Backend Engineer - Remote
YO AI Labs
Toronto, ON
- Remote job
Senior Software Engineer
Job Type: Contractor (~15 hours/week)
Location: Remote
Job Summary
We are seeking experienced Senior Software Engineers to support an AI training project by creating reinforcement learning environments that evaluate AI models on complex software engineering tasks using Model Context Protocol (MCP) tools.
You will design reproducible environments, deterministic verification, and reference solutions for tasks such as bug fixing, feature implementation, codebase refactoring, and performance optimization . No prior AI experience is required.
Key Responsibilities
- Create reinforcement learning environments for software engineering tasks.
- Design tasks involving bug fixing, feature development, refactoring, and performance optimization .
- Build deterministic verification systems and golden reference solutions.
- Evaluate AI agents' ability to reason through complex codebases and use MCP tools effectively.
- Develop realistic, reproducible software engineering scenarios.
- Ensure tasks accurately measure coding ability, problem-solving, and tool usage.
- Document solutions and provide clear technical feedback.
Required Skills
- Strong proficiency in Python 3, Java, Rust, C++, or TypeScript .
- Strong understanding of algorithms and data structures .
- Experience with bug fixing and debugging complex software issues .
- Proven experience in feature implementation and codebase refactoring .
- Strong knowledge of performance optimization and tuning .
- Excellent written and verbal communication.
- Strong attention to detail.
Preferred Qualifications
- Experience working with large-scale or distributed codebases .
- Familiarity with AI/ML systems is a plus but not required.
- Experience with rigorous code reviews and software engineering best practices .
- Experience working effectively in remote or cross-functional teams.
Hiring Process
- Submit an application and screening questions.
- Complete an AI interview (~30 minutes).
- Complete a technical assessment, if required.
- Hiring Manager review.
Compensation
Compensation is output-based , with payment provided per task that meets project specifications. Minimum weekly submission requirements may apply.
Availability
Selected experts should be prepared to begin their first tasks within 24–48 hours of completing onboarding .
Vacancy posted 3 days ago
Similar jobs that could be interesting for youBased on the Backend Engineer - Remote in Toronto, ON vacancy
- ...What you'll do: Design and implement backend architecture following best software engineering principles Develop clean, efficient code with tests ensuring code quality Participate in code reviews and invite others to review your code Champion the importance of...SuggestedFull timeWork at officeWork from home
$105k - $125k per year
...General Information: Job Title: Backend Engineer III Location: Toronto (Onsite/ Hybrid)... ...models Experience building workflow engines, pipelines, or DAG-based processing Familiarity... ...Flexibility to Thrive We support remote and hybrid work models by offering...Remote workLong term contractFull timeInternshipWork at officeLocal areaImmediate startFlexible hours- ...and supporting production-ready products from scratch. ~5+ years of professional experience with Java. ~6+ years of experience in backend development. ~ Quick learner with an ambitious and results-driven personality. ~ Excellent communication and organizational...SuggestedFull timeInternshipImmediate start
- ...and terabytes of data per day? Zynga is looking for a Software Engineer to join the Data Ingestion team in our Analytics organization. The... ...You'll Do: Design, build and own data-driven large-scale backend services to be consumed by clients across multiple platforms (mobile...SuggestedLocal area
- ..., flexibly, and collaboratively — without compromising standards — we want to hear from you. We're looking for an exceptional backend engineer and hands-on architect to help us scale and connect millions of devices to wireless networks. The projects and potential impact are...SuggestedFull timeWorldwide
- ...Certified Great Place to Work in 2021, 2022 and 2023. Introduction: AppLovin's Array team is seeking an experienced Staff Backend Software Engineer to join our team. Array is a seamless, end-to-end app management suite that delivers more value for mobile operators and end...Work from homeFlexible hours
$150k - $200k per year
Job Responsibility: Stan is the Shopify for Content Creators , empowering anyone to make a living working for themselves on the internet. We're a team of high-performers backed by the top VCs (Forerunner, Pear and Norwest) and angel investors (Kevin Hartz, Michael Ovitz...Full time$160k - $220k per year
...This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. The Staff Software Engineer Opportunity Passkeys, powered by FIDO2 WebAuthn, are revolutionizing how people authenticate—bringing us into a passwordless future...Local areaWorldwide$50 - $53 per hour
...Job Responsibility: Job Title: Platform Engineer Location: Toronto Downtown,Canada Job Type: Full time contract Department: Engineering... ...microservices using Docker containers. Develop and maintain backend services using Python, adhering to scalable and maintainable...Hourly payFull timeContract workRelocationMonday to friday$180k - $210k per year
...About Us We’re looking for a Staff Engineer - User Experience (Backend) to join our Patient Platform team and shape the systems that power patient... ...design reviews, and technical leadership. This is a fully remote role, open to candidates based in Ontario, with...Remote workContract workInternshipLocal areaImmediate startFlexible hours$160k - $220k per year
...ensuring users can seamlessly interact with their work from any endpoint, anywhere in the world. Our organization is comprised of engineers who thrive at the intersection of deep client-side platform engineering and massive-scale distributed systems. The work we do...Long term contractLocal areaWorldwide$185k - $285k per year
...ingestion platform underneath it all. It is a mix of product and backend engineering shaping the APIs and deeper backend components our customers... ...Lambda SQS Kafka EventBridge). Orchestration and workflow engines (Step Functions Temporal). JVM languages for cross-team...Full timeInternshipWork at officeFlexible hours- ...this role is only open to Toronto/GTA-based candidates. About the role Were looking for a software engineering intern whos excited to tackle complex backend challenges. This is an opportunity to work on real production systems contributing to the integration platform...InternshipWork at office
