Jobs in Ontario

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Added 6 mins ago
IG
Solutions Architect
Insight Global
Toronto, ON
- $75 to $85 CAD / hour
- Contract
Added 6 mins ago
CG
General Help, Part Time
Compass Group Canada
Toronto, ON
- Part-time
Added 6 mins ago
MG
Registered Practical Nurse (Nursing Resource Team)
Michael Garron Hospital
Toronto, ON
- Part-time
Added 6 mins ago
NF
Cashier Part Time Day
No Frills
Toronto, ON
- Part-time
Added 6 mins ago
MC
Technical Consultant III (35732)
Myticas Consulting
Toronto, ON
- Full-time
Added 6 mins ago
MC
IBM Technology Developer (35554)
Myticas Consulting
Toronto, ON
- Contract
Added 6 mins ago
MC
SAP OTC Functional SME (36083)
Myticas Consulting
Toronto, ON
- Contract
Added 6 mins ago
MC
SAP OTC Service Delivery Manager – Projects & Enhancements (36082)
Myticas Consulting
Toronto, ON
- Contract
Added 6 mins ago
MC
Solutions Architect – AWS Node.js Digital Banking (35654)
Myticas Consulting
Toronto, ON
- Contract
Added 6 mins ago
LC
Pharmacy Assistant, Hourly Part Time Day
Loblaw Companies Limited
Toronto, ON
- Part-time
Added 6 mins ago
MC
IBM ISAM Developer Administrator (35813)
Myticas Consulting
Toronto, ON
- Contract
Added 6 mins ago
MC
Change Management Consultant (36142)
Myticas Consulting
Toronto, ON
- Contract
Added 6 mins ago
SJ
Health Care Attendant 2E Medicine
St. Joseph's Health Centre, Toronto
Toronto, ON
- Temporary
Added 6 mins ago
TS
TDS Operations Analyst III
TD Securities
Toronto, ON
- Full-time
Added 6 mins ago
TS
TDS Operations Analyst II
TD Securities
Toronto, ON
- Full-time
Added 6 mins ago
MC
Senior Manager, Data Governance (36122)
Myticas Consulting
Toronto, ON
- Full-time
Added 6 mins ago
A
Detailer - ACX Mascarin
AutoCanada
Thunder Bay, ON
- $20,000 to $55,000 CAD / year
- Other
Added 6 mins ago
S
Coating/Painting & Welding Inspector
SGS
Toronto, ON
- $50 to $55 CAD / hour
- Contract
Added 6 mins ago
SM
Admin Assistant CM Concurrent Disorders ACT Team
St. Michael's Hospital
Toronto, ON
- Temporary
Added 6 mins ago
SJ
Dietetic Technician Nutrition Services - Diet Office
St. Joseph's Health Centre, Toronto
Toronto, ON
- Temporary
Added 6 mins ago
SM
Peer Support Specialist Concurrent Disorders ACT Team
St. Michael's Hospital
Toronto, ON
- Temporary
Added 6 mins ago
H
Marketing Automation Expert
HokuApps
ON
- Full-time
Added 6 mins ago
MC
Housekeeping (Picton)
Mimak Care Corporation
ON
- Part-time
Added 6 mins ago
T
Fraud Detection Analyst
Tangerine
Toronto, ON
- Full-time
Added 6 mins ago
S
Coating/Painting & Welding Inspector
SGS
Toronto, ON
- $50 to $55 CAD / hour
- Contract

Teckhorizon Inc

Senior API Developer

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 29, 2026
Experience: 10+ years of experience designing and developing large-scale enterprise web applications.
Posting language: English
Posted: Oct 30, 2026

Original job description

The client is seeking an experienced Senior Software Developer API to design, develop, implement, and maintain enterprise-level APIs, web applications, and system integrations. The ideal candidate will have extensive experience in Java development, RESTful APIs, enterprise integration platforms, API security, and relational databases, with the ability to deliver scalable, secure, and high-performing solutions in complex enterprise environments. The successful candidate will collaborate with cross-functional teams to develop technical specifications, implement integrations, troubleshoot application issues, and support the full software development lifecycle.

Key Responsibilities

Design, develop, implement, and maintain RESTful APIs and enterprise integration solutions.
Translate technical system specifications into functional, tested applications.
Develop programming specifications, write code, and conduct unit testing.
Design and implement APIs using enterprise API management platforms such as IBM API Connect, MuleSoft, Apigee, and Azure API Management.
Integrate APIs with enterprise applications, databases, CRM systems, ERP platforms, and case management solutions.
Convert web services between SOAP and REST architectures when required.
Develop and maintain API documentation using OpenAPI (Swagger), YAML, and related standards.
Implement API authentication and authorization mechanisms using OAuth 2.0, JWT, API keys, and TLS.
Configure API gateway policies, including rate limiting, throttling, caching, logging, and request/response transformation.

Must-Have Skills

10+ years of experience designing and developing large-scale enterprise web applications.
10+ years of hands-on Java development with Oracle or SQL databases.
5+ years of REST API and RESTful Web Services development.
Strong experience with API security: OAuth 2.0, JWT, SSL/TLS certificates, and API gateways.
Hands-on experience with enterprise API integration and management platforms such as IBM API Connect, IBM ACE, MuleSoft, or Azure APIM.
Strong understanding of microservices, RESTful architecture, and enterprise integration patterns.
Solid experience with Agile methodologies and SDLC.

Nice-to-Have Skills

Experience integrating with SharePoint, Microsoft Dynamics CRM, Siebel, or Curam.
Knowledge of Apigee, Swagger/OpenAPI, and YAML.
Experience with CI/CD pipelines, DevOps, and cloud platforms.
Familiarity with Docker and Kubernetes.
Experience with event-driven architecture, messaging queues, and middleware/ESB.
Previous experience with Ontario Public Service (OPS) projects.
Knowledge of AODA accessibility and OPS cybersecurity standards.

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More about this job

Responsibilities

Design, develop, test, and maintain enterprise REST APIs, web applications, and integrations with business applications, databases, CRM, ERP, and case management systems. Implement API security and gateway policies, maintain API documentation, troubleshoot issues, and contribute across the software development lifecycle.

Requirements

Requires 10+ years of enterprise web application and Java development, including Oracle or SQL databases, and at least five years of REST API development. Candidates should have strong API security and enterprise API management experience, knowledge of microservices and integration patterns, and experience with Agile and the SDLC.

Skills

Java
RESTful APIs
Enterprise Integration
API Security
Oracle
SQL
OAuth 2.0
JWT
SSL/TLS
API Gateways
IBM API Connect
IBM ACE
MuleSoft
Azure API Management
Microservices
Agile

Visa sponsorship

Not detected in the job text

Keywords

Java
RESTful APIs
RESTful Web Services
Enterprise Web Applications
Enterprise Integration
IBM API Connect
IBM ACE
MuleSoft
Apigee
Azure API Management
Oracle
SQL Databases
OAuth 2.0
JWT
SSL/TLS
API Gateways
Microservices
SOAP
OpenAPI
Swagger
YAML
API Documentation
CI/CD
DevOps
Cloud Platforms
Docker
Kubernetes
Event-Driven Architecture
Agile

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