Intermediate Oracle PL/ SQL Consultant

S.i. Systems; Vancouver; On-site; CAD 95,000 - 130,000; Full time

Benefits offered by this job

Comprehensive health insurance

Paid time off

Downtown Vancouver office

Job summary

S.i. Systems is seeking a Backend Software Developer to design, build, and scale modern web applications in Vancouver. You’ll craft robust backend services with TypeScript and NestJS, expose RESTful and GraphQL APIs, and model data with PostgreSQL.

You’ll implement microservices using CQRS and Clean Architecture, contribute to micro‑frontend work where relevant, and thrive in an Agile team that values clean, well‑documented code and strong collaboration.

Qualifications

• Strong experience with TypeScript.
• Hands-on experience with NestJS.
• Solid understanding of RESTful APIs and GraphQL.
• Experience working with PostgreSQL.
• Familiarity with CQRS, Clean Architecture, and Domain‑Driven Design (DDD).
• Experience designing and maintaining microservices.
• Proficiency with Git.
• Experience working in Agile/Scrum teams.
• Familiarity with Jira or similar project‑management tools.
• Strong problem‑solving and debugging skills.
• Ability to write clean, readable, well‑documented code.

Responsibilities

• Design, develop, and maintain scalable full‑stack applications.
• Build and maintain backend services using TypeScript and NestJS.
• Design and integrate RESTful APIs and GraphQL APIs.
• Work with PostgreSQL, designing efficient and scalable data models.
• Implement and maintain microservices using CQRS and Clean Architecture.
• Contribute to micro‑frontend architectures where applicable.
• Write clean, maintainable, testable code.
• Participate in code reviews, architectural discussions, and technical decision‑making.
• Collaborate with cross‑functional teams in Agile/Scrum environments.
• Track and manage work using Jira.
• Use Git for version control and team collaboration.

Skills

TypeScript

NestJS

RESTful APIs

GraphQL

PostgreSQL

CQRS

Clean Architecture

DDD

Microservices

Git

Agile/Scrum

Jira

Code reviews

Team collaboration

Tools

Docker

CI/CD

GitHub Actions

AWS

GCP

Azure

Job description

We’re looking for a Backend Software Developer to help design, build, and scale modern web applications at the intersection of energy and compute. You’ll be building robust backend services while collaborating closely with product, infrastructure, and operations teams.

This role is ideal for someone who is AI‑savvy and enjoys clean architecture, modern tooling, and solving real‑world problems in production systems.

What You’ll Do

• Design, develop, and maintain scalable full‑stack applications
• Build and maintain backend services using TypeScript and NestJS
• Design and integrate RESTful APIs and GraphQL APIs
• Work with PostgreSQL, designing efficient and scalable data models
• Implement and maintain microservices using CQRS and Clean Architecture
• Contribute to micro‑frontend architectures where applicable
• Write clean, maintainable, testable code
• Participate in code reviews, architectural discussions, and technical decision‑making
• Collaborate with cross‑functional teams in Agile/Scrum environments
• Track and manage work using Jira
• Use Git for version control and team collaboration

Requirements

• Strong experience with TypeScript
• Hands‑on experience with NestJS
• Solid understanding of RESTful APIs and GraphQL
• Experience working with PostgreSQL
• Familiarity with CQRS, Clean Architecture, and Domain‑Driven Design (DDD)
• Experience designing and maintaining microservices
• Proficiency with Git
• Experience working in Agile/Scrum teams
• Familiarity with Jira or similar project‑management tools
• Strong problem‑solving and debugging skills
• Ability to write clean, readable, well‑documented code

Nice to Have (Strong Plus)

• Experience with Docker and containerised applications
• Familiarity with CI/CD pipelines (GitHub Actions, GitLab CI, etc.)
• Cloud experience (AWS, GCP, or Azure)
• Experience with authentication & authorization (JWT, OAuth2, OpenID Connect)
• Knowledge of testing frameworks (Jest, React Testing Library, Cypress)
• Experience with logging, monitoring, and observability tools
• Familiarity with message brokers (Kafka, RabbitMQ, SQS)
• Basic DevOps or infrastructure knowledge

Be a part of creating an innovative product that makes a real difference.

Comprehensive health insurance, including medical, vision, and dental coverage.

Paid time off to support a balanced work‑life experience.

Work in a conveniently located office in downtown Vancouver.

Grow your career and take on more responsibilities within the company.

Discover how energy, artificial intelligence, and computing intersect to tackle significant challenges.

Join a team that prioritises clean coding practices, strong principles, and technical excellence.