465 full stack engineer jobs at 172 companies in Niagara Falls, NY

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Senior Full Stack Engineer, App Runtime
Toronto, Ontario, Canada
$245k-$295k/yr OnsiteFull Time
Snowflake
SnowflakeNYSE: SNOW: Cloud-based data platform for AI, analytics, and data applications.
5+ YOEBachelor's degree in Computer Science, Engineering, or related field; 5+ years of frontend or full-stack development experience; expertise in web architecture, React, API design, security, performance, and scalable systems.
React, Go, Python, Java, TypeScript, JavaScript, Next.js, Node.js
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Senior Full Stack Engineer
Toronto, Ontario, Canada
HybridFull Time
OpenTable
OpenTable: Online restaurant reservation and restaurant-management technology provider serving diners and restaurants as a Booking Holdings subsidiary.
5+ YOE5+ years software engineering experience; strong full-stack experience with React, TypeScript, JavaScript; web/network stack knowledge; CI/CD practices; English proficiency; ability to work with design and product partners.
WordPress, PHP, Apache, React, TypeScript, JavaScript, Akamai, Slack
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Full Stack Developer
Mississauga, Ontario, Canada
$34-$42/hr OnsiteFull Time, Contract
Skilled Trades Ontario
Skilled Trades Ontario: Ontario Crown agency administering apprenticeship, skilled-trade certification, exams, and registries for apprentices and tradespeople.
2+ YOEUniversity degree in computer science or software engineering or equivalent; 2 years full stack development; knowledge of SDLC, network security, UI/UX, AODA, databases, and system integration; expertise in REST API, HTML, CSS, JavaScript, PHP, .Net, C#, SQL, WordPress, SharePoint, and DevOps.
REST API, HTML, HTML5, XML, CSS, JavaScript, PHP, .Net, C#, Json, WordPress, SharePoint, MS SQL, T-SQL, MySQL, IIS, Tomcat, Oracle AS, IBM WebSphere, Entity Framework, WCF, XHTML
2mo
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Software Engineer, Full Stack
Toronto, Ontario, Canada
$110k-$200k/yr HybridFull Time
Gigi
Gigi: AI media-management software helping advertising agencies build, optimize, and measure Amazon DSP campaigns.
Production software experience, strong full-stack engineering fundamentals, system design, APIs, data models, interfaces, testing, debugging, and comfort using AI coding tools across the stack.
Codex, Claude Code, Cursor, Python, FastAPI, LangGraph, LangChain, TypeScript, Vue, Nuxt, Java, Spring Boot, PostgreSQL, pgvector, Redis, NATS, AWS, Apple
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Full-Stack Engineer
Toronto or San Francisco or Memphis
RemoteFull Time
Attention Labs
Attention Labs: AI audio software helping voice devices identify who is speaking to them before speech recognition.
Experience across databases, API layers, and modern front ends; history of shipping products end to end; strong judgment, developer experience focus, and comfort with ambiguity. Developer tools, SDK, or real-time systems experience is a bonus.
SDK, API
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Senior Full Stack Engineer
Toronto, Ontario, Canada
OnsiteFull Time
Strada
Strada: Private insurance AI platform helping carriers, MGAs, brokers, and TPAs automate servicing, claims, sales, and customer communications.
4+ YOE4+ years in full-stack web development; deep TypeScript, React, and Node.js experience; AWS or cloud infrastructure and PostgreSQL experience; strong communication and project ownership skills.
TypeScript, React, Node.js, AWS, PostgreSQL, Vite, TanStack Router, TanStack Query, TanStack Table, Temporal, MacBook Pro
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Senior Full Stack Engineer
Toronto, Ontario, Canada
$133k-$182k/yr RemoteFull Time
Mattermost
Mattermost: Private open-source collaboration software serving national security, government, and critical infrastructure teams.
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
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[C] Full Stack Developer
Toronto, Ontario, Canada
OnsiteContract, Part Time
Maple Leaf Sports & Entertainment
Maple Leaf Sports & Entertainment: Private Canadian sports and entertainment holding owning professional teams and operating venues for Toronto fans.
1+ YOERequires 1–2 years of full-stack experience, React, Python, APIs, AWS familiarity, SDLC knowledge, testing, security, collaboration, and project delivery experience.
React, Python, AWS, React Native, Claude Code, GitHub Copilot, Cursor, Swift, Figma, InVision, Adobe XD, CI/CD
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Full-Stack Software Engineer
Waterloo or Toronto
$86k-$136k/yr HybridFull Time
Manulife
ManulifeTSX / NYSE: MFC: International financial services and insurance provider.
5+ YOERequires 5+ years of full-stack engineering experience with React, Node.js, Express, JavaScript, HTML5, CSS3, front-end testing, Redux, accessibility standards, agile, and DevOps principles.
React, Node.js, Express, JavaScript, HTML5, CSS3, Redux, WCAG 2.1, Adobe Experience Manager (AEM), Azure Kubernetes Services (AKS), PaaS, Jenkins, Team City, GitHub Actions, SonarQube, Fortify, WebInspect, CI/CD, DevSecOps
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Full Stack Developer (262547)
Toronto, Ontario, Canada
OnsiteFull Time
Scotiabank
ScotiabankTSX: BNS: Global financial institution providing personal, commercial, and investment banking services.
2+ YOEBachelor's degree or equivalent, 2–4 years of full-stack development experience, and familiarity with React, Next.js, Node.js, Java, cloud platforms, APIs, databases, DevOps, security, and Agile.
