Senior Full Stack Software Developer

Mecka; Toronto; On-site; CAD 120,000 - 180,000; Full time

Job summary

Mecka AI in Toronto is seeking a Senior Full Stack Software Engineer to build production web apps powering global operations. You will own features end-to-end across frontend, backend, and integrations, leveraging AI tools to move faster and maintainability.

You will collaborate with operators, data teams, and engineers to deliver reliable software that scales in a data-heavy, robotics-focused environment. The role emphasizes user-centric UX for international teams, REST/GraphQL APIs with

Qualifications

• 5-7 years of professional experience building production-grade full-stack apps.
• Strong frontend: JavaScript/TypeScript, React, and modern web frameworks.
• Strong backend: REST/GraphQL APIs with Node.js and/or Python.
• Experience with PostgreSQL and ORMs.
• Active daily use of AI development tools to prototype faster and debug code.
• Ability to ship features end-to-end and collaborate with non-technical teams.

Responsibilities

• Build and maintain web apps for data labeling, data capture, and country/operations management.
• Design clean, fast interfaces for international teams.
• Develop backend services and APIs.
• Integrate AI capabilities and LLM tooling into internal tools.
• Ensure production reliability, monitor performance, and troubleshoot issues.

Skills

JavaScript/TypeScript

React

Node.js/Express

Python

REST/GraphQL APIs

PostgreSQL

AI tooling

End-to-end delivery

Tools

Next.js

Docker

CI/CD

Cursor

Copilot

Claude

FastAPI

Job description

About Mecka AI

Mecka AI is building the data infrastructure layer for robotics and embodied AI.
We design and operate global systems for data capture, data labeling, and hardware-enabled workflows used by leading AI labs and robotics companies to train and validate humanoid and embodied AI systems.
We work closely with frontier robotics teams to bridge real-world data, simulation, learning-based systems, and deployed hardware.

The Role

We're hiring a Senior Full Stack Software Engineer based in Toronto to build and ship production web applications that power Mecka’s global operations.

This role is for an action-oriented builder who has delivered production web applications, writes clean and maintainable code, and wants to take ownership of features end-to-end—across the frontend, backend, and operational integrations. You should be someone who actively leverages modern AI tools to move faster, debug efficiently, and expand your impact.

You'll work directly with operators, data teams, and senior engineers to turn operational requirements into reliable, intuitive software.

What You’ll Work On

• Build & Maintain: Develop web applications for data labeling, data capture, and country/operations management using React (JavaScript / TypeScript) and modern frameworks (e.g., Next.js).

• User-Centric UX: Design clean, fast, and intuitive interfaces for non-technical users and international teams operating under real-world conditions.

• Backend Systems & APIs

• Services & APIs: Build and iterate on backend services using Node.js (Express/Fastify) and/or Python (FastAPI/Django).

• Operational Logic: Work with core business logic handling permissions, retries, data integrity, and background workflows for data-heavy operations.

Practical AI Integrations

• Feature Development: Integrate AI capabilities into internal tools where they add real value (e.g., automated data validation, normalization, workflow triggers, search, and internal tooling).

• Tooling & Workflows: Work with prompt-based systems and structured LLM integrations alongside our research and ops teams.

Feature Ownership & Execution

• End-to-End Delivery: Take features from design and implementation through testing and deployment.

• Production Support: Monitor, debug, and improve performance and reliability in production.

• Pragmatic Mindset: Balance speed, code cleanliness, and correctness with guidance from senior engineering leadership.

Who you are:

• 5-7 years of professional experience building and maintaining full-stack web applications in production environments.

• Solid Frontend Skills: Proficiency in JavaScript / TypeScript, React, and modern web frameworks.

• Solid Backend Skills: Hands-on experience developing REST/GraphQL APIs with Node.js and/or Python.

• Database & Data Basics: Practical experience working with relational databases (e.g., PostgreSQL) and ORMs.

• AI Tooling as a Force Multiplier: Active daily use of AI development tools (Cursor, Copilot, Claude, etc.) to prototype faster, debug code, and increase productivity.

• End-to-End Execution: Ability to work across the stack to ship features and troubleshoot issues independently.

What you bring:

• Experience building internal tools, dashboards, or workflow-heavy applications.

• Comfort working alongside non-technical stakeholders (operations, product, leadership) to clarify feature requirements.

• Good instincts for keeping solutions simple and maintainable rather than over-engineering.

• Strong team player who communicates clearly, accepts feedback, and enjoys continuous learning.

Even better if you have:

• Exposure to cloud environments (*AWS, GCP, or Azure**) and standard deployment pipelines (CI/CD, Docker).

• Basic experience or strong curiosity regarding AI/LLM API integrations (e.g., prompt engineering, document extraction, vector search).

• Experience with data pipelines, ETL workflows, or handling data-intensive operations.

• Prior experience in consulting, client-facing roles, or fast-paced startup environments.

• Familiarity with mobile development (React Native) or design systems.

We strive to create an inclusive work environment for all; we welcome applicants from all backgrounds and are committed to providing equal opportunities. Should you require any accommodations during the recruitment process, we will partner with you to meet your needs.

We may use AI-assisted tools to help evaluate applications against the requirements of this role. These tools support our recruiting team in identifying qualified candidates but do not replace human judgment or limit which applications may be reviewed or considered.