Overview We are seeking a Senior Integration Developer to design, develop, and support secure, scalable APIs and system integrations within a financial-services environment. The successful candidate will bring strong hands-on experience with C#, .
NET, REST APIs, and Azure integration technologies, along with the ability to analyze system contracts, define data mappings, and implement transformations across diverse business and technical systems. This role requires a collaborative, solutions-oriented developer who can work independently, contribute to API design discussions, and help establish integration standards and best practices. Role and Responsibilities API Development & Systems Integration
- Design, develop, test, and maintain RESTful APIs using C# and .
NET technologies.
- Build and support integrations connecting digital channels, shared services, and backend banking platforms.
- Configure and leverage Azure API Management (APIM), including API policies, routing, authentication, and versioning.
- Implement secure API access using OAuth 2.0, OpenID Connect (OIDC), and JWT-based authentication.
- Troubleshoot integration issues, optimize performance, and ensure reliable communication between systems. Data Mapping & Transformation
- Analyze source and target system contracts to identify data structures, dependencies, and integration requirements.
- Define and document field-level mappings, transformation logic, and validation rules.
- Develop data transformations across different business and technical models.
- Collaborate with business analysts and data modelers to ensure accurate interpretation of business requirements and data relationships. Solution Design & Technical Collaboration




- Define and maintain API contracts, technical specifications, and integration documentation.
- Participate in API design reviews, architecture discussions, and technical solution assessments.
- Collaborate with development, architecture, QA, and business teams to deliver reliable integration solutions.
- Contribute to reusable integration patterns, development standards, and engineering best practices.
- Identify opportunities to improve API consistency, maintainability, and integration efficiency. Preferred Skills Core Technical Proficiencies
- Strong hands-on development experience with C#, .
NET, and RESTful APIs.
- Proficiency with JSON, REST principles, API contracts, and system integration patterns.
- Experience with Azure API Management (APIM) or comparable API gateway technologies.
- Demonstrated ability to analyze data structures, define mappings, and implement transformation and validation logic.
- Working knowledge of API security, including OAuth 2.0, OIDC, and JWT.
- Experience debugging, testing, and supporting integrations across multiple applications. Critical Mindset Skills
- Strong analytical thinking with the ability to understand complex system interactions and data relationships.
- Ability to translate business requirements into practical, maintainable integration solutions.




- Sound technical judgment when evaluating API designs, integration approaches, and system dependencies. Essential Soft Skills
- Robust written and verbal communication skills.
- Ability to collaborate effectively with business analysts, data modelers, architects, and developers.
- Comfortable explaining technical concepts and documenting design decisions. Preferred Skills
- Experience within banking, financial services, or other regulated environments.
- Familiarity with canonical data models and enterprise data integration patterns.
- Exposure to event-driven architectures and asynchronous integration.
- Experience with Azure cloud services and cloud-native application development.
- Knowledge of BIAN frameworks and domain-driven service design. Qualification and Experience
- Bachelor's degree or diploma in Computer Science, Software Engineering, Information Technology, or equivalent practical experience.
- 7+ years of professional software development experience, preferably including at least 3 years focused on API development and systems integration.
- Demonstrated experience delivering production-grade APIs and integrations across multiple enterprise systems.
- Experience participating in technical design discussions and collaborating with cross-functional delivery teams.
- Financial-services experience is considered an asset but is not mandatory. Pay: $95,000.00-$110,000.00 per year Application question(s):
- Are you willing to undergo identity verification and background check?

Location:
- Greater Toronto Area, ON (preferred) Work

Location:
Remote

📌 Sr. Integration Developer (Greater Toronto Area)
🏢 LANK Consulting
📍 Greater Toronto Area