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Added 6 days ago
P
Solution Architect, Applied AI
Plusgrade
Montreal, QC · CAN - Montreal
- Full-time
…that seamlessly connect complex backend ML logic with frontend delivery layers. You will partner closely with Data Science, Data Engineering, and Enterprise Architecture to synchronize data…
Added 6 days ago
P
Senior Applied AI Developer
Plusgrade
Montreal, QC · CAN - Montreal
- Full-time
…pipelines in AWS and Kubernetes. Our engineering workflows and delivery pipelines are built directly around cutting-edge AI infrastructure and automated observability systems to keep…
Added 6 days ago
SS
Développeur(euse) logiciel senior Full Stack/Full Stack Senior Software Developer
SITA Switzerland Sarl
Montreal, QC
- Full-time
Reporting to the Application Development Manager, the Full Stack Senior Software Developer role is the key role within SITA FOR AIRCRAFT BUSINESS to address business requirements, build…
Added 6 days ago
T
Quality Engineer I
TD
Toronto, ON
- Full-time
Build automation using Selenium, Karate, REST Assured, Appium, Cucumber, and Java.
Added 6 days ago
NV
Release Lead (ID#5532)
New Value Solutions
Richmond, BC
- Contract
…experienced Intermediate Release Lead II / Technical Project Manager to support the planning, coordination, and successful delivery of enterprise software releases and associated IT…
Added 6 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 6 days ago
A
Data Solutions Specialist
Accenture
Toronto, ON · Montreal, QC
- Full-time
Closely work with project manager and technical leads to provide regular status reporting and support them to identify blockers for quick resolution
Added 6 days ago
QT
Senior Database Performance Engineer
QHR Technologies
Kelowna, BC
- Full-time
…ability to translate application behaviour - particularly within Java-based systems - into database performance insights. You thrive on troubleshooting, data-driven decision making, and…
Added 6 days ago
CS
AI Security Research Program Manager
CONFLUX SYSTEMS
Toronto, ON
- Contract
Job Title: AI Security Research -Sr Program Manager
Added 6 days ago
TI
Full Stack Developer
Themesoft Inc.
Toronto, ON
- Contract
…to best practices, while managing the end-to-end technical delivery of…
Added 6 days ago
T
IT Manager Development (Java/Spring Boot and Enterprise Applications)
TD
Toronto, ON
- Full-time
Lead the delivery of Java-based payment orchestration solutions supporting domestic payment rails working with network Interac.
Added 7 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 7 days ago
T
Solutions Design IT Specialist
TD
Toronto, ON
- Full-time
We are looking for a Senior Java Developer / Solutions Design IT Specialist to join our Payments Engineering team and help build, maintain, and evolve high-performance, reliable,…
Added 7 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 7 days ago
TI
Lead Full Stack Developer
Themesoft Inc.
Toronto, ON
- Contract
…to best practices, while managing the end-to-end technical delivery of…
Added 8 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 8 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 8 days ago
B
Senior Development Lead - (Cloud /Payment Systems)
BMO
Toronto, ON · BMOPLACE
- Full-time
…capability with application design, coding, troubleshooting and delivery leadership. This person will guide internal and vendor developers, review designs and code, drive resilient…
Added 9 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 9 days ago
Senior Software Engineer II
Schneider Electric
Calgary, AB
Professional Services Delivery | Approximately 25%
Added 9 days ago
R
Senior Manager, Engineer & Build
RBC
Toronto, ON
- Full-time
As a Senior Manager, Engineering & Build (Hands-On Leader), you will lead an engineering team while contributing ≈50% hands-on to design and deliver cloud-native, governed, and reliable…
Added 9 days ago
RB
Senior Manager, Software Development
Royal Bank of Canada
Toronto, ON
- Full-time
…enterprise AI Engineering Platform that accelerates software delivery through reusable AI capabilities, standardized engineering workflows, and…
Added 9 days ago
SE
Senior Software Engineer II
Schneider Electric
Calgary, AB
- $114,750 to $162,000 CAD / year
- Part-time
Professional Services Delivery | Approximately 25%
Added 9 days ago
KG
Agent & DevOps Platform Engineer
K&K Global Talent Solutions INC.
Toronto, ON
- Full-time
Working experience with at least one additional language or ecosystem such as Java, .NET, Groovy, or Node.js
Added 9 days ago
Manager Mobile Solutions Technology
Purolator
ON · Mississauga, ON
…and parcel shipments, customs brokerage, and fulfillment and delivery services to, from and within North America. We are a subsidiary of Purolator Inc., Canada’s largest leading integrated…

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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