Full Stack Developer Java

Apptoza Inc.; Toronto; Hybrid; CAD 110,000 - 150,000; Full time

Job summary

Apptoza Inc. in Toronto, ON seeks a Senior Full Stack Developer (Angular/Java) to join a hybrid team building customer-facing web apps and scalable backend services. You will design, implement, and operate high-scale APIs and front-end applications using Angular and Java, contributing across the software lifecycle.

The role emphasizes REST/GraphQL APIs, microservices, Kafka integrations, and secure coding practices, with a focus on CI/CD, testing, and collaboration in an Agile environment.

Qualifications

• 8+ years professional software development experience building web applications and backend services.
• Hands-on experience with Node.js and developing full-stack solutions (MEAN or similar stacks).
• Proven experience designing and developing RESTful APIs and GraphQL APIs.
• Experience with message-based systems (Kafka) and in-memory stores (Redis).
• Solid knowledge of relational databases (Postgres/SQL) and schema design.
• Experience containerizing and running apps in cloud platforms and PaaS (Docker, OpenShift, Kubernetes preferred).
• Familiarity with API specifications and tooling (OpenAPI/Swagger); experience troubleshooting and testing APIs.
• Practical experience with authentication and authorization protocols (OAuth2.0, JWT, OIDC) and certificate management.
• Demonstrated experience with CI/CD pipelines, automated testing and release management.
• Hands-on experience using AI models or integrating ML/AI capabilities into applications.

Responsibilities

• Build and maintain client-facing Angular applications and backend services across the full development lifecycle.
• Design and implement RESTful and GraphQL APIs, microservices, and integrations with messaging platforms such as Kafka.
• Write high quality, tested code with automated unit, integration and end-to-end tests; champion test automation and CI/CD.
• Collaborate within an Agile product team to deliver customer-focused solutions.
• Automate development pipelines and operational runbooks to reduce time-to-market and improve reliability.
• Ensure performance, scalability and resiliency of services with caching, load balancing and fault tolerance.
• Apply security best practices (JWT, OAuth2/OIDC, TLS/SSL) and secure coding standards.
• Stay current with new technologies and propose pragmatic adoption strategies.
• Communicate technical decisions clearly to both technical and non-technical stakeholders.

Skills

Angular

Java

Spring Boot

REST APIs

GraphQL

Kafka

SQL

OpenShift

JWT/OIDC

DevOps

AI/ML models

Tools

Docker

Kubernetes

OpenShift

Job description

Senior Full Stack Developer Java / Angular - Angular, Java, Spring boot, RestApi, Kafka, SQL, Docket, OpenShift, JWT, OIDC, Devops, AI & ML Models

Toronto, ON - Hybrid (4 Days WFO)

6-12 month

We’re seeking a Senior Full Stack Developer to join a high-performing engineering team building modern, customer-facing web applications and resilient backend services. You will work with all stakeholders to design best-in-class technology solutions. You’ll design, implement, and operate high-scale APIs and front-end applications using Angular and Java, helping shape the future of banking technology.

What You’ll Do

• Build and maintain client-facing Angular applications and backend services (Java Spring Boot, Node.js) across the full development lifecycle.


• Design and implement RESTful and GraphQL APIs, microservices, and integrations with messaging platforms such as Kafka.


• Write high quality, tested code with automated unit, integration and end-to-end tests; champion test automation and CI/CD.


• Collaborate within an Agile product team (product owners, UX, QA, engineers) to deliver customer-focused solutions.


• Automate development pipelines and operational runbooks to reduce time-to-market and improve reliability.


• Ensure performance, scalability and resiliency of services (caching with Redis, load balancing, service discovery, fault tolerance).


• Apply security best practices (JWT, OAuth2/OIDC, TLS/SSL) and adhere to secure coding standards.


• Stay current with new technologies and propose pragmatic adoption strategies to solve business problems.


• Communicate technical decisions clearly to both technical and non-technical stakeholders.

Must-Have Qualifications

• 8+ years professional software development experience building web applications and backend services.


• Hands-on experience with Node.js and developing full-stack solutions (MEAN or similar stacks).


• Proven experience designing and developing RESTful APIs and GraphQL APIs.


• Experience with message-based systems (Kafka) and in-memory stores (Redis).


• Solid knowledge of relational databases (Postgres/SQL) and schema design.


• Experience containerizing and running apps in cloud platforms and PaaS (Docker, OpenShift, Kubernetes preferred).


• Familiarity with API specifications and tooling (OpenAPI/Swagger); experience troubleshooting and testing APIs.


• Practical experience with authentication and authorization protocols (OAuth2.0, JWT, OIDC) and certificate management.


• Demonstrated experience with CI/CD pipelines, automated testing and release management.


• Hands-on experience using AI models or integrating ML/AI capabilities into applications.


• Strong communication skills and experience working in Agile teams.

Nice-to-Have

• End-to-end UI automation testing (e.g., Cypress, Selenium, Playwright).


• Experience with reactive, event-driven, or message-oriented architectures.


• UX sensibility and experience collaborating closely with design teams.


• Familiarity with SaaS monitoring and analytics tools (Dynatrace, Google Analytics, Firebase, LaunchDarkly, WalkMe).

Thanks & regards,