Kitchener Waterloo On Stack engineer Jobs – 78 Openings This Week

Senior Software Engineer (Python) - Agent Evaluation - Freelance/Remote 100+ openings
Braintrust —Waterloo, ON
- Part-time
- Remote
- English
- Python
Senior Software Engineer, Core Experiences - Waterloo, Canada
Speechify —Waterloo, ON
- Remote
- Java
- APIs
8d
Senior Product Designer
Encircle —Kitchener, ON
- $100,000–$112,000 a year
- Full-time
- Remote
- AI
- Flexible schedule
Quick apply
Senior AI Platform Engineer
Alpaca —Waterloo, ON
- Remote
- DevOps
- APIs
- AI
Quick apply
Senior Field Technician
Rowan Williams Davies Irwin (RWDI) —Guelph, ON
- $100,000–$150,000 a year
- Weekends as needed
- Engineering
- Analysis skills
- Travel
Quick apply
FPGA Developer - Kitchener, Ontario, Canada
GTS —Kitchener, ON
- Full-time
- Analysis skills
- C++
- Linux
5d
Senior Field Technician
RWDI —Guelph, ON
- $100,000–$150,000 a year
- Weekends as needed
- Engineering
- Analysis skills
- Travel
Senior Solutions Consultant - Open Data Platform
Acceldata —Kitchener, ON
- Full-time
- Oracle
- Up to 50% travel
- Java
12d
Software Manager
BrightOrder Inc. —Canada
- $115,000–$125,000 a year
- Full-time
- Bilingual
- Computer Science
- Engineering
- Dental care
- Vision care
Quick apply

More jobs to discover

Find similar jobs that you might be interested in.

Senior Software Engineer, Core Experiences - Waterloo, Canada
Speechify —Waterloo, ON
Optimize existing functionality to ship things like faster loading and more intelligent parsing by designing more efficient abstractions and improving our…
8d
Senior Structural Engineer- Buildings- Guelph
J.L. Richards & Associates Ltd —Guelph, ON
Acting as a Discipline Lead on multidisciplinary projects, taking leadership of the structural design team, driving the overall design, coordinating across all…
Quick apply

Show more similar jobs

Explore jobs in cities nearby

Check out jobs in cities near your current location, Columbus

Senior Software Engineer (Laravel/PHP, Node.js, React)
Frontier Dental Supply —Markham, ON
This is a hands-on leadership role where you will combine deep technical expertise with strategic thinking — writing production code daily while shaping…
$90,000–$110,000 a year
Full Stack Angular Developer
Jeavensoft —Toronto, ON
Lead in the architecture, design, specification, development and implementation of SaaS solutions that can be deployed in the private public cloud environment.

Show more jobs in cities nearby

I want to receive the latest job alerts for stack engineer in kitchener waterloo on

By signing in to your account, you agree to SimplyHired's Terms of Service and consent to our Cookie and Privacy Policy.

Explore jobs in more locations

stack engineer jobs near kitchener waterloo on

Senior Software Engineer (Python) - Agent Evaluation - Freelance/Remote 100+ openings

Braintrust -
Waterloo, ON

Apply Now

Job details

Part-time | Freelance

Qualifications

CI/CD
React
Full-stack development
English
Docker
PostgreSQL
TypeScript
Python

Full job description

Job description

***This opportunity is intended for experienced Senior Python Engineers only****

Open to candidates in the North America, South America, Asia and Europe.
Please submit your CV in English and indicate your level of English proficiency.

Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment.

What this opportunity involves

We're building a dataset to evaluate AI coding agents - how well a model handles real-world developer tasks.

You'll create challenging tasks and evaluation criteria within realistic simulated environments:

Build realistic developer environments - a virtual company with codebase, infrastructure, and context (tickets, docs, conversations) that forms a believable development history
Design tasks from intermediate states of these environments - craft the prompt, define what "solved" means, and ensure the task is solvable by an AI agent
Write tests that verify agent solutions - accept all valid approaches and reject incorrect ones, neither too strict nor too lenient
Iterate on tasks and tests based on QA feedback - review agent solutions, analyze failures, and refine until the evaluation is fair and robust

What this is NOT

Not data labeling
Not prompt engineering
Not writing code from scratch - the agent writes most of the code; you guide and evaluate

What we look for - You must meet all the requirements in order to be considered for this project:

5+ years of professional experience with Python.
Strong experience with FastAPI, pytest, and async/await.
Hands-on experience with Docker, PostgreSQL, and CI/CD pipelines.
Proven experience writing and maintaining automated tests (not just executing them).
Full-stack experience with React and TypeScript is a plus.
English proficiency at B2 level or higher.
Availability to work 30+ hours per week.

Why this is hard

Frontier models are already good at coding. Creating a task that genuinely challenges the best models is non-trivial. You need to deeply understand where models fail and what scenarios reveal the difference between a good and a bad solution. Tasks have many valid solutions - writing tests that accept all correct solutions and reject incorrect ones is harder than it sounds.

How it works

Apply Pass qualification(s) Join a project Complete tasks Get paid

Hiring & Onboarding Process

The process is designed to move quickly and typically includes the following steps:

App review and invitation to a virtual project introduction session (approximately 30 minutes)
Platform registration and identity verification
Technical assessment (approximately 35 minutes)
Background check (completed at no cost to candidates)
Onboarding and project-specific training tasks
Begin production work!

Additional Requirements

Willingness to complete identity verification as part of the onboarding process.
Ability to complete a technical assessment.
Willingness to join and participate in Discord, which will be used for project communication and updates.
Successful completion of a background check is required prior to onboarding.
Reliable internet connection and ability to communicate effectively in a remote environment.

Apply Now

Refine Your Search

stack engineer jobs in kitchener waterloo on

Senior Software Engineer (Python) - Agent Evaluation - Freelance/Remote 100+ openings

Senior Software Engineer, Core Experiences - Waterloo, Canada

Senior Product Designer

Senior AI Platform Engineer

Senior Field Technician

FPGA Developer - Kitchener, Ontario, Canada

Senior Field Technician

Senior Solutions Consultant - Open Data Platform

Software Manager

More jobs to discover

Explore jobs in cities nearby

I want to receive the latest job alerts for stack engineer in kitchener waterloo on

Related Searches

Explore jobs in more locations

Hiring & Onboarding Process

Additional Requirements

Job seeker tools

Employer Tools

Browse

Stay Connected