$85k - $105k per year
...Xello is looking for a Backend Engineer This role is a remote role, looking for candidates within Canada only. __ Xello is looking for a Backend Engineer to help build and support the backend services, APIs, and data-intensive systems that power our content management...Remote workFull timeFlexible hours$61 - $71 per hour
...Backend Developer (Camunda / Orchestration) — Remote Drive innovative digital experiences within the insurance sector by contributing to the development of advanced workflow and orchestration solutions that support application lifecycle tracking and electronic document...Remote workHourly payPermanent employmentContract work$170k - $220k per year
...with their work from any endpoint, anywhere in the world. We engineer the end-to-end device experience—from our flagship FastPass ,... ...innovations on the Okta Engineering Blog . Staff Software Engineer- Backend , Device Identity We seek a dynamic and influential Staff...Long term contractLocal areaWorldwide- ...retention tools to prevent customer churn. What you'll do As an engineer on the team, you'll be responsible for shaping and building a... .... Minimum requirements ~2–12+ years of experience in backend software development ~ Ability to write high-quality code (in...Contract workInternship
- ...get there! About the Senior Software Engineer role As a Senior Software Engineer, you... ...do full-stack development with a focus on backend: anything from building features to... ...and a $1,500 work-from-home stipend. Remote-first with hybrid flexibility : We're a...Remote workPermanent employmentFull timeSummer workInternshipWork at officeWork from homeShift work
Motion
Toronto, ON3 days ago $156k - $214.5k per year
...in community, come join ours. About this role: Our Brand engineering team owns the code that our Brands use to manage their business... ...Additionally, hybrid in-office roles will have the flexibility to work remotely up to 4 weeks per year. Specific Workplace and Information...Remote workWork at officeLocal areaMonday to friday3 days per week$185k - $231.5k per year
...DoorDash is building the world's most reliable on-demand, logistics engine for delivery! We're looking for experienced engineers to join our... ...problems with elegant technical solutions. You'll operate our backend services and architecture that support all product functionality...Full timeLocal area- ...Principal Engineer Location: Toronto/GTA preferred; Ottawa considered Employment Type... ...: Full-time, permanent Work Model: Remote within Canada Build the Future of Global... ...Deep expertise in distributed systems, backend architecture, APIs, microservices, cloud...Remote jobLong term contractPermanent employmentFull timeInternshipFlexible hours
$129.5k - $178k per year
...first step in that journey. As a Product Engineer on the Brand pillar, you will be... ...across multiple stacks, potentially including Backend, Frontend, and Mobile Optimize web applications... ...roles will have the flexibility to work remotely up to 4 weeks per year. Specific...Remote workLong term contractWork at officeLocal areaMonday to friday3 days per week$156k - $214.5k per year
...retailers to keep buying. As a Senior Engineer, you'll own the systems that make that promise... ...You like owning a domain end to end: backend services, the metrics that measure them,... ...roles will have the flexibility to work remotely up to 4 weeks per year. Specific Workplace...Remote workWork at officeLocal areaMonday to friday3 days per week$118k - $152k per year
...business impact. The Role We're looking for a Staff Java Engineer who combines deep technical expertise with a passion for engineering... ...and engineering teams to design and deliver resilient, scalable backend solutions using modern Java technologies, cloud platforms, and...Long term contractInternshipImmediate start- ...Senior Backend Engineer – Kotlin, Terraform, IaC, AKS Role: Sr. Backend Engineer Location: Toronto- Hybrid: 3 days a week onsite (Tuesday-Thursday) Primary Skill Set • Infrastructure as Code (IaC) / InfraOps • Terraform • Kotlin Job Description...Contract work3 days per week
$120k - $150k per year
...Help us build the world's most reliable, on-demand logistics engine for last-mile delivery! We're bringing on experienced engineers to... ...excited about you because… You have 2+ years of experience in backend, infrastructure, or platform engineering. You have experience...Long term contractFull timeContract workLocal area$147.3k - $192k per year
...operations throughout North America, Central America, Europe, Australia, and Japan. We’re looking for a Lead Software Engineer to join our team in a backend developer role.This is a hands-on technical leadership role for someone who thrives at the intersection of big-picture...- ...Description The Opportunity: We're looking for an experienced Java Backend Developer to join our dynamic team. You'll play a crucial role... ...and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI,...Permanent employmentFull timeLocal area
$72k - $138k per year
...Server, including data modeling, query optimization, and ORM frameworks such as Hibernate/JPA. Strong understanding of software engineering best practices, including SDLC, code reviews, testing, CI/CD, and version control. Minimum 3+ years of experience working in Agile...Long term contractTemporary workFixed term contractFlexible hours$100k - $120k per year
...tackling bold challenges, join us! We are a close-knit group of engineers of different stripes - developers, designers, and product owners... ...work, while balancing your personal and life needs. Offering remote work flexibility, along with the opportunity to interact and collaborate...Remote workCasual workManual laborWork at officeWork from homeFlexible hours2 days per week3 days per week
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Backend Engineer - Remote. Be the first to apply!
Related searches
- backend software developer Toronto, ON
- backend developer Toronto, ON
- react node js developer (remote) Toronto, ON
- remote payroll Toronto, ON
- remote healthcare consultant Toronto, ON
- remote data engineer Toronto, ON
- remote recruiter Toronto, ON
- télétravail domicile Toronto, ON
- remote amazon Toronto, ON
- remote business Toronto, ON