Senior API Developer - REST & Integration Expert
Rubicon Path
A technology firm in Toronto is seeking a Senior Software Developer to design and implement REST APIs in a complex enterprise environment. The ideal candidate has over 5 years of experience in API development and integration, strong skills in platforms like IBM API Connect and a solid understanding of microservices. This role requires excellent problem-solving abilities and effective communication skills. #J-18808-Ljbffr
$86.9 - $104.28 per hour
...RQ11442 - Software Developer - API - Senior Duration: 1 Year (254 Business Days) + 1 Possible Extension Location: 5 days onsite at 222... ...with Node.js and Next.js ~5+ Experience building and testing RESTful APIs ~2-3+ years of Multi-agent (Agentic AI), LLMops, MCP,...SeniorFull time- ...Position: Integration Developer Location: Toronto, ON (Onsite) Job ID#: RQ10573 Duration: 12 Months Role Overview We are seeking a Senior API Software Developer/Integration Developer with 8+ years of experience responsible for creating and consuming...SeniorFull time
- ...The client is picturing a hands-on Guidewire ClaimCenter developer with a strong Java/API integration background, not a configuration analyst or functional... ...screens. The explicit list of protocols and tooling (REST, SOAP, JSON, XML, YAML, Swagger/OpenAPI, Postman) points...SeniorImmediate start2 days per week
- ...growing fast and hiring the talent to match. The Integration Developer plays a critical role in our post-sales team by... ...clients. Apply technical skills to provide expert integration advice on how to best utilize our Open REST APIs. Design and develop customized...SuggestedFull timeImmediate start
$86.9 - $104.28 per hour
...RQ10573 - Software Developer - API - Senior ONSITE - Toronto ( 21 College Street) 11+ months Contract (250 Business Days)+ 6 Months Possible Extension... ...Extensive experience in designing, building, and consuming REST APIs, including API documentation and testing, as well as in-...SeniorFull timeContract work- ...financial institution is seeking skilled Developers to design, build, test, and support... .... Responsibilities Develop, enhance, and maintain reliable enterprise... ..., and technical planning. Develop APIs, services, integrations, and user-facing functionality as...Full time
$118k - $152k per year
...The Role Capco is seeking a Senior Software Engineer with strong... ...C#, .NET, ASP.NET Core, and API development to join our Technology... ...this role, you will design, develop, modernize, and maintain... ...Server. Build, enhance, and integrate secure RESTful APIs, including...SeniorFull timeInternshipImmediate start- ...Role: Senior Ruby on Rails developer - Rest API Location: Toronto ON (Hybrid 4 Days/Week Onsite) Duration: 612 Months (Contract) Job Summary We are looking for a Senior Software Engineer (Ruby on Rails) to join a high-performing engineering team building...SeniorFull timeContract work
- ...RBC is seeking a payments expert for our US Cash Management Technology... ...; performing testing for developed applications. Reviewing, analyzing... ...to succeed? Must have: API Development language and... ..., such as Java/Spring Boot Integration technology and frameworks such...SeniorFull time
- ...Position: Senior ETL Developer Location: Toronto, ON (onsite) Job ID#... ...developing high-quality code, managing data integrations, and supporting enterprise data platforms... .... Experience with C# development, APIs, and application functions....SeniorFull time
- ...Works with QA analysts and software developers to find solutions General Skills... ...(for UI testing) Postman, REST Assured, or SoapUI (for API testing) JMeter or Gatling (for performance... ...(e.g., functional, regression, integration, system, smoke, and exploratory testing...SeniorFull time
$125k - $175k per year
...best and the brightest talents. The Senior AI Software Developer will design, build, and deliver the... ...escalation point for AI applications. Integration, Identity & Security Build... ...code reviews. Qualifications Expert proficiency in Python, including asynchronous...SeniorFull timeWork at office$104.72k - $154.7k per year
...operational excellence. As the Lead Data Integration Specialist, you will lead various... ...organization’s Application Programming Interfaces (API) and effectively communicate said value to... .../Integration Advance experience using REST APIs and continuous monitoring. You...Long term contractFull timeWork at officeLocal areaFlexible hours- ...Description : Designs, develops, tests, deploys, and maintains the accessible, responsive, and user-... ...accessibility, security, and DevOps resources, the Senior Software Developer – Frontend integrates interfaces with APIs, identity services, workflows, notifications,...SeniorFull time
- ...working, tested applications. This includes developing detailed programming specifications,... ...business area stakeholders and subject matter experts Experience with application architecture, front-end & back-end integration, API development Excellent analytical, problem...SeniorFull time
