Niagara Falls • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Niagara Falls • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Niagara Falls • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Niagara Falls • 50 milesRemote · Hybrid · Onsite · Field · All Environments
19 senior fullstack engineer jobs at 15 companies in Niagara Falls, NY
3w
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Senior Developer, Fullstack - Identity and Access Management (IAM)
Ottawa or Toronto or Calgary
$125k-$165k/yr RemoteFull Time
5+ YOE5+ years professional software development; experience with IAM, SSO (SAML, OAuth), RBAC, MFA; Ruby on Rails, React, JavaScript/TypeScript, GraphQL and Apollo; strong security and collaboration skills.
Ruby on Rails, React, JavaScript, TypeScript, GraphQL, Apollo, SAML, OAuth
2mo
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Staff Fullstack Engineer
Toronto or Canada
$175k-$200k/yr HybridFull Time
Expert TypeScript/React/NestJS experience, building and integrating LLM-driven features, product-minded engineering, mentorship experience, and working on multi-tenant systems preferred.
TypeScript, React, NestJS, Claude Code, Cursor, Large Language Models (LLM)
2w
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Fullstack Developer
Toronto, Ontario, Canada
OnsiteFull Time
Experience building enterprise Angular frontend and integrating with backend APIs and AWS; cloud-native development, scalable and secure applications; collaboration and mentoring skills.
Angular, AWS
2w
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.Net Fullstack Developer
Mississauga, Ontario, Canada
$70k-$85k/yr OnsiteFull Time
6+ YOE.NET Core and C# experience, 6+ years developing with Angular and Node.js, SQL Server and CI/CD knowledge; financial domain experience preferred; strong analytical and communication skills.
.NET Core, C#, Angular, Node.js, SQL Server, CI/CD
6d
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Staff FullStack Engineer, Okta Secures AI
Toronto, Ontario, Canada
$160k-$220k/yr HybridFull Time
Staff-level engineer requiring scalable backend architecture, Java or another type-safe language, JavaScript/TypeScript, AWS, web authentication and authorization, complex API integration, and AI-native development expertise.
Java, JavaScript, TypeScript, AWS, CI/CD, MCP, IPSIE, AI Agent Tool Registry, Agent Gateways, SDKs
3mo
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Principal Fullstack Software Senior Vice President
Mississauga, Ontario, Canada
$145k-$218k/yr HybridFull Time
10+ YOE5+ Mgmt10+ years software engineering, 5+ years senior leadership, strong experience with microservices, cloud-native platforms, API design, databases, Java/Go/Python/C#, Full stack Java backend with React or Angular, and use of AI dev tools (GitHub Copilot, Devin).
GitHub Copilot, Devin, Java, Go, Python, C#, Java Virtual Machine (JVM), AWS, Microsoft Azure, GCP, Kubernetes, REST, gRPC, SQL, NoSQL, React.js, Angular
1mo
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Fullstack Developer Lead Vice President
Mississauga, Ontario, Canada
$121k-$171k/yr HybridFull Time
6+ YOE6+ years apps development experience; 5+ years software development with 3+ years full-stack; strong Java (Spring Boot/Framework), expert ReactJS, RDBMS and NoSQL experience, CI/CD, cloud (AWS/Azure/GCP), containers (Docker/Kubernetes); bachelor’s degree or equivalent.
Java, Spring Boot, Spring Framework, ReactJS, Flux, Redux, PostgreSQL, Oracle, MySQL, MongoDB, Cassandra, DynamoDB, Jenkins, GitLab CI, GitHub Actions, Azure DevOps, AWS, Azure, GCP, Docker, Kubernetes, TensorFlow, PyTorch, Kafka, RabbitMQ, JUnit, Mockito, Jest, React Testing Library, GraphQL
2mo
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Fullstack Developer Lead Vice President
Mississauga, Ontario, Canada
$121k-$171k/yr OnsiteFull Time
6+ YOE6+ years apps development experience; 5+ years software development with 3+ years full-stack; strong Java (Spring Boot/Framework), ReactJS, RDBMS/NoSQL, CI/CD, cloud (AWS/Azure/GCP), Docker/Kubernetes; bachelor's or equivalent.
Java, Spring Boot, Spring Framework, ReactJS, Flux, Redux, PostgreSQL, Oracle, MySQL, SQL, MongoDB, Cassandra, DynamoDB, Jenkins, GitLab CI, GitHub Actions, Azure DevOps, CI/CD, AWS, Azure, GCP, Docker, Kubernetes, TensorFlow, PyTorch, Kafka, RabbitMQ, JUnit, Mockito, Jest, React Testing Library, GraphQL
1mo
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Staff Fullstack Engineer, User Auth Experience
Toronto, Ontario, Canada
OnsiteFull Time
12+ YOE12+ years software development, technical lead experience, full‑stack (frontend & backend) expertise, strong communication and collaboration skills.
SSO, MFA, passkeys, WebAuthn, OAuth, API, SDKs, RBAC, SCIM
6d
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Senior Fullstack Engineer
Toronto or British Columbia
$160k-$190k/yr RemoteFull Time
6+ YOEComputer Science degree or equivalent practical experience, 6+ years of experience, strong frontend and backend web development, AI-native tooling, TypeScript, React, Ruby, APIs, PostgreSQL, Redis, testing, and mentoring experience.
