28 senior full stack developer jobs at 22 companies in Tonawanda, NY

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
2w
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Senior Full-Stack Developer
Toronto or Canada
$120k-$160k/yr RemoteFull Time
Flinks
Flinks: Embedded finance platform for financial data connectivity and payments.
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
1w
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Senior Full Stack Software Engineer
Toronto, Ontario, Canada
$113k-$163k/yr HybridFull Time
Manulife
ManulifeTSX: MFC: Provides insurance, wealth management, and investment services globally.
5+ YOE5+ years full-stack development; strong Java, Spring Boot, Python; experience with Docker, Kubernetes, Azure, SQL Server, Databricks; CI/CD; capital markets and derivatives knowledge; AI/ML integration experience.
Java, Spring Boot, Python, Docker, Kubernetes, Azure, SQL Server, Databricks, Bloomberg, Reuters, Murex, Findur, Aladdin, Azure OpenAI, OpenAI APIs
4d
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Senior Full Stack Developer
Toronto, Ontario, Canada
$120k-$145k/yr HybridFull Time
Konrad Group
Konrad Group: Provides digital strategy, design, and software development services.
5+ YOE5+ years building production web applications; strong JavaScript skills; experience with TypeScript, Node.js, Next.js; front-end framework experience (React/Angular); knowledge of web architecture and core web principles.
JavaScript, TypeScript, Node.js, Next.js, React, Angular, Gatsby, Remix.js, Wordpress, AEM, Sitefinity, AWS, Google Cloud, Azure, GraphQL, ElasticSearch, Serverless
6d
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Senior Full Stack Developer
Toronto, Ontario, Canada
OnsiteFull Time
Royal Bank of Canada
Royal Bank of CanadaTSX: RY: Provides personal, commercial, and investment banking services worldwide.
Bachelor's in CS or related; strong experience with Java, Spring Boot, JMS, Kafka, MongoDB, MQ, REST, cloud (OpenShift/AWS/Azure); GitHub/GitHub Actions, Jira, Confluence; refactoring legacy systems; strong communication.
Java, Spring Boot, JMS, Kafka, MongoDB, MQ, OpenShift, AWS, Azure, REST, GitHub, GitHub Actions, Jira, Confluence, Angular, Gen AI
1mo
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MTS 2 Full Stack Engineer
Toronto, Ontario, Canada
HybridFull Time
eBay
eBayNASDAQ: EBAY: Global online marketplace for buying and selling diverse products.
10+ YOEBS/BA in CS or related; 10+ years full-stack experience with TypeScript, Node.js, and React; strong backend, API (REST/GraphQL), database, CI/CD, testing, observability skills; mentoring and cross-functional collaboration.
TypeScript, Node.js, React, REST, GraphQL, CI/CD
5d
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Senior Full Stack Software Engineer
Toronto, Ontario, Canada
HybridFull Time
Kraft Heinz
Kraft HeinzNasdaq: KHC: Produces and sells packaged food and beverage products globally.
5+ YOE5+ years software engineering experience; strong with React and TypeScript, Python (FastAPI), SQL; cloud experience (Azure preferred); automated testing, CI/CD, and strong communication skills; English fluency required.
React, TypeScript, Python, FastAPI, JavaScript, SQL, Azure
3w
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Full-Stack Developer (.NET, C#, Angular)
Toronto, Ontario, Canada
$110k-$135k/yr HybridFull Time
PartnerRe
PartnerRe: Global reinsurer providing risk transfer and management solutions.
8+ YOE8+ years C#/.NET experience, 4+ years Angular SPA development, expert T-SQL, experience with Entity Framework Core, containerization and cloud (Azure) familiarity, degree in CS or equivalent.
C#, .NET Core/.NET 8+, T-SQL, Angular (v14+), TypeScript, RxJS, NgRx, Entity Framework Core, Docker, Kubernetes, Azure DevOps, Azure
2w
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Intermediate Java Full Stack Developer
Toronto, Ontario, Canada
$92k-$118k/yr OnsiteFull Time
Capco
Capco: Global consultancy providing business and technology services.
