services, background workers, and MVC web applications using C#, ASP.NET (including modern .NET), and an SQL database (SQL Server preferred; other relational databases such as PostgreSQL or MySQL are also acceptable).

Design and build complex systems that can scale rapidly with little maintenance, with a strong focus on reliability, performance, and operational excellence. Design, build,



and maintain Kafka-based event processing services, including consuming, deserializing, validating, persisting, and reacting to events to drive downstream workflows. Develop and maintain application data models, including writing and tuning complex SQL queries, optimizing indexes and performance, and designing schemas that reliably support application workflows Collaborate with software and production engineers to design scalable services, plan feature roll-out, and ensure high reliability and performance of our products. data, enterprise applications, and IT.

Lead technical design and architecture decisions across multiple systems/services, and help establish standards, patterns, and best practices. Modify and develop custom software patterns as needed to solve highly complex software problems, and clearly document tradeoffs and long-term maintenance implications. Be accountable for the overall performance of products and/or services within a defined area of focus, including diagnosing production issues and driving improvements.

Conduct code reviews, develop high-quality documentation, and build robust test suites for your products (unit/integration testing), ensuring maintainable and well-covered code. Provide technical leadership through mentoring, coaching, and strong design/code review feedback, helping raise overall engineering quality. Develop roadmaps and prioritize technical debt to effectively plan features and work, balancing delivery with long-term platform health.

Drive operational maturity (observability, incident response, on-call practices, reliability goals) and lead post-incident analysis with preventative action plans. Handle multiple competing priorities in an agile, fast-paced environment while maintaining strong engineering discipline and delivery quality. Ability to read, write, speak and understand English.





BS degree in Computer Science or a related technical discipline or equivalent practical experience preferred Strong experience integrating 3rd-party APIs, implementing authentication & authorization and developing asynchronous data flows. Strong experience publishing and consuming Kafka events, including designing event contracts, building reliable event-driven workflows, and handling ordering, retries, idempotency, and failure recovery. Strong experience developing unit and integration-tests, and setting expectations for test strategy and coverage.

Solid experience integrating with cloud service (AWS), specifically: Strong experience working with Docker and Kubernetes, including containerization, orchestration (k8s) and serverless deployment scenarios. Strong experience with build & deployment automation (CI/CD) and release workflows. Strong SQL programming and data-layer development experience (schema design, query performance, indexing, and data reliability patterns).

Expert in version control systems and branching/release strategies. Expert in software engineering tooling and mentors and drives adoption for new tools and tooling standards. Expert in release, builds, testing and the entirety of the SDLC. able to lead root-cause analysis and preventative improvements.

Experience working with a geographically dispersed team across multiple timezones, including leading technical alignment and delivery across teams. #ACV is committed to being an equal opportunity employer regardless of sex, race, creed, color, religion, marital status, national origin, age, pregnancy, sexual orientation, gender, gender identity, gender expression, genetic information, disability, military status, status as a veteran, or any other protected characteristic. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. If you have a disability or special need that requires reasonable accommodation, please let us know.

For information on our collection and use of your personal information, please see our Privacy Notice. No immigration or work visa sponsorship provided for this position.

📌 Software Engineer, Development & Deployment (Toronto)
🏢 ACV Auctions
📍 Toronto