TypeScript, React, Chakra, React Hook Form, Ruby, Ruby on Rails, GraphQL, Postgres, Redis, Jest, Cypress, RSpec, Minitest, Buildkite, GitHub, Codex, Claude Code, Cursor, Sidekiq, GoodJob
3mo
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Sr Software Engineer- Fullstack
Toronto, Ontario, Canada
RemoteFull Time
5+ YOE5+ years of software engineering experience; strong Python backend and API development; AWS serverless; IaC and observability; React/TypeScript frontend; collaboration with design/product; AI tools in SDLC.
Python, AWS, API Gateway, Lambda, DynamoDB, Terraform, GitHub Copilot, Cursor
3w
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Fullstack developer with Python, .NET & AI experience
Toronto, Ontario, Canada
$110k-$120k/yr HybridFull Time
6+ YOEBachelor's in CS,6+ years software development,proficient in Python,.NET,JavaScript and modern frontend frameworks,experience with Pandas/NumPy,SQL,REST APIs,cloud (Azure/AWS/GCP),Docker,microservices and AI/ML integrations.
Python, .NET, React, Angular, JavaScript, Pandas, NumPy, SQL, Apache Airflow, Docker, Azure, AWS, GCP, Claude, GitHub Copilot, Cursor, OAuth2, REST APIs
3w
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Senior Software Engineer Fullstack
Ottawa or Toronto
OnsiteFull Time
5+ YOE5+ years building production backend and frontend systems; strong Python and JavaScript/TypeScript; SQL/NoSQL and real-time visualization experience; hardware/embedded integration experience; eligibility for Canadian security clearance.
Python, JavaScript, TypeScript, SQL, NoSQL, CI/CD, AI tools
2mo
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Sr Lead Java Fullstack Software Engineer
Mississauga, Ontario, Canada
$145k-$218k/yr HybridFull Time
10+ YOE10+ years full-stack web development experience with Java/Spring Boot and Angular; experience with SQL Server, Elasticsearch, Kafka, GitHub/Bitbucket, CI/CD; leadership, systems analysis, and project delivery experience; Bachelor's degree or equivalent.
Java, Spring Boot, Angular, TypeScript, HTML5, CSS, Kendo UI, SQL Server, Elasticsearch, Kafka, GitHub, Bitbucket, CI/CD, AWS, Azure, GCP, Docker, Kubernetes, OpenShift
2mo
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Sr Lead Java Fullstack Software Engineer
Mississauga, Ontario, Canada
$145k-$218k/yr HybridFull Time
10+ YOE10+ years experience; full-stack Java/Spring Boot and Angular; SME in Applications Development; strong leadership and communication.
Java, Spring Boot, Angular, Kendo UI, micro front-end, API design, microservices, SQL Server, Elasticsearch, Kafka, GitHub, Bitbucket, CI/CD, Cloud (AWS/Azure/GCP), Docker, Kubernetes/OpenShift, Testing frameworks
1mo
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Fullstack Software Engineer (x/f/m) - Care Expert Copilot
France or Belgium or Spain or Toronto
HybridFull Time
5+ YOE5+ years building scalable full-stack systems; backend and frontend experience; experience with React, Python/Flask, PostgreSQL; strong problem-solving and communication.
React, Python, Flask, PostgreSQL
3mo
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Principal Fullstack Software Senior Vice President
Mississauga, Ontario, Canada
$145k-$218k/yr HybridFull Time
10+ YOE5+ Mgmt10+ years software engineering, 5+ years senior leadership, expertise in microservices, cloud-native platforms, API design, modern languages (Java, Go, Python, C#), and hands-on use of AI developer tools.
GitHub Copilot, Devin, Java, Go, Python, C#, AWS, Microsoft Azure, GCP, Kubernetes, REST, gRPC, SQL, NoSQL, React.js, Angular, Java Virtual Machine (JVM)
2mo
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Associate Director, Lead Fullstack Developer (React/Node.js)
Toronto, Ontario, Canada
OnsiteFull Time
10+ YOE3+ Mgmt10+ years software engineering experience with MERN/TypeScript, Next.js, NestJS, Docker, Kubernetes; 3+ years people management; experience with cloud, CI/CD, CI tools, design systems, REST/GraphQL.
MongoDB, Express.js, React.js, Node.js, Next.js, NestJS, Docker, Kubernetes, TypeScript, GraphQL, WebSockets, SQL Server, PostgreSQL, AWS, Azure, GCP, Helm, Terraform, Nx, Redis, KeyDB, Solace, Kafka, MUI, Storybook, CI/CD
4w
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Java Scala Developer
Toronto, Ontario, Canada
$77k-$120k/yr OnsiteFull Time
5+ YOEFullstack Java enterprise development with Spring Boot, Hibernate/JPA and front-end (Angular/React); 5+ years Scala; SQL/PLSQL and NoSQL experience; API, system design, CI/CD, and strong problem-solving skills.
Java, Scala, Spring Boot, Hibernate/JPA, Angular, React, PL/SQL, SQL, Oracle, MongoDB, AI/ML, LLMs, Elasticsearch, Kafka, GraphQL, OpenShift, Redis, Hazelcast, J2EE, CI/CD
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