5+ YOE5+ years building enterprise applications with Java and modern frontend technologies; experience with Angular, TypeScript, JavaScript, Python, Node.js, REST APIs, automated testing, and collaborating with clients in Agile environments.
Java, Angular, TypeScript, JavaScript, HTML/CSS, Node.js, JUnit 5, Git, SQL, NoSQL, Python, C, C++, AWS, Azure, Google Cloud, Docker, Kubernetes
1mo
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AI Native Full Stack Developer — Senior Manager
Toronto or Montreal or Vancouver or Calgary or Ottawa
$120k-$248k/yr OnsiteFull Time
Accenture
AccentureNYSE: ACN: Global provider of management consulting and technology services.
8+ YOEBachelor's in CS/Engineering, 8+ years building cloud-native systems, 2+ years with AI platforms (Claude/OpenAI/Vertex AI), hands-on in agentic AI, strong Python or Java skills, client-facing leadership, English required.
Anthropic, Claude, OpenAI, Vertex AI, Python, Java, Kubernetes, Docker, CI/CD
1mo
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Lead Full Stack Developer - Delo (Toronto, ON, CA, M5C 3G7)
Toronto or Montreal
$84k-$175k/yr HybridFull Time
Deloitte
Deloitte: Global provider of audit, consulting, financial, and tax services.
10+ YOE10+ years software engineering experience; strong React/Next.js front-end and Python/FastAPI back-end; production systems, event-driven architectures, PostgreSQL, MongoDB, Elasticsearch, LLM experience, CI/CD, and strong API design skills.
React, Next.js, Python, FastAPI, PostgreSQL, MongoDB, Elasticsearch, SQL, NoSQL, LLM, Cursor, Claude Code, Codex, pgvector, milvus, Docker, Kubernetes, AWS, Azure, GCP, CI/CD
4w
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Full stack L2/L3 production support
Toronto, Ontario, Canada
$90k-$98k/yr OnsiteFull Time, Contract
Tech Mahindra
Tech MahindraNational Stock Exchange of India: TECHM: Global provider of information technology and business process services.
5+ YOE5+ years experience with Java (Spring Boot), React/Angular, CI/CD, DevOps tools (JIRA, Confluence, GitHub), and L2/L3 production support; Bachelor's degree required.
Java, Spring Boot, React, Angular, CI/CD, JIRA, Confluence, GitHub
2mo
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Software Engineer, Full-Stack Applications - Ratings Technology (Toronto, ON, CA)
Toronto, Ontario, Canada
$100k-$150k/yr HybridFull Time
Fitch Group
Fitch Group: Provides global credit ratings and financial market research services.
7+ YOE7+ years of full-stack enterprise software experience; strong backend (Java/Spring Boot, Python) and frontend (React) skills; cloud, DevOps, and data knowledge.
Java, Spring Boot, Maven, Python, FastAPI, Flask, ReactJS, Node.js, AWS, Kubernetes, GitHub Actions, PostgreSQL, Oracle, MongoDB, Kafka, PySpark, Parquet, Avro, Apache Airflow, Streamlit, Bash
1mo
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Senior Software Engineer
Toronto or Alberta or British Columbia or Manitoba or New Brunswick or Newfoundland and Labrador or Nova Scotia or Ontario or Prince Edward Island or Saskatchewan
$90k-$140k/yr RemoteFull Time
Applied Systems
Applied Systems: Provides cloud-based management software for insurance agencies and brokerages.
5+ YOE5+ years full‑stack development experience; proficiency with Microsoft .NET/C#, TypeScript, React, Kubernetes, Microsoft SQL Server, OpenAPI, Apigee, GCP; experience with Datadog, GitLab, Agile, and mentoring engineers.
Microsoft .NET, C#, TypeScript, React, Kubernetes, Microsoft SQL Server, OpenAPI, Apigee, GCP, Datadog, GitLab, Node.js, Jira, Confluence
2mo
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Senior Staff Software Engineer
Toronto or Canada
$140k-$180k/yr RemoteFull Time
Nue
Nue: A unified revenue lifecycle platform for SaaS companies.
