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Added 9 days ago
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Full Stack Developer
PiiComm
ON · Plantagenet, ON
- Full-time
PiiComm is seeking a Full Stack Developer to join our growing R&D team. You will own deliverables from concept through deployment, building production-ready applications in Azure with…
Added 9 days ago
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Senior Security Engineer
PheedLoop
Toronto, ON
- Full-time
Lock down the developer workstation as a first-class attack surface. Set the bar for endpoint hardening, extension hygiene, secret management, and least-privilege access across every…
Added 9 days ago
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Senior AI Platform Engineer
Hays
Toronto, ON
- $90 to $100 CAD / hour
- Full-time
Senior AI Platform Engineer – Developer Productivity
Added 9 days ago
CO
Staff Software Engineer - Capital One Travel Tech - Full-stack / développeur principal ou développeuse principale en logiciels
Capital One
Toronto, ON
- Full-time
Act as a tech lead developer owning technical design and development of cross-functional, multi-platform, fault tolerant application systems
Added 9 days ago
Software Test Analyst
The Descartes
Waterloo, ON
…With record financial performance for more than 16 years, we lead the industry in innovation investment. Every day, logistics service providers, manufacturers, retailers, distributors, and…
Added 9 days ago
TY
Technical Consultant
Test Yantra
Toronto, ON
- Full-time
Lead technical workstreams, collaborate with clients, and mentor junior team members.
Added 9 days ago
KC
Senior Consultant, Microsoft Fabric Data Engineer, Data & AI
KPMG Canada
Toronto, ON
- Full-time
…strong consulting capabilities. This role will support and lead data platform modernization initiatives, helping clients migrate from legacy and on‑premise environments to scalable, secure,…
Added 9 days ago
NB
Senior Data Scientist Production and Reporting Lead
National Bank of Canada
Richmond Hill, ON
- Full-time
Lead the development of risk processes to support new product launching, acquisitions, new portfolio integration, data migration and risk reporting.
Added 9 days ago
HT
Software Validation Technologist
Husky Technologies
Bolton, ON
- Full-time
…passion of our people around the world and their desire to lead change. At the same time, we are not afraid to expect a lot and strive for leadership in all of our key markets. We are a…
Added 9 days ago
NB
Senior Director Treasury Models Validation
National Bank of Canada
Montreal, QC
- Full-time
and analytics tools such as Python, R, or SQL, and the ability to review model
Added 10 days ago
CO
Application & Integration Technical Analyst
City of Saint John
Saint John, NB
- Full-time
Under the direction of the designated IT Manager, the Application and Integration Technical Analyst is a technical lead responsible for system architecture, data strategy, and integration…
Added 10 days ago
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Postdoctoral Fellow
RI-MUHC | Research Institute of the MUHC | #rimuhc
Montreal, QC
- Full-time
Our laboratory, lead by Dr. Stella Daskalopoulou, conducts highly translational cardiovascular research, connecting patient-based clinical studies and deeply phenotyped biobanks with…
Added 10 days ago
HT
Software Validation Technologist
Husky Technologies
Bolton, ON
- Full-time
…passion of our people around the world and their desire to lead change. At the same time, we are not afraid to expect a lot and strive for leadership in all of our key markets. We are a…
Added 10 days ago
T
Data Engineer II
TD
Toronto, ON
- Full-time
Be the lead participant in the design & architecture reviews or the application
Added 10 days ago
SM
RQ00821 – Solution Architect – CRM – Intermediate
S M Software Solutions Inc
Toronto, ON
- Internship
…full lifecycle implementation. The successful candidate will lead functional and technical solution development, collaborate with City divisions and vendors, oversee implementation…
Added 10 days ago
SM
RQ00821 – Solution Architect – CRM – Intermediate
S M Software Solutions Inc
Toronto, ON
- Internship
…full lifecycle implementation. The successful candidate will lead functional and technical solution development, collaborate with City divisions and vendors, oversee implementation…
Added 10 days ago
SM
RQ00821 – Solution Architect – CRM – Intermediate
S M Software Solutions Inc
Toronto, ON
- Internship
…full lifecycle implementation. The successful candidate will lead functional and technical solution development, collaborate with City divisions and vendors, oversee implementation…
Added 10 days ago
SM
RQ11716 – Systems Testing/QA Specialist – Intermediate
S M Software Solutions Inc
Toronto, ON
- Internship
Develop test plans, test scripts, and test cases and execute them against various components. Work with the testing lead and IT lead of each project, as well as project team members, in the…
Added 10 days ago
SM
RQ11716 – Systems Testing/QA Specialist – Intermediate
S M Software Solutions Inc
Toronto, ON
- Internship
Develop test plans, test scripts, and test cases and execute them against various components. Work with the testing lead and IT lead of each project, as well as project team members, in the…
Added 10 days ago
SM
RQ11716 – Systems Testing/QA Specialist – Intermediate
S M Software Solutions Inc
Toronto, ON
- Internship
Develop test plans, test scripts, and test cases and execute them against various components. Work with the testing lead and IT lead of each project, as well as project team members, in the…
Added 10 days ago
HT
Software Validation Technologist
Husky Technologies
Bolton, ON
- Full-time
…passion of our people around the world and their desire to lead change. At the same time, we are not afraid to expect a lot and strive for leadership in all of our key markets. We are a…
Added 10 days ago
CO
Application & Integration Technical Analyst
City of Saint John
Saint John, NB
- Full-time
Under the direction of the designated IT Manager, the Application and Integration Technical Analyst is a technical lead responsible for system architecture, data strategy, and integration…
Added 10 days ago
TI
Lead Full Stack Developer
Themesoft Inc.
Toronto, ON
- Contract
7+ years of backend development experience in Java or Python
Added 10 days ago
DE
Data & AI Engineer / Ingénieur Des Données & IA
Dunsky Energy + Climate Advisors
Toronto, ON · Greater Toronto Area, Canada
- Full-time
…deal of importance on offering our team the chance to grow and lead fulfilling lives both at work, and at home. We believe that how we work together is as important as the work we…
Added 10 days ago
R|
Postdoctoral Fellow
RI-MUHC | Research Institute of the MUHC | #rimuhc
Montreal, QC
- Full-time
Our laboratory, lead by Dr. Stella Daskalopoulou, conducts highly translational cardiovascular research, connecting patient-based clinical studies and deeply phenotyped biobanks with…

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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