Software Developer IV, Viper Engineering

ACV Auctions; Toronto; On-site; CAD 120,000 - 160,000; Full time

Benefits offered by this job

Healthcare and dental coverage

Employee stock purchase program

RRSP retirement plan

Job summary

ACV Auctions is seeking a Software Developer IV to join the MAX Engineering team in Toronto, working on the MAX Digital SaaS product. You will focus on backend development, APIs, and services hosted in AWS with SQL Server, Kafka events, and modern .NET.

The role requires architectural experience and a track record of delivering enterprise applications with reliability and performance. You will mentor teammates and contribute to security, testing, and deployment practices.

Qualifications

• BS degree in Computer Science or a related technical discipline or equivalent practical experience preferred.
• Strong experience maintaining and extending an existing codebase, adapting to pre-existing patterns and tracing the code’s path of execution across services.
• 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.
• Strong experience with AWS services (SQS, SNS, S3, ECS, EKS, Lambda, ElasticSearch) and Docker/Kubernetes.
• Minimum 8 years of experience with CI/build tools and release workflows.
• Expert in version control, branching/release strategies, and software engineering tooling.

Responsibilities

• Develop APIs, services, background workers, and MVC web applications using C#, ASP.NET and SQL Server.
• Design and build scalable systems with focus on reliability, performance and observability.
• Design and implement Kafka-based event processing services for downstream workflows.
• Develop and maintain data models, optimize queries, and design robust schemas.
• Lead end-to-end initiatives, align with stakeholders, and ensure delivery and production support.
• Collaborate to design scalable services and ensure high reliability of products.
• Mentor teammates, drive engineering quality, and establish standards and practices.
• Develop roadmaps, prioritize technical debt, and drive post-incident improvements.

Skills

C#

ASP.NET

SQL Server

Kafka

AWS

Docker

Kubernetes

CI/CD

Unit testing

Distributed systems

Education

BS degree in Computer Science or related field

Tools

AWS

Docker

Kubernetes

SQL Server

Kafka

REST APIs

CI/CD tooling

Job description

Software Developer IV, Viper Engineering

Toronto, ON, Canada

Job Description

Posted Tuesday, August 11, 2026 at 4:00 AM

If you are looking for a career at a dynamic company with a people-first mindset and a deep culture of growth and autonomy, ACV is the right place for you! 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. We hire people who share our passion, bring innovative ideas to the table, and enjoy a collaborative atmosphere.

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 Auctions Inc. (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. We are disruptors of the industry and we want you to join us on our journey. 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/AD&DD, Short-Term and Long-Term Disability.
• Comprehensive additional optional benefits such Critical Illness and Supplemental Life/AD&DD.
• All insurance benefits go into effect on your date of hire.
• Generous Parental Leave Top-Up Pay and Vacation Programs.
• Employee Stock Purchase Program with additional opportunities to earn stock in the company.
• Retirement planning through the Company’s RRSP.

Who we are looking for:

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.

What you will do:

• 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.
• Design and implement effective service/product interfaces, including third-party API integrations and extensible handler patterns for new integrations.
• 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
• Own larger, complex initiatives end-to-end—from discovery and requirements through delivery and production support—driving alignment across engineering and business stakeholders.
• Collaborate with software and production engineers to design scalable services, plan feature roll-out, and ensure high reliability and performance of our products.
• Design and develop systems across all major departments including but not limited to; 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.
• Perform additional duties as assigned.

What you will need:

• 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 maintaining and extending an existing codebase, adapting to pre-existing patterns and tracing the code’s path of execution across services.
• 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.
• Strong experience integrating with cloud service (AWS), specifically: SQS, SNS, S3, ECS, EKS, Lambda, ElasticSearch, Docker / Containers.
• 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).
• Minimum 8 years of experience working with continuous integration and build tools.
• 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.
• Expert at debugging distributed systems using distributed tracing and other common tools; able to lead root-cause analysis and preventative improvements.
• Top notch communication skills, including clearly communicating tradeoffs and aligning stakeholders.
• Experience architecting and designing systems from the ground up, including making pragmatic decisions for scalability, reliability, and maintainability.
• Experience working with a geographically dispersed team across multiple timezones, including leading technical alignment and delivery across teams.

#LI-AM3

Our Values

Trust & Transparency | People First | Positive Experiences | Calm Persistence | Never Settling

At ACV, we are committed to an inclusive culture in which every individual is welcomed and empowered to celebrate their true selves. We achieve this by fostering a work environment of acceptance and understanding that is free from discrimination. 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.

Compensation: The compensation range for this position is listed in the "Job Details" section at the bottom of this posting. Please note that final compensation will be determined based upon the applicant's relevant experience, skillset, location, business needs, market demands, and other factors as permitted by law.