Talent.com
United States Digital Space LLC
CDT – 1 Software Developer API (Snr) – 250 + 130 DaysUnited States Digital Space LLC • Toronto, ON, Canada
CDT – 1 Software Developer API (Snr) – 250 + 130 Days

CDT – 1 Software Developer API (Snr) – 250 + 130 Days

United States Digital Space LLC • Toronto, ON, Canada
7 days ago
Job type
  • Full-time
Job description

DescriptionA Note on Assignment Type:

This position is currently listed as “Onsite”, working 7.25 hours per calendar day, sometime between 8:00 AM and 5:00 PM (excluding breaks) Monday to Friday inclusive, unless otherwise identified.

Scope

  • A senior API Software Developer with 8+ years of experience will be responsible for creating and using APIs to translate functional specifications into working and tested applications. This includes developing detailed programming specifications, user interface designs, prototypes, writing and/or generating code, compiling data driven programs, conducting unit tests and debugging code.

Assignment Deliverables

  • Detailed design and specification documents for RESTful APIs, including endpoints, request/response models, authentication, and error handling.
  • Clean, scalable, and secure REST APIs built using Java and Spring Boot, adhering to best practices and company standards.
  • Modular and decoupled microservices, designed and deployed independently, with clear inter-service communication protocols.
  • Using APIs to develop application based on the business requirement to transform and route data.
  • Comprehensive test coverage using tools like JUnit, Mockito, or Test Containers to ensure code reliability and prevent regressions.
  • Efficient relational database schemas designed and implemented to support API data storage and retrieval.
  • Profiled and optimized APIs for response time, memory usage, and throughput, ensuring high performance under load.
  • Secure API calls with proper authentication (e.g., OAuth2, JWT), authorization, input validation, and protection against common vulnerabilities (OWASP).
  • Dockized applications with configuration files, docker-compose scripts, and Kubernetes manifests (if applicable) for smooth deployment.
  • Integrated monitoring (e.g., Prometheus, Grafana) and logging (e.g., ELK stack, Logstash, or Splunk) for operational visibility.
  • Produce clear documentation for developed systems such as design, deployment instructions, and operational guides.
  • Regular code reviews, feedback sessions, and mentorship to junior developers, ensuring code quality and knowledge sharing.
  • Weekly or sprint-based status updates on development progress, blockers, and delivered functionalities.
  • Timely resolution of production issues, regression fixes, and performance improvements based on user feedback and testing.
  • Available for any on-call on weekend for production issues.
  • Support – Assist with troubleshooting production issues (24/7) and support day-to-day operations

Experience Requirements

A Note on the VOR Master Service Agreement:

The VOR Master Service Agreement expires on April 5, 2027, and includes a six (6)-month survival clause, allowing the Statement of Work (SOW) to continue, if operationally required, until October 5, 2027. Extension(s) are only allowed using unused days and/or funds remaining on the contract. No additional funds will be added beyond the maximum contract value and any extension options included in the original SOW. JTS may exercise its option(s) to extend the SOW beyond April 5, 2027, in accordance with the survival clause.

The start date is subject to change based on security clearances and contract signing timelines.

Experience and Skillset Requirements

Mandatory Requirements

  • Extensive experience in designing, building, and consuming REST APIs, including API documentation and testing, as well as in-depth knowledge of integration patterns and best practices, with experience designing and building integration solutions using Spring Integration.
  • In-depth knowledge of microservice architecture and experience building scalable, highly available systems using various Azure Services, including hands‑on experience with messaging queuing, event‑driven architecture, and asynchronous communication/multi‑threading.
  • Strong skills in SQL and experience working with relational databases such as SQL Server or Oracle.
  • Knowledge of integration with OAuth2, JWT, SAML, and related authentication/authorization technologies.
  • Knowledge of data transformation techniques, such as mapping and normalization, with experience applying them in a Spring Integration context.
  • Ability to transform data between different formats, including JSON, XML, and CSV.