- ...Veriday is seeking an experienced Senior Microsoft Dynamics CRM Developer / Technical Architect to join our client... ...candidate will design, develop, integrate, and enhance Microsoft Dynamics CRM... ...TypeScript, and supported Microsoft APIs. Build and enhance model-driven...SeniorFull timeContract workWork at office3 days per week
- ...Position: Senior .NET Developer Location: Toronto, ON Job ID#: RQ11090 â Duration: 8 Months Role Overview... ...applications using structured methodologies Develop and integrate APIs and support front-end and back-end system architecture Ensure...SeniorFull time
- ...Collaborate closely with software developers, data engineers, DevOps, and... .... Develop and enhance APIs, platform features, and tools... ...Experience building APIs and services (REST) to support data and AI... ...Kubernetes). ~ Experience working in integrated team environments using source...SeniorHourly payPermanent employmentFull timeInternshipWork at office
- ...Engineering Manager, we are looking to add an API Developer to our Agile development team. You will... ...using PHP frameworks (Laravel for REST APIs). This is a hybrid role requiring... .... You are recognized as a subject matter expert and excel at designing innovative solutions...Full timeWork at officeLocal area
- ...Senior Salesforce Developer Toronto, ON (3 days on site/week) Fulltime One of our financial services... ...and execution roadmaps. Data & Integration Leadership Data Integration... ...outside systems, specifically using live APIs for real-time data exchange....SeniorFull time3 days per week
- ...applications. This includes: developing detailed programming... ...stakeholders and subject matter experts Excellent analytical, problem... ...scripts and Oracle Data Integrator Proved business knowledge... ...hands-on experience of RestAPI, RESTful WebServices ~ Solid Understanding...SeniorFull timeManual labor
- ... Position: Senior BI Developer Location: Toronto, ON Job ID#: RQ11635 Duration: 6 Months Role... ...information from diverse business-area stakeholders and subject matter experts. Excellent analytical, problem-solving, and decision-...SeniorFull time
$107.1k - $130.9k per year
...performance, accessibility, and SEO. We're looking for a Senior Web Developer to lead complex web projects, shape technical decisions,... ...platforms Content Platform Development: Build and optimize integrations between the headless CMS and front end, developing scalable...SeniorFull timeInternship- ...applications. This includes: developing detailed programming... ...stakeholders and subject matter experts Excellent analytical,... ...Additional Skills for Oracle Software Developer: Experience in... ...shell scripts and Oracle Data Integrator Proved business knowledge...SeniorFull time
- ...\ · \\\ Google Angular Framework \\ (expert -level experience and ideally using versions... ...Mapping data access tools \ \ · \\\ REST \\ APIs \ \ \ · \\\ C#, JavaScript \ \... ...\ This is an amazing opportunity for a Senior Software Developer (.NET) to deliver a...SeniorFull timeRemote work
- ...Job Overview: Client is hiring a Senior KDB Developer to join a Global Markets Data & Analytics... ...OS tuning. Build ETL pipelines and integrate with Kafka and streaming services. Drive... ...Requirements Required Skills: Expert knowledge of KDB+/q in production...SeniorFull time
$165k - $200k per year
...Senior Full Stack Software Developer Location: Toronto GTA (hybrid) · Type: Full-time · Openings... ...across frontend, backend and operational integrations, and uses modern AI tools daily to... ...React and modern web frameworks ~ REST or GraphQL API development with Node...SeniorFull time$155k - $180k per year
...source of truth, it seamlessly integrates with a robust ecosystem of... ...looking for a Staff Software Developer - Integration to join our Engineering... ...integration technologies: REST, SOAP, Webhooks. Strong... ...Opportunities to learn from industry experts and grow your career...Remote jobFull timeWork at officeHome officeFlexible hoursWeekend work$146k - $200k per year
...being rewritten monthly. Okta's Developer Productivity and AI Enablement... .... We are looking for a Senior Product Manager to own developer... ...into playbooks; lead build, buy, integrate, and standardize decisions,... ...developer AI tools, harnesses, APIs, MCPs, and agent orchestration...SeniorFull timeWork at officeLocal areaWorldwideShift work2 days per week$101.2k - $130.9k per year
...below. Job posting link via Si Systems: Senior Integration Engineer Our Story & Purpose:... ...we want to meet you. You’ll design, develop, and maintain enterprise integrations using... ...Logic Apps, Functions, Service Bus, and API Management. You’ll work closely with...SeniorPermanent employmentFull timeInternshipWork at officeImmediate startFlexible hours
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