12+ YOE12+ years software engineering; Staff level; foundational systems; multi-stack backend; strong architecture and leadership.
AWS, GCP, Azure, Kubernetes, CI/CD, OpenTelemetry, Prometheus, Grafana, Claude Code, Copilot
2w
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Senior Software Engineer II, Cloud Data Ingestion & Transformation
Toronto, Ontario, Canada
$187k-$300k/yr HybridFull Time
Braze
BrazeNASDAQ: BRZE: Platform for personalized customer engagement and cross-channel messaging.
6+ YOE6+ years full-stack development experience, strong backend focus; technical leadership and architectural experience; knowledge of data pipelines, distributed systems, and modern web stacks.
Kafka, Airflow, Sidekiq, SQS, RabbitMQ, Python, Django, React, Ruby on Rails, Snowflake
1mo
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Senior Software Engineer (259561)
Toronto, Ontario, Canada
OnsiteFull Time
Scotiabank
ScotiabankToronto Stock Exchange: BNS: Provides global personal, commercial, and investment banking services.
10+ YOE10+ years full stack development with Java/Spring Boot and React.js, 5–7 years SQL and enterprise web app experience, 5+ years Python, DevOps/CI-CD experience (Bitbucket, Jenkins, Sonar), cloud experience (GCP, Azure), and Agile.
React.js, Java, Spring Boot, Python, JavaScript, TypeScript, SQL, Bitbucket, Jenkins, Sonar, Google Cloud Platform (GCP), Microsoft Azure
1w
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Senior Developer (T & I) (Telework/Hybrid)
Montreal or Toronto or Ottawa
HybridFull Time
CBC/Radio-Canada
CBC/Radio-Canada: Canada's national public broadcaster providing multimedia news and entertainment.
3+ YOE3+ years application development experience, full-stack web development with .NET/C#, Azure, JavaScript/TypeScript; Agile experience and strong communication skills.
Jenkins, GIT, HTML5, CSS3, JavaScript, TypeScript, Bootstrap, AngularJS, .NET, C#, Microsoft Azure Function Apps, Microsoft Azure Data Factory, Microsoft Azure Event Grid, Microsoft Azure Data Storage, OpenAPI, Swagger, MongoDB, Oracle, SQL Server, xUnit, Cypress
1mo
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Software Developer
Tonawanda, New York, United States
$77k-$112k/yr OnsiteFull Time
Linde
LindeNYSE: LIN: Supplies industrial gases and develops gas processing technologies.
7+ YOEBachelor's in CS or related, 7+ years software development, full-stack expertise (frontend SPA, backend Python), system architecture, relational DB design, mentorship, and willingness to travel up to 20%.
Vue.js, Python, FastAPI
1mo
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Staff Software Engineer
Draper or Toronto or Pittsburgh or Cork
$153k-$294k/yr OnsiteFull Time
Proofpoint: Provides cybersecurity solutions for email, cloud, and data protection.
8+ YOE8+ years building production backend or full-stack systems; strong Python, Postgres, API integration with OAuth; experience with distributed/asynchronous systems; leadership in technical execution.
Python, PostgreSQL, SQL, AWS, Docker, React, TypeScript
2w
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Lead Software Engineer AI (Staff Engineer)
Eagan or Frisco or Toronto or Ann Arbor
$127k-$237k/yr HybridFull Time
Thomson Reuters
Thomson ReutersNASDAQ: TRI: Provides professional software, data, and news services globally.
5+ YOEBachelor's degree or equivalent, 5+ years full-stack experience building scalable cloud applications; expertise in C#/.NET, backend architecture, APIs, distributed systems, and AI integration (LLMs, OpenAI/Anthropic); front-end skills (JavaScript/Typescript, Angular/React); AWS, PostgreSQL/SQLServer, CI/CD.
C#, .NET, ASP.NET Core, FastAPI, SQLServer, PostgreSQL, AWS, Vercel, JavaScript, Typescript, HTML, CSS, Angular, React, GitHub Actions, OpenAI, Anthropic, LLMs