React.js, Next.js, JavaScript, TypeScript, Node.js, Java, Spring Boot, Kafka, Google Pub/Sub, Google Cloud, Cloud Run, Cloud Functions, Microsoft Azure, App Services, Key Vault, Git, Jenkins, GitHub Actions, SSL/TLS, OAuth2, JWT, SQL, PostgreSQL, Azure SQL, MongoDB, Docker, Kubernetes
3w
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Full-Stack Developer - Core
Toronto or Montreal
HybridFull Time
MaintainX
MaintainX: Modern maintenance and asset management software platform.
5+ YOE5+ years full-stack web or mobile development; deep experience with TypeScript, React, Node.js; strong communication; maintainable code; day-to-day AI tool use; on-call rotation.
TypeScript, React, Node.js, MySQL, C#, Python, GraphQL, React Native, SQL
2w
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Senior Full Stack Developer
Toronto or Montreal
$107k-$157k/yr OnsiteFull Time
Autodesk
AutodeskNASDAQ: ADSK: Global provider of software for design, engineering, and manufacturing.
5+ YOE5+ years full-stack web or mobile development; deep TypeScript, React, Node.js; mobile-first responsive development; maintainable testable code; strong communication; daily AI tool use; on-call rotation.
TypeScript, React, Node.js, MySQL, C#, Python, GraphQL, React Native, SQL
2mo
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Full Stack Software Engineer
Mississauga, Ontario, Canada
$94k-$142k/yr HybridFull Time
Citi
CitiNYSE: C: Global financial services organization enabling growth and economic progress.
4+ YOERequires 4+ years of software engineering experience, Java and Spring Boot expertise, full-stack development, distributed systems, cloud-native infrastructure, CI/CD, testing, AI coding assistants, and a bachelor's degree or equivalent experience.
Java, Spring Boot, Apache Kafka, IBM MQ, ReactJS, Spring, Oracle, MongoDB, Kubernetes, Docker, OpenShift, JUnit, JMeter, Mockito, Cucumber, Jenkins, GitHub Actions, CoPilot, Devin, Claude Code
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Senior Full-Stack Engineer (North Admin)
Toronto or Canada or San Francisco or New York City or Montreal or London or Paris or Berlin or Seoul
RemoteFull Time
Cohere
Cohere: Security-first enterprise AI building foundation models.
Production full-stack experience with Python and React, strong cross-stack coding ability, enterprise and startup experience, and experience deploying performant RAG or agentic applications at scale.
Python, React
2w
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Intermediate Full-Stack Developer
Toronto, Ontario, Canada
$70k-$90k/yr HybridFull Time
Method Integration Inc.
Method Integration Inc.: The customizable CRM that automates your real-world workflows, so everything fits the way your business actually works.
2+ YOE2+ years full-stack web development; strong C#, .NET Core, .NET 6/7/8, Web API, MVC, REST, design patterns, SPA, monolith vs microservices, Git; JavaScript, HTML5, CSS, Angular/React; SQL/NoSQL; unit/integration testing; Agile experience.
C#, .NET Core, .NET 6/7/8, Web API, MVC, REST, Git, JavaScript, HTML5, CSS, Angular, React, SQL, NoSQL, Storybook, AWS, Lambda, QuickBooks, Linux, Docker, Redux, MongoDB, Elasticsearch, Redis, RabbitMQ, MassTransit, CI/CD, Playwright, Python, SQS
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Senior Software Engineer – Full Stack
Toronto, Ontario, Canada
$125k-$160k/yr HybridFull Time
Publicis Sapient
Publicis Sapient: Enterprise technology helping global organizations modernize systems, deploy AI agents, and improve operations.
7+ YOE7+ years full stack development experience; proficiency in React, JavaScript, Java (Spring Boot), Python (FastAPI); REST APIs, microservices, RDBMS, NoSQL, messaging platforms, DevOps, containerization, Agile, and transactional systems.
React, JavaScript, Java, Spring Boot, Python, FastAPI, REST APIs, Oracle, MSSQL, PostgreSQL, MongoDB, ELK, Solace, MQ, Kafka, Ansible, HELM, Docker, Kubernetes, OpenShift, JIRA, Confluence, Flask, Django, SWIFT, ISO 20022, AWS, Azure, GCP, JWT, OAuth
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Full Stack Engineer - Azure & Microsoft
Oakville, Ontario, Canada
$130k-$150k/yr OnsiteFull Time
Emterra Group
Emterra Group: Canadian-owned waste and recycling serving homes, businesses, municipalities, and industrial customers across North America.
5+ YOE5+ years full stack development; proficiency in a modern front-end framework and .NET/C#, Node.js, or Python; 3+ years Azure experience; Microsoft 365 integration; API design, databases, DevOps, and production support.
React, Angular, Vue.js, .NET, C#, Node.js, Python, REST, GraphQL, Microsoft 365, Azure SQL, Cosmos DB, Azure App Service, Azure Functions, Logic Apps, Service Bus, API Management, Microsoft Entra ID, Power Automate, Power Apps, Power BI, Teams, SharePoint, Microsoft Graph, Azure DevOps, GitHub Actions, Microsoft Fabric, Azure Synapse Analytics
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Full Stack Engineer, Money as a Service
Toronto, Ontario, Canada
$135k-$203k/yr OnsiteFull Time
Stripe
Stripe: Financial infrastructure platform for online businesses and enterprises.
2+ YOE2+ years software engineering experience (2-12+), full-stack (frontend and backend), strong data modeling, excellent written and verbal communication, collaborate across stakeholders.
Instant Payouts, Issuing, Capital, Terminal, Connect