Senior API and Integration Engineer

Why you’ll love working here:high-performance, people-focused culture our commitment that equity, diversity, and inclusion are fundamental to our work environment and business success, which helps employees feel valued and empowered to be their authentic selves learning and development initiatives, including workshops, Speaker Series events and access to Linked In Learning, that support employees’ career growth membership in HOOPP’s world class defined benefit pension plan, which can serve as an important part of your retirement security competitive, 100% company-paid extended health and dental benefits for permanent employees, including coverage supporting our team's diversity and mental health (e.g., gender affirmation, fertility and drug treatment, psychological support benefits of $2,500 per year, parental leave top-up, and a health spending account).optional

post-retirement health and dental benefits subsidized at 50% yoga classes, meditation workshops, nutritional consultations, and wellness seminars the opportunity to make a difference and help take care of those who care for us, by providing a financially secure retirement for Ontario healthcare workers

Job Summary The Pension Application Development Team (PAD) is seeking a Senior API Integration Engineer to support the growth of our Digital Insight Services Platform (DISP).Reporting to the Sr. Director, Pension Application Developer, the Senior API and Integration Engineer will lead API integration design and delivery You will build services and shape integration patterns ensuring legacy and core systems remain stable and secure and enabling web and mobile experience teams to move independently through a stable DISP Orchestration API / Backend-for-Frontend layer.

You will act as a technical lead on programs and projects to help establish scalable engineering practices that improve speed, resilience, security, observability, and long-term maintainability. The Senior API and Integration Engineer will partner with Architecture, Product, Front-End Engineering, QA, Security, Infrastructure, and vendor delivery teams in supporting the growth of our DISP program. We value thoughtful innovation, secure engineering, shared ownership, and continuous learning.

What you will do:

Development and Maintenance Own the design and implementation of DISP Orchestration APIs using the Backend-for-Frontend pattern to support new web and mobile experiences.

Build and evolve RESTful APIs and integration services  Core, Azure Functions, and cloud-native Azure services.

Lead complex integrations between modern digital platforms and legacy systems (e.g., Telus Health pension administration).Design integration layers that decouple digital channels from core systems, allowing front-end teams to move independently without over-coupling to backend constraints.

Design secure, token-based API interactions using JWT, OAuth/OIDC patterns, managed identity, Key Vault, private endpoints, and least-privilege access controls.

Implement resilience patterns (e.g., retries, idempotency, asynchronous workflows, messaging, caching).Guide API versioning, contract stability, schema evolution, backward compatibility, and deprecation practices across squads and releases.

Create API designs that align to UX needs, frontend state requirements, error handling, performance expectations, and member experience outcomes rather than simply exposing backend system structures.

Design and maintain integration flows where writes may trigger downstream workflows, audits, status tracking, reconciliation, and eventual consistency across systems.

Implement caching and read-model strategies using Redis, materialized views or projections, or equivalent patterns to improve performance and reduce load on legacy platforms.

Ensure high-quality, secure code through reviews, automated testing, and CI/CD practices.

Lead the resolution of complex production issues across API, identity, and system boundaries

Agile and Collaboration Serve as a senior technical reference point for API integration decisions across our development  program and project delivery activities for significant new Digital Integration Services…