257 senior full stack engineer jobs at 140 companies in Newfane, NY
1w
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Senior Full-Stack Engineer (Media Team)
Ottawa or Toronto
$120k-$145k/yr HybridFull Time
Senior-level backend or full-stack engineer with strong cloud (AWS) and distributed systems experience, observability knowledge, and service ownership mindset.
AWS, SQS, S3, Lambda, EKS, Redis, CloudFront, OpenTelemetry, Datadog, Grafana, Honeycomb, WebRTC, HLS, RTSP, ffmpeg, Kubernetes, GCP, Azure, TypeScript, Rust
2mo
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Senior Full Stack Developer
Toronto or Montreal
$100k-$130k/yr HybridFull Time
5+ YOESenior full stack developer with Node.js/NestJS, TypeScript, React/Next.js, AWS serverless, SQL/NoSQL, and CI/CD; mentoring and cross-functional collaboration.
Node.js, NestJS, TypeScript, React, Next.js, PostgreSQL, MongoDB, DynamoDB, Elasticsearch, AWS, S3, Lambda, Docker, Terraform, Jest, Mocha
3w
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Senior Full Stack Engineer
Toronto, Ontario, Canada
$120k-$145k/yr HybridFull Time
5+ YOE5+ years full-stack experience with C#/.NET, SQL and Azure; bachelor\u0002s degree in a technical field; strong design, testing, troubleshooting, and communication skills.
C#, .NET, .NET Core, SQL Server, Azure Functions, App Services, Azure SQL, Storage Accounts, Key Vault, Python, Blazor, JavaScript, HTML/CSS, Azure Data Factory, Azure DevOps, Git, CI/CD, REST APIs, Entity Framework
1mo
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Senior Engineer- Full stack
Toronto, Ontario, Canada
$99k-$136k/yr OnsiteFull Time
8+ YOE8+ years full stack experience with Java, Spring Boot, Spring Batch, Node.js, React, JavaScript, and SQL; bachelor's degree or equivalent; strong design, secure coding, and mentoring skills.
React, JavaScript, HTML, CSS, Java, Spring Boot, Spring Batch, Node.js, SQL, RESTful APIs, AWS, Azure, Google Cloud, CI/CD
3d
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Senior Full Stack Engineer
Toronto, Ontario, Canada
$133k-$182k/yr RemoteFull Time
Full-stack development experience with Go and React or comparable technologies; REST and WebSocket APIs; PostgreSQL and schema design; AI coding agents; networking, testing, security, and end-to-end software ownership.
Go, React, TypeScript, PostgreSQL, Redis, Claude Code, Cursor, Copilot, REST, WebSocket, MCP
1mo
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Senior Full-Stack Developer
Toronto or Canada
$120k-$160k/yr RemoteFull Time
6+ YOE6+ years building production full‑stack web applications with production experience in Angular, TypeScript, and C#/.NET; Bachelor’s in CS or equivalent experience; ability to own features end‑to‑end and work in a remote, collaborative environment.
Angular, TypeScript, RxJS, NgRx, Angular Material, Tailwind CSS, C#/.NET, Entity Framework Core, PostgreSQL, SQL Server, Redis, Firestore, Google Cloud Platform, Kubernetes, Docker, Terraform, Pub/Sub, Microsoft Azure DevOps, Git, Webpack, Cypress, Playwright, Grafana, REST APIs
2mo
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Senior Full Stack Developer - Web Platform
Toronto or Canada
$65-$85/hr HybridContract
5+ YOESenior full-stack engineer with 5+ years experience; strong TypeScript/JavaScript, NestJS/Express, PostgreSQL, modern frontend (React/Next.js/Vue); AWS/cloud experience; familiarity with Stripe/GTM and AI coding tools (GitHub Copilot, Claude, Codex).
GitHub Copilot, Claude, Codex, TypeScript, JavaScript, NestJS, Express, PostgreSQL, React, Next.js, Vue, Stripe, GTM, AWS
1w
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Senior/Staff Full-Stack Engineer
South San Francisco or Toronto
$150k-$250k/yr HybridFull Time
Deep full-stack experience building frontend, backend, database, deployment, and secure, reliable production applications; strong communication and collaboration in small teams.
2mo
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Senior Developer (Full-stack)
Montréal or Toronto or Quebec
RemoteFull Time
6+ YOE6+ years in SaaS development; strong Angular, TypeScript/JavaScript, Node.js/NestJS; experience with microservices (Azure Service Bus or Kafka), PostgreSQL, CI/CD, IaC, observability, cloud platforms (preferably Azure); mentoring and communication skills.
Angular, Azure Service Bus, Kafka, TypeScript, JavaScript, Node.js, NestJS, PostgreSQL, ELK, Grafana, Prometheus, Sentry, Datadog, New Relic, GitLab, Jenkins, GitHub Actions, Docker, Helm, Terraform, Kubernetes, Azure, AWS, GCP, Graph databases, FHIR
1mo
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Senior Full Stack Engineer, AI
Toronto, Ontario, Canada
$120k-$150k/yr HybridFull Time
5+ YOESeveral years shipping production full-stack web apps; strong TypeScript, Node.js, React/Next.js, SQL/Postgres; end-to-end ownership; AI/agentic workflow experience; disciplined git and testing practices; strong communication and product judgment.
