Senior Backend Developer - Java, Cloud, DevOps

Job Description

Job Title

Senior Full Stack Engineer – Java, Cloud & DevOps

Location

Toronto

Experience

10+ years of professional software development experience

Key Responsibilities

Architecture & Delivery

Design and implement robust REST and GraphQL services using Java (Java 17) with Spring Boot (or Micronaut / Quarkus)

Develop responsive front-end applications using React (preferred), Angular, or Vue with TypeScript

Own end-to-end feature delivery across backend APIs, databases, frontend UI, and system integrations

Define API contracts, service boundaries, and documentation using OpenAPI / Swagger

Ensure high performance, scalability, and observability through profiling, tracing, and metrics

Cloud, DevOps & Reliability

Build and maintain CI / CD pipelines using GitHub Actions, Jenkins, or GitLab CI

Implement Infrastructure as Code (IaC) using Terraform, CloudFormation, or CDK

Containerize and deploy applications using Docker and Kubernetes (EKS / AKS / GKE)

Set up monitoring and alerting with Prometheus, Grafana, OpenTelemetry, CloudWatch, New Relic, or Datadog

Lead incident response and root-cause analysis to improve system reliability

Apply caching, rate limiting, and resilience patterns such as circuit breakers, retries / backoff, and bulkheads

Security & Compliance

Enforce secure coding practices aligned with OWASP Top 10

Implement API authentication and authorization using OAuth2, OIDC, and JWT

Manage secrets and encryption using TLS, KMS , and encryption at rest and in transit

Support audit and compliance requirements including SOC 2, ISO, and PCI (as applicable)

Quality & Technical Leadership

Establish coding standards , static analysis, and best practices using PMD, Checkstyle, FindBugs, EMMA, Clover

Define and enforce testing strategies (unit, integration, end-to-end)

Conduct code reviews , mentor developers, and lead design and architecture reviews

Contribute to technical roadmaps and continuous improvement initiatives

Collaborate cross-functionally with Product, QA, SRE, and Data teams to deliver business outcomes

Required Qualifications

8–12 years of professional software development experience

5+ years building backend services in Java , with Spring Boot strongly preferred

Strong front-end experience with React (preferred) or Angular / Vue

Proficiency in JavaScript / TypeScript and modern build tools ( Webpack, Vite, npm, yarn, pnpm )

Experience with relational and NoSQL databases (PostgreSQL, MySQL, Oracle, MongoDB, Cassandra) and strong SQL skills

Hands-on experience with CI / CD , Docker , and Kubernetes

Solid testing experience :

Backend : JUnit, TestNG, Mockito

Frontend : Jest, React Testing Library, Cypress, Playwright

Strong understanding of distributed systems and integration patterns

Excellent problem-solving, communication, documentation, and stakeholder collaboration skills

Nice-to-Have Skills

Event streaming and messaging ( Kafka, Kinesis, RabbitMQ )

Asynchronous processing and saga / outbox patterns

Cloud platforms : AWS, Azure, or GCP , including managed services

Performance tuning and scalability :

Load testing (JMeter, k6)

JVM tuning (GC, thread pools)

Frontend performance ( Lighthouse, Web Vitals )

Experience with micro frontends , design systems, and accessibility (WCAG)

Domain experience in fintech, payments, or regulated environments

Additional backend languages : Kotlin, Go, Python