Posted 3 months ago
RQ11442 - Software Developer - API - Senior
@ Source Code
Toronto, Ontario
Overview
Source Code is hiring a senior software developer for a 1-year contract (with a possible extension) to build and test REST API platforms and AI-enabled applications. The role is on-site five days a week in Toronto or Peterborough, Ontario, paying $86.90 to $104.28 per hour incorporated or $69.52 to $83.42 per hour as a T4 employee.
Pay:
$69.52–$104.28 an hour
Responsibilities:
- Développer et tester des plateformes d'API REST
- Convertir des services web entre SOAP et REST
- Résoudre les problèmes techniques des logiciels
- Collaborer avec les TI tout au long du cycle de développement
Requirements summary:
- 5+ ans avec React, TypeScript, Node.js et Next.js
- 5+ ans de tests d'API RESTful
- 2-3+ ans avec les agents IA, LangChain, RAG et Python
- Expérience avec Azure, Airflow et PySpark
Tools & skills
Source and dates
Source type not verified · manatal
- Employer posting date
- 2026-08-19
- First seen by our source
- 2026-10-12
- Source record updated
- 2026-10-15
These dates describe the source record, not a live verification that the employer is still hiring. Check the original posting.
Job details
| Seniority | Senior |
| Department | Software development |
| Experience | 5+ years |
| Hours per week | 36.25 |
| Schedule | day |
| Travel | air: none · ground: none |
| Work setting | Office |
| Position | Mostly sitting |
| Physical demands | physical low · computer high |
| Languages | English |
Summary and details written by AI from the posting; the employer’s posting is the authority.
Source Code
| Field | Value |
|---|---|
| Open jobs on Jobsy | 655 |
RQ11442 - Software Developer - API - Senior
Duration: 1 Year (254 Business Days) + 1 Possible Extension
Location: 5 days onsite at 222 Jarvis St Toronto OR 300 Water St, Peterborough, ON
Must Have:
- 5+ Experience with React framework and typescript
- 5+ Experience with Node.js and Next.js
- 5+ Experience building and testing RESTful APIs
- 2-3+ years of Multi-agent (Agentic AI), LLMops, MCP, langchain, langGraph, RAG, Qdrant, Python
- Experience with ML models - XGboost, Tensorflow
- Experience with Airflow, PySpark
- 5+ Hands on experience with Progressive Web Apps
- Experience and expert knowledge in HTML, JavaScript, CSS and CSS Frameworks
- Experience with cloud platforms such as Azure
Nice to have:
- Hands on experience developing production level AI agents, frameworks and AI supported systems using various models, tools and architectures (e.g. LLMs, ML, Computervision, etc.)
- Hands on experience designing and implementing MLOps tools and processes in enterprise environments
- Prior OPS exp or public sector exp.
Responsibilities
- Required to translate technical systems specifications into working, tested This includes:
- developing detailed programming specifications
- writing and/or generating code
- compiling data-driven programs, maintaining, and conducting unit
- Analyzes, designs, develops, codes and implements programs in one or more programming languages, for Web and Rich Internet Applications
- Supports applications with an understanding of system integration, test planning, scripting, and troubleshooting
- Designs and develops REST API platform (e.g., with using Apigee/APIM)
- Converts web services from SOAP to REST or vice-versa
- Resolves and troubleshoots technical problems which arise during the use and operation of software packages, including technical assistance in implementation, conversion and migration.
General Skills
- Experience in programming and analysis; specialized software package support at the specified experience level
- Ability to collaborate with IT Professionals throughout the Software Development Life Cycle
- Experience in structured methodologies for the development, design, implementation and maintenance of applications
- Experience in design, code, test, debug and document applications
- Experience in the use of object and/or third generation language development tools
- Experience in one or more programming languages
- Experience in application design, latest design patters, deployment and troubleshooting
- Experience with relational and hierarchical database technologies
- Experience in the use of information retrieval packages using query languages
- Experience with one or more communications protocols
- Experience in structured methodologies for the design, development, implementation and maintenance of applications
- Experience eliciting and documenting information from diverse business area stakeholders and subject matter experts
- Excellent analytical, problem-solving and decision-making skills; verbal and written communication skills; interpersonal and negotiation skills
- A team player with a track record for meeting deadlines
API Skills
- Experience with Web Technologies (DHTML, AJAX, etc.)
- Experience with Security frameworks (e.g., JWT, OATH2)
- Experience in API layer like security, custom analytics, throttling, caching, logging, monetization, request and response modifications etc. using Apigee
- Experience in creating REST API documentation using Swagger and YAML or similar tools desirable
- Experience with Integration frameworks (e.g., Mule, Camel) desirable
Desirable Skills
- Knowledge and experience with programming Internet-ready applications
- Knowledge and experience in rapid application development (RAD) methodologies
- Knowledge and understanding of Information Management principles, concepts, policies and practices
- Experience with middleware and gateways
- Experience reviewing, analyzing, and modifying product installation scripts including encoding, testing, debugging
- Ability to provide post-implementation support and resolve any post-implementation technical issues
- Experience conducting design walkthrough sessions with project team
- Knowledge and understanding of Accessibility for Ontarians with Disability Act (AODA) and related regulations and standards
- Ability to provide user and system documentation as required
AI Disclaimer: Source Code may use artificial intelligence (AI) tools to assist in certain aspects of its recruiting and business operations.
Note: The higher end of the range is intended for absolutely exceptional candidates who meet all must-have requirements and most or all nice-to-have qualifications. The client will evaluate candidates based on both rate expectations and overall skill set when shortlisting.
INCORPORATED RATE RANGE (7.25 billable hours per day)
- $86.90/hr - $104.28/hr Inc.
T4 RATE RANGE (7.25 billable hours per day)
- $69.52/hr - $83.42/hr T4
Journal
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