TypeScript, Node.js, React, Next.js, SQL, Postgres, git, LangChain, LlamaIndex, Vercel AI SDK, OpenAI, Anthropic, Gemini
2mo
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Senior Full Stack Developer/Lead
Toronto, Ontario, Canada
$95k-$145k/yr HybridFull Time
10+ YOEBachelor's degree,10+ years full-stack experience with Java (Spring Boot), front-end (React/Angular), cloud (AWS/Microsoft Azure/GCP), microservices, P&C insurance domain knowledge, and AI/ML integration experience.
Java, Spring Boot, Spring Cloud, React, Angular, TypeScript, AWS, Microsoft Azure, GCP, PostgreSQL, MongoDB, Snowflake, Databricks, Spark, Terraform, Kubernetes, CI/CD, Microservices, REST APIs, Generative AI
1mo
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Full Stack Developer
Toronto, Ontario, Canada
OnsiteFull Time
5+ YOE5+ years experience building full-stack web applications using Java/Spring Boot, Python frameworks, React/TypeScript, SQL; strong problem-solving and communication skills.
Java, Spring Boot, SQL, Fast API, Flask, Django, JavaScript, TypeScript, ReactJS, Git, Microsoft Azure, OpenAI, LangChain, vector databases
3w
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Staff Full Stack Engineer
Calgary or Toronto
OnsiteFull Time
7+ YOE7+ years full-stack engineering experience, deep frontend (React/Angular/Next.js/TypeScript) and backend (Node.js/Python) skills, cloud/CI-CD, databases, testing, and experience integrating AI services.
React, Angular, Next.js, TypeScript, Node.js, Python, Claude, Cursor, Figma, LLM APIs, CI/CD
6d
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Senior Full-Stack Software Engineer
Toronto, Ontario, Canada
$120k-$180k/yr OnsiteFull Time
5+ YOE5+ years full-stack experience with JavaScript/TypeScript and React, Node JS, MongoDB, cloud deployment experience, and experience shipping production software.
React, TypeScript, JavaScript, MongoDB, REST API, Node JS, Google Cloud, Amazon Web Services, Microsoft Azure
9h
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Senior Full-Stack Engineer, North Tools & Retrieval
Europe or London or San Francisco or New York City or United Kingdom or Toronto or Montreal or Paris or Berlin or Seoul
$180k-$310k/yr RemoteFull Time
Production full-stack experience with Python and React; strong cross-stack coding, end-to-end feature ownership, performant RAG or agentic applications, product judgment, and UX focus.
Python, React
3d
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Senior Full Stack Engineer, Designer Team
Toronto or New York City
$130k-$182k/yr OnsiteFull Time
5+ YOE5+ years building production software; independently ships full-stack features in large codebases; proficiency in at least two core languages; writes tested code and demonstrates collaboration, judgment, and technical ownership.
TypeScript, Ruby, Python, Rust, Go, C++
4w
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Senior Full Stack Engineer, App Runtime
Toronto, Ontario, Canada
$245k-$295k/yr OnsiteFull Time
5+ YOEBachelor's in CS or related,5+ years frontend/full-stack experience,proficiency with React and TypeScript/JavaScript,experience with Go/Python/Java,knowledge of modern web architecture and API design,strong communication.
React, Go, Python, Java, TypeScript, JavaScript, NextJS, Node.js
2mo
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Senior Full-Stack Developer
Toronto, Ontario, Canada
$140k-$160k/yr HybridFull Time
7+ YOEBachelor's or equivalent, 7+ years software engineering experience, strong JavaScript/TypeScript, NodeJS, GraphQL, SQL/NoSQL, React/NextJS, API and microservices experience, Git, and applied AI familiarity.
JavaScript, TypeScript, NodeJS, GraphQL, SQL, NoSQL, HTML, CSS, React, NextJS, Git, Git flow, Github flow, Java, Kotlin, Python, ML, Data Science
1mo
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Senior Full-Stack Automation Engineer – Gravity
Toronto, Ontario, Canada
$115k-$176k/yr HybridFull Time
5+ YOEMust be a Canadian citizen based in Canada; 5+ years software engineering with heavy desktop automation experience; expert Python and Node.js; hands-on React, AWS, SQL; AI/ML familiarity; strong client communication.
Python, Node.js, React, AWS, SQL
5d
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Senior Full-Stack Engineer
Etobicoke, Ontario, Canada
$145k-$165k/yr HybridFull Time
5+ YOERequires 5+ years of professional software development experience, C# and .NET/Core, PostgreSQL, AWS cloud services, distributed architectures, testing, Git, English communication, and a computer science or related degree or equivalent experience.
C#, .NET, PostgreSQL, Entity Framework, AWS Lambda, AWS SQS, AWS Aurora Serverless, AWS S3, MassTransit, Quartz.NET, xUnit, Moq, FluentAssertions, Git, Windows, Linux, OAuth2, OIDC, JWT, SSO, MFA, MCP
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