Senior Backend Engineer in Toronto

The Production Scheduling Technology team builds and maintains the platform that powers how HelloFresh plans, sequences, and optimizes production across our operations. Our team has developed the first iteration of the next-generation internal system with a planning engine that now automates the end-to-end planning process – a system with deep impact on how millions of meals move through our network. As we continue evolving this system, extending its capabilities, and preparing for expansion, we are looking for a Senior Software Engineer with strong backend experience, a talent for turning complex logic into clean, reliable systems, and enough full-stack fluency to support and enhance our internal application.

Here’s what this role will be responsible for:

• Build, enhance, and co‑own the Python‑based algorithmic engine that drives automated planning, including deterministic logic and constraint‑based components.
• Design, develop, and maintain backend services using FastAPI, ensuring scalable, reliable API interactions with our internal application.
• Work end‑to‑end across architecture, implementation, deployment, and operations within our modern technology ecosystem (EKS, RDS, S3, ElastiCache, Glue, etc.).
• Collaborate closely with engineers, analysts, and planners to translate domain knowledge into robust, maintainable system logic.
• Contribute to the evolution of the platform toward event‑driven patterns using technologies like Kafka.
• Support frontend needs for our internal React application, ensuring seamless integration between FE and BE layers.
• Improve reliability through automated testing, performance tuning, and thoughtful system design.
• Guide as well as learn through pairing, design discussions, and knowledge sharing to help strengthen collective ownership across a strong, team‑first environment.
• Participate in shaping the future direction of an advanced system.
• Operate what you build. You instrument, monitor, and improve your systems in production.

Here’s what we’re looking for:

• Hands‑on experience working with AI tooling (e.g., Claude Code, Cursor, Copilot) beyond casual experimentation.
• Strong software engineering experience with a focus on backend development and Python as the primary language.
• Experience designing and building systems with complex business logic, including deterministic, constraint‑based optimizers, and MIP solvers.
• Hands‑on experience building production‑grade APIs with FastAPI or similar modern frameworks.
• Solid knowledge and experience with relational databases and comfortable working with data across various data systems (PostgreSQL, Snowflake, S3).
• Experience with event‑driven architecture and messaging technologies.
• Working knowledge of cloud environments, containerization, and orchestration (AWS, Docker, Airflow).
• Experience contributing to or designing scalable architecture for internal tools or operational platforms.
• Full