We are seeking a highly experienced Senior Software Developer to design, develop, and maintain large-scale enterprise applications. The role involves translating technical specifications into robust solutions, working across the full Software Development Life Cycle (SDLC), and supporting complex Oracle-based systems and modern web architectures.

Key Responsibilities Translate technical system specifications into scalable, high-quality applications

Develop detailed programming specifications and write efficient, maintainable code

Perform unit testing, debugging, and application support

Troubleshoot and resolve technical issues during development and post-deployment

Collaborate with cross-functional teams throughout SDLC

Design, develop, test, and document enterprise applications

Participate in design walkthroughs and technical discussions

Support implementation, migration, and system enhancements

Provide post-implementation support and documentation

Core Requirements (Must Have)10+ years of experience in designing and developing large-scale web applications

10+ years of hands‑on experience with Java + Oracle/SQL databases

5+ years experience with REST APIs / RESTful Web Services

Strong experience in Microservices Architecture

Expertise in Object‑Oriented Programming, Design Patterns, Clean Code, Refactoring

Robust understanding of Agile methodologies

Experience with Azure DevOps

Technical Skills Security protocols: JWT, OAuth2.0, SSL Certificates

Database expertise: Relational & hierarchical DBs, SQL tuning, partitioning

Experience with query languages & information retrieval tools





Knowledge of communication protocols & middleware/gateways

Experience with Internet‑ready applications & RAD methodologies

Role Overview We are seeking a highly experienced Senior Software Developer to design, develop, and maintain large-scale enterprise applications. The role involves translating technical specifications into robust solutions, working across the full Software Development Life Cycle (SDLC), and supporting complex Oracle-based systems and modern web architectures.

Key Responsibilities Translate technical system specifications into scalable, high-quality applications

Develop detailed programming specifications and write efficient, maintainable code

Perform unit testing, debugging, and application support

Troubleshoot and resolve technical issues during development and post-deployment

Collaborate with cross-functional teams throughout SDLC

Design, develop, test, and document enterprise applications

Participate in design walkthroughs and technical discussions

Support implementation, migration, and system enhancements

Provide post-implementation support and documentation

Core Requirements (Must Have)10+ years of experience in designing and developing large-scale web applications





10+ years of hands‑on experience with Java + Oracle/SQL databases

5+ years experience with REST APIs / RESTful Web Services

Strong experience in Microservices Architecture

Expertise in Object‑Oriented Programming, Design Patterns, Clean Code, Refactoring

Strong understanding of Agile methodologies

Experience with Azure DevOps

Technical Skills Security protocols: JWT, OAuth2.0, SSL Certificates

Database expertise: Relational & hierarchical DBs, SQL tuning, partitioning

Experience with query languages & information retrieval tools

Knowledge of communication protocols & middleware/gateways

Experience with Internet‑ready applications & RAD methodologies

Requirements Oracle‑Specific Expertise (Highly Preferred) Oracle E‑Business Suite (EBS) modules:

GL, AR, AP, Collections, Inventory

Strong programming skills in

PL/SQL, SQL, XML, Unix Shell Scripting, Oracle Data Integrator

Experience with ETL, Data Warehousing, OBIEE

Knowledge of Oracle ADF & Java integration

Experience conducting impact assessments on Oracle customizations.

Soft Skills Strong verbal and written communication skills

Excellent analytical and problem‑solving abilities

Ability to work in fast‑paced, deadline‑driven environments

Strong collaboration and stakeholder management skills

Proven ability to work effectively within large teams

Nice to Have Experience working with Ontario Public Service (OPS) or public sector

Knowledge of AODA (Accessibility for Ontarians with Disabilities Act)

Experience with design walkthroughs & documentation

📌 Software Developer - Senior (Toronto)
🏢 Joblinxsapp
📍 Toronto