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Full Stack Software Developer- Senior- Onshore
Full Stack Software Developer- Senior- OnshoreW3Global • Quebec, Capitale-Nationale, CA
Full Stack Software Developer- Senior- Onshore

Full Stack Software Developer- Senior- Onshore

W3Global • Quebec, Capitale-Nationale, CA
Il y a 4 heures
Type de contrat
  • Temps plein
Description de poste

Full Stack Software Developer - Senior - Onshore

Join to apply for the Full Stack Software Developer - Senior - Onshore role at W3Global .

Hybrid - 3 days a week

Key Outcomes

  • Deliver an Integration Hub / API layer that decouples client apps from PSP specifics and supports REST + webhooks + event‑driven messaging.
  • Enable tokenized payment flows end‑to‑end (authorization, capture, refund, chargeback).
  • Stand up a secure CI / CD pipeline with automated tests / security checks (SAST / DAST), secrets management, and role‑based access.
  • Implement observability (structured logging, metrics, tracing) and performance profiling to meet SLOs.
  • Contribute to the design and execution of migration from legacy DTS tokens to PSP tokens, including retokenization and lifecycle management.

Key Responsibilities

  • Design, develop, and deploy applications using AWS services such as Amazon API Gateway, Lambda, DynamoDB, and S3.
  • Build responsive and dynamic front‑end interfaces using HTML, CSS, JavaScript, TypeScript, and frameworks like React or Angular.
  • Implement iframe integration and web components for modular and reusable UI elements.
  • Develop and maintain backend services, including RESTful API design, webhooks, and integration with third‑party systems.
  • Write clean, maintainable code in TypeScript and Python, and manage version control using GitLab.
  • Collaborate with DevOps teams to ensure smooth CI / CD pipelines and deployment processes.
  • Work with NoSQL (e.g., DynamoDB) and SQL databases for data storage and retrieval.
  • Define API Gateway patterns, versioning, error models, pagination, and idempotency keys.
  • Ensure application security, PCI compliance, scalability, and performance optimization.
  • Collaborate with Architecture, Security, Finance / Treasury, other TS teams, and vendor partners; lead release planning and capacity forecasting.
  • Prepare and maintain technical specs, threat models, runbooks, and operational dashboards.

    • Required Skills & Experience

  • Proven experience building applications on the cloud : AWS (API Gateway, Lambda, DynamoDB, S3, IAM), serverless and container workloads.
  • Strong front‑end development skills : React or Angular with TypeScript, HTML / CSS for admin / merchant portals.
  • Backend and integration development experience with REST APIs, webhooks, and integration patterns.
  • Backend : proficiency in TypeScript / Node.js and / or Python / Java / Kotlin / Go; RESTful design; clean architecture; DDD.
  • Integrations : REST, webhooks, message queues; webhook signature verification; idempotency; error handling.
  • Familiarity with GitLab and DevOps practices.
  • Experience with NoSQL and SQL databases; schema design; partitioning; performance tuning.
  • Deep knowledge of OWASP ASVS / Top 10; encryption in transit / at rest; mTLS / OAuth2; API key rotation; short‑lived tokens.
  • Experience with secrets management (vaults), IAM / RBAC, audit logging, data privacy, and secure SDLC (TDD, code reviews, SAST / DAST).
  • Required experience with monitoring and observability, including structured logging, metric collection, tracing (e.g., OpenTelemetry), performance profiling, and debugging.
  • Strong problem‑solving skills and ability to work in an agile environment.

    • Nice‑to‑Have

  • Hands‑on PCI‑DSS experience; designing scopes that keep ICN out of PCI.
  • Knowledge of AWS security best practices.
  • Experience with microservices architecture.
  • Familiarity with containerization (Docker) and orchestration.
  • Experience with payment gateways / processors (e.g. Moneris, CT Payments, etc.) and chargeback flows.

    • To Be Successful In This Role You Will Need

  • Analytical skills.
  • Ability to work in fast‑paced environments.
  • Communication is essential to be integrated in the team.
  • Creativity is always a plus.
  • Proven past experience on real prod‑level projects.

    • Qualifications

  • 8+ years in software development with a track record of building production‑grade distributed systems.
  • Demonstrated leadership in release management, capacity planning, and cross‑vendor / customer collaboration.
  • Agile, Waterfall, and / or Hybrid delivery experience; mentoring engineers; driving knowledge sharing.

    • Seniority level

    Mid‑Senior level

    Employment type

    Contract

    Job function

    Engineering and Information Technology

    Industries

    Staffing and Recruiting

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