Senior Software Developer Back End

Do you have 10+ years of experience as a designer and developer in the large-scale multi-client web applications? Do you have 10+ years of hands-on working experience of Java development with Oracle or SQL database? If so, this would be a great opportunity for you!

Our client is looking for a Senior Software Developer Back End for a 12 month contract in Toronto.

This is a hybrid role.

Advantages

• Earn a competitive rate within the industry.

•

Location:

From October 20, 2025, the candidate is required to work onsite 4 days a week and 1 day from home
From January 5, 2026, the candidate is required to work onsite 5 days a week fully.

• Potential for extension.

Responsibilities

• Responsible for managing the interchange of data between the server and the users.

• Required to translate technical systems specifications into working, tested applications.
This includes: developing detailed programming specifications writing and/or generating code compiling data-driven programs maintaining, and conducting unit tests Resolves and troubleshoots technical problems which arise during the use and operation of software packages, including technical assistance in implementation, conversion.

Qualifications
Must Have:

• 10+ years of experience as a designer and developer in the large-scale multi-client web applications

• 10+ year of hands-on working experience of Java development with Oracle or SQL database

• 5+ years of hands-on experience of RestAPI, RESTful Web Services

• Knowledge of security gateways and protocols (JWT, Oauth
2.0, SSL Certificates).

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 Back End Skills Knowledge and experience with developing all server-side logic, definition and maintenance of the central database, and ensure high performance and responsiveness to requests from the front-end.

Knowledge and experience with front-end technologies Knowledge and experience to integrate the front-end elements into the application

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.

Summary
If you are interested in the Senior Software Developer Back End role in Toronto, please apply online at  Qualified candidates will be contacted.

Randstad Canada is committed to fostering a workforce reflective of all peoples of Canada. As a result, we…