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Added 6 days ago
SM
RQ11600 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with extensive experience in n-tier web-based applications, Java EE (J2EE), database technologies, cloud-native technologies, front-end…
Added 6 days ago
SM
RQ11600 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with extensive experience in n-tier web-based applications, Java EE (J2EE), database technologies, cloud-native technologies, front-end…
Added 7 days ago
TI
Lead Full Stack Developer
Themesoft Inc.
Toronto, ON
- Contract
Strong experience with React and modern frontend development, including Micro-frontend (MFE) architectures and reusable UI components
Added 7 days ago
SM
RQ11600 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with extensive experience in n-tier web-based applications, Java EE (J2EE), database technologies, cloud-native technologies, front-end…
Added 7 days ago
SM
RQ11600 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with extensive experience in n-tier web-based applications, Java EE (J2EE), database technologies, cloud-native technologies, front-end…
Added 7 days ago
SM
RQ11600 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with extensive experience in n-tier web-based applications, Java EE (J2EE), database technologies, cloud-native technologies, front-end…
Added 7 days ago
SM
RQ11600 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with extensive experience in n-tier web-based applications, Java EE (J2EE), database technologies, cloud-native technologies, front-end…
Added 7 days ago
SM
RQ11600 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with extensive experience in n-tier web-based applications, Java EE (J2EE), database technologies, cloud-native technologies, front-end…
Added 7 days ago
SM
RQ11600 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with extensive experience in n-tier web-based applications, Java EE (J2EE), database technologies, cloud-native technologies, front-end…
Added 8 days ago
C
Software Developer Full Stack / Backend I (Co-op) - Canada
Cisco
Calgary, AB
- Full-time
As a Software Developer Co-op, you will design, develop, and test software features across web applications, cloud microservices, and distributed platforms. Collaborate with agile…
Added 8 days ago
C
Technical Lead
Capgemini
Toronto, ON
- Full-time
We are hiring a Technical Lead with 10+ years of experience in full-stack development, specializing in TypeScript, Node.js, React, and AWS Serverless technologies. The role involves leading…
Added 8 days ago
I
Staff Software Developer, Full Stack
Intuit
Toronto, ON
- Full-time
The ideal candidate is an experienced Software Developer who is experienced with Java, TypeScript, React and general full-stack development. This engineer should be full-stack and prepared…
Added 8 days ago
R
Lead Full Stack Developer
RBC
Toronto, ON
- Full-time
A Lead Full Stack Developer is responsible for designing, developing and maintaining legacy and "Cloud First" applications written primarily in C# and focused on .Net Core and cloud…
Added 8 days ago
C
Software Developer Full Stack / Backend I (Co-op) - Canada
Cisco
Montreal, QC
- Full-time
As a Software Developer Co-op, you will design, develop, and test software features across web applications, cloud microservices, and distributed platforms. Collaborate with agile…
Added 8 days ago
C
Software Developer Full Stack / Backend I (Co-op) - Canada
Cisco
Montreal, QC · Saint-Laurent, QC
- Full-time
As a Software Developer Co-op, you will design, develop, and test software features across web applications, cloud microservices, and distributed platforms. Collaborate with agile…
Added 8 days ago
C
Software Developer Full Stack / Backend I (Co-op) - Canada
Cisco
Halifax, NS
- Full-time
As a Software Developer Co-op, you will design, develop, and test software features across web applications, cloud microservices, and distributed platforms. Collaborate with agile…
Added 8 days ago
C
Software Developer Full Stack / Backend I (Co-op) - Canada
Cisco
Vancouver, BC
- Full-time
As a Software Developer Co-op, you will design, develop, and test software features across web applications, cloud microservices, and distributed platforms. Collaborate with agile…
Added 8 days ago
Senior Frontend Developer, Market Innovations
HelloFresh
Toronto, ON
Contribute across the full stack, including APIs, backend services, integrations, and data where needed
Added 8 days ago
AS
Full Stack Java Developer
Apex Systems
Toronto, ON
- $55 to $80 USD / hour
- Contract
We are seeking an Expert Full Stack Developer to design, build, and maintain both front-end interfaces and back-end systems, including APIs, microservices, databases, and cloud deployments.…
Added 8 days ago
B
Lead Java Developer
BuzzClan
ON · Ontario, Canada
- Contract
Position Title: RQ11600 - Senior Full Stack Software Developer
Added 8 days ago
ZC
Full Stack Developer (Java/JavaScript)
Ztek Consulting
Montreal, QC
- $120,000 to $150,000 CAD / year
- Full-time
Job Role: Full Stack Developer (Java/JavaScript)
Added 8 days ago
BI
Java Full Stack Developer – Apache
BURGEON IT SERVICES
Montreal, QC
- Contract
We are looking for an experienced Java Full Stack Developer with strong knowledge of Java, Spring Boot, REST APIs, and front-end technologies. The candidate should have experience…
Added 8 days ago
I
Software Developer - Full Stack - Senior
isgSearch
Toronto, ON · Greater Toronto Area, Canada
- Contract
Software Developer - Full StackWork Arrangement: On-site, 5 days per week
Added 8 days ago
Senior Software Engineer II, Investors
Carta
Toronto, ON · Waterloo, ON
The Tech Stack: You have experience with (or a desire to learn) our core technologies: Python, Django, React, Postgres, and Kafka. We also utilize Java, gRPC, and AWS.
Added 8 days ago
O
Sr. IT Software Developer
OpenText
Waterloo, ON
- Full-time
As a Sr. IT Software Developer (Digital Fullstack), you will independently deliver full-stack and platform capabilities for OpenText's digital experience ecosystem. You will work across…