Nice-to-Have Requirements

  • Knowledge and experience in Criminal Justice Business and System

Desired Skills and Experience

  • Strong proficiency in object-oriented programming and functional programming with modern Java features.
  • Strong expertise in Java and the Java development ecosystem, including experience with Spring Boot.
  • In-depth knowledge of microservice architecture and experience building scalable, highly available systems.
  • Expertise in designing, building, and consuming REST APIs; knowledge of HTTP methods, status codes, and REST best practices
  • In-depth knowledge of integration patterns and best practices, including experience designing and building integration solutions using Spring Integration
  • Experience with enterprise integration technologies, such as JMS, AMQP, or REST, and an understanding of how to use them in a Spring Integration context.
  • Strong knowledge of XML and experience working with XML-based integration solutions, such as XSLT and XPath.
  • Knowledge of data transformation techniques, such as mapping and normalization, and experience using them in a Spring Integration context.
  • Experience with message-oriented middleware and enterprise service buses, such as Azure Service Bus
  • Experience on Event Driven architecture, experience on Azure Event Hub, etc.
  • Strong skills in SQL and experience working with relational databases, such as SQL Server, or Oracle.
  • Understanding of security best practices and experience implementing authentication, authorization, and encryption.
  • Strong experience with writing automated tests, including unit, API test, and a deep understanding of the testing process.
  • Familiarity with Kubernetes, Helm, or other container orchestration tools.
  • Familiarity with Agile software development methodologies, such as Scrum or Kanban, and experience participating in sprint planning and retrospectives.
  • Excellent communication skills, both written and verbal, and the ability to work effectively with both technical and non-technical stakeholders.
  • A passion for staying up-to‑date with the latest industry trends and technologies, and a desire to continuously learn and improve your skills.
  • Strong problem‑solving and debugging skills, and experience diagnosing and resolving complex issues.
  • A track record of delivering high-quality, robust, and scalable solutions in a fast-paced, deadline-driven environment.
  • Strong analytical and troubleshooting abilities for complex systems.
  • Clear verbal and written communication for technical and non-technical stakeholders..
  • Capable of mentoring junior developers and contributing to architectural decisions.
  • Ability to prioritize tasks, manage deadlines, and handle multiple responsibilities.

Resumes Evaluation/Criteria:

Criteria 1: Technical Design – 30 Points

  • Strong expertise in Java and the Java development ecosystem, including experience with Spring Boot.
  • In-depth knowledge of microservice, Event Driven architecture and experience building scalable, highly available systems.
  • Extensive experience with REST API design and development, including experience with API documentation and testing.
  • Practical knowledge in applying various design patterns and standards to the technical design and development.
  • Strong skills in SQL and experience working with relational databases, such as SQL Server.

Criteria 2: Integration – 30 Points

  • In-depth knowledge of integration patterns and best practices, including experience designing and building integration solutions using Spring Integration
  • Hands-On experience in messaging queuing (Azure Service Bus) and event driven architecture.

Criteria 3: Technical Framework and Middleware – 25 Points

  • In-depth knowledge of microservice architecture and experience building scalable, highly available systems using various Azure Services.
  • Must have prior experience in working with containerized environments such as Azure, OpenShift, Docker, Kubernetes, Microservices, etc.
  • Experience with message-oriented middleware and enterprise service buses, such as Azure Service Bus.
  • Experience on Event Driven architecture.

Criteria 4: Security – 10 Points

  • Experience with Security and Web Services Security standards and frameworks. Must have extensive working experience in OAuth, OpenID, SAML 2.0, etc.
  • Understanding of security best practices and experience implementing authentication, authorization, and encryption.

Criteria 5: Public Sector Experience – 5 Points

  • Previous experience working in Government or Public Sector organization.

Knowledge Transfer

What needs to be KT

  • Code \& Documentations of all type assigned for this role.

To whom

  • Project Manager / Team members

When

  • 1:1 meetings / team meetings / documentation on SharePoint site, throughout the duration of the project life cycle etc.
Supplier CommentsClosing Date/Time: 2026-07-29, 3:00 p.m.

Max submission: 1 (one)

5 days onsite

Must Have:

  • Extensive experience in designing, building, and consuming REST APIs, including API documentation and testing, as well as in-depth knowledge of integration patterns and best practices, with experience designing and building integration solutions using Spring Integration.
  • In-depth knowledge of microservice architecture and experience building scalable, highly available systems using various Azure Services, including hands‑on experience with messaging queuing, event‑driven architecture, and asynchronous communication/multi‑threading.
  • Strong skills in SQL and experience working with relational databases such as SQL Server or Oracle.
  • Knowledge of integration with OAuth2, JWT, SAML and related authentication/authorization technologies.
#J-18808-Ljbffr
Create a job alert for this search

CDT – 1 Software Developer API (Snr) – 250 + 130 Days • Toronto, ON, Canada

Similar jobs

Ai Software Developer, Toronto - C$65,000 - C$80,000 A Year

symplistic.AiEast York, Canada
Full-time

Develops and deploys AI agents and custom software integrations for enterprise clients, working across the full project lifecycle in a fast-paced startup environment. Show more

 • Promoted

Software Developer 1

IntuitToronto, Ontario, Canada
Full-time

Get AI-powered advice on this job and more exclusive features.We are seeking a highly skilled and motivated Software Developer 1 with a strong background in Java/Kotlin, AWS and React/Typescript to... Show more

 • Promoted

Software Developer Iii

DayforceToronto, Canada
Full-time

Dayforce is a global human capital management (HCM) company headquartered in Toronto, Ontario, and Minneapolis, Minnesota, with operations across North America, Europe, Middle East, Africa (EMEA), ... Show more

 • Promoted

API Developer

Spruce InfoTech Inc.Toronto, ON, CA
Full-time

Role: API Developer (REST, Microservices, Cloud).Location: Toronto, ON - Hybrid.Lead and contribute to the migration of existing.Azure / PCF applications to Atlas.Refactor backend services and UI c... Show more