Themesoft Inc.

Lead Full Stack Developer

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 17, 2026
Experience: 7+ years of backend development experience in Java or Python
Posting language: English
Posted: Oct 18, 2026

Original job description

Position: Lead Full Stack Developer

Location: Toronto, On – Hybrid

Job Summary:

Designs, develops, and oversees the implementation of advanced technical solutions, ensuring alignment with business objectives and adherence to best practices, while managing the end-to-end technical delivery of projects.
Build Gen AI system frameworks, Prompt Engineering, including designing and refining prompts to optimize LLM outputs, implementing Gen AI systems into production.
Leads development teams in the delivery of capabilities, providing technical direction and guidance to junior developers and team members and ensuring the successful execution of complex assignments and projects
Collaborates with business stakeholders and product owners to translate strategic objectives into actionable technical solutions, leveraging advanced knowledge to address unique and high impact challenges.
You will be responsible for working closely with AI data scientists to support data ingestion and feature engineering, establishing industry best practices, maintaining and managing technical documentations.
Executes on software development tasks or projects, requiring advanced problem solving, decision making and strategic thinking with some ambiguity.
Drives decisions on complex issues to develop clear, actionable recommendations for management, ensuring alignment on processes, tools and services with impact across other areas.
Leverages advanced and creative skills to resolve complex software development related problems, fostering cross functional collaboration to identify and implement innovative solutions.
Leads and facilitates cross functional collaboration efforts, fostering strong internal relationships across the organization and external partnerships to achieve impactful business outcomes.

Required Skills:

7+ years of backend development experience in Java or Python
Strong backend development experience in Java or Python, including REST API and microservices
Strong experience with React and modern frontend development, including Micro-frontend (MFE) architectures and reusable UI components
Hands-on experience or strong understanding of Agentic AI concepts, LLM integrations
Understanding of prompt engineering and Gen-AI Development tools (GitHub Copilot, Windsurf, Claude Code)
Experience with Cloud platforms and technologies (OpenShift, Kubernetes, S3 Object Storage)
Experience working with relational databases particularly PostgreSQL, including schema design, query optimization and performance tuning.

Regards

Patrick Fernandez

Talent Acquisition Group - Strategic Recruitment Manager

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More about this job

Responsibilities

Lead end-to-end technical delivery and development teams, designing and implementing advanced software solutions aligned with business objectives. Build and productionize generative AI systems, collaborate with stakeholders and data scientists, and guide technical decisions, documentation, and cross-functional delivery.

Requirements

Requires 7+ years of backend development experience with Java or Python, including REST APIs and microservices, plus strong React and modern frontend experience. Candidates should have experience or understanding of agentic AI and LLM integrations, prompt engineering and generative AI tools, cloud technologies, and PostgreSQL schema design and performance tuning.

Skills

Java
Python
Backend Development
REST APIs
Microservices
React
Micro-Frontend Architectures
Agentic AI
LLM Integration
Prompt Engineering
Generative AI
Kubernetes
OpenShift
S3 Object Storage
PostgreSQL
Cloud Platforms

Visa sponsorship

Not detected in the job text

Hiring contact

Patrick Fernandez

Keywords

Java
Python
Backend Development
REST APIs
Microservices
React
Micro-Frontend Architecture
Reusable UI Components
Agentic AI
LLM Integration
Prompt Engineering
Generative AI
GitHub Copilot
Windsurf
Claude Code
OpenShift
Kubernetes
S3 Object Storage
PostgreSQL
Relational Databases
Schema Design
Query Optimization
Performance Tuning
Data Ingestion
Feature Engineering
Technical Documentation
Cloud Platforms
Technical Leadership
Cross-Functional Collaboration

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