 • Promoted

Consultant Developer (Software Developer) - Industry Innovation & Co-Development Group

Guidewire SoftwareToronto, ON, CA
Full-time

Consultant Developer (Software Developer) - Industry Innovation & Co-Development Group.Organization: Industry Innovation & Co-Development Group (InnoCoDev).This team will operate as a dedicated str... Show more

 • Promoted

Hybrid Software Developer, Scheduling Focus

Kinaxistoronto, on, Canada
Full-time

Join an innovative team as a Hybrid Software Developer specializing in scheduling algorithms.This role, based in Ottawa or Toronto, Canada, focuses on delivering enterprise-grade solutions.You will... Show more

 • Promoted

API Developer

Maplesoft Group, an SEB CompanyToronto, ON, CA
Full-time

Federal Government Clearance Level Required.Maplesoft Group is currently seeking a Hybrid API Developer for our client in Toronto, ON.This role requires 2 days/week on-site.We are seeking an experi... Show more

 • Promoted

AI-Driven Software Developer with Full-Stack Focus

Roadposttoronto, on, Canada
Full-time

Become a key contributor as a Software Developer in an AI-first engineering environment.Design and implement sophisticated web applications using React, Node.PostgreSQL for exceptional user engagem... Show more

 • Promoted

Senior Software Developer - Integration & API Specialist

Source CodeToronto, ON, CA
Full-time

A leading technology firm located in Ontario is seeking a Sr.Software Developer for an on-site position in Toronto or North Bay for a 1-year contract.The role involves sustaining police systems, le... Show more

 • Promoted

Downtown Toronto Senior API Developer

Source CodeToronto, Ontario, Canada
Full-time

Take your API development skills to new heights as a Senior API Developer in downtown Toronto.This on-site role emphasizes hands-on experience with APIs in a dynamic hybrid environment.In this posi... Show more

 • Promoted

Ai-Driven Software Developer With Full-Stack Focus

RoadpostToronto, Canada
Full-time

Become a key contributor as a Software Developer in an AI-first engineering environment.Design and implement sophisticated web applications using React, Node.Js, and PostgreSQL for exceptional user... Show more

 • Promoted

Software Developer, Ai - $90,000 - $132,000 A Year

BlackBerryEast York, Canada
Full-time

Develop and deploy AI-driven features and solutions using Microsoft technologies, enhancing business processes.Collaborate with stakeholders and communicate technical information. Show more

 • Promoted

RQ08889 - Software Developer - API - Senior

Rubicon PathToronto, Ontario, Canada
Full-time

RQ08889 - Software Developer - API - Senior.About the job RQ08889 - Software Developer - API - Senior.This position is currently listed as "Onsite"; however, the Assignment under this request will ... Show more

 • Promoted

Senior Ai Software Developer - C$132,000 - C$165,000 A Year

RedwoodNorth York, Canada
Full-time

Lead AI initiatives across the software development lifecycle, driving innovation, product research, and strategy.Design experiments, deliver prototypes, and propose AI-driven solutions to enhance ... Show more

 • Promoted

Senior API Developer - Azure Focus

Healthcare of Ontario Pension Plan Trust Fund Companytoronto, on, Canada
Full-time

Make an impact as a Senior API Integration Engineer on the Pension Application Development Team, dedicated to enhancing our Digital Insight Services Platform.Leverage your skills in a people-focuse... Show more

 • Promoted

Software Developer Ii Toronto, On - C$84,000 - C$127,000 A Year

7ShiftsNorth York, Canada
Full-time

Intermediate Software Developer sought to build and scale payroll and tips platforms, collaborating cross-functionally to deliver high-impact solutions for restaurants. Show more

 • Promoted

Software Developer - Full Stack - Senior

i-Net ConnexionToronto, ON, CA
Full-time

Microsoft/Azure Development and Quality Assurance Experience.Entity Framework or other Object-Relational Mapping data access tools.Knowledgeable in Web Content Accessibility Guidelines (WCAG) for w... Show more

 • Promoted

Senior Software Developer, Kubernetes Compute

Robinhoodtoronto, on, Canada
Full-time

Join us in building the future of finance.Our mission is to democratize finance for all.An estimated $124 trillion of assets will be inherited by younger generations in the next two decades.The lar... Show more

 • Promoted

Software Developer, Kubernetes Compute

United States Digital Space LLCtoronto, on, Canada
Full-time

Join us in building the future of finance.Our mission is to democratize finance for all.An estimated $124 trillion of assets will be inherited by younger generations in the next two decades.The lar... Show more

 • Promoted

Senior Software Developer (Askuity division)

The Home Depottoronto, on, Canada
Full-time

Pay Range: $135,000 - $165,000.At The Home Depot Canada, we want you to feel valued and supported.The pay range you see represents base salary only.In addition, your total rewards may include: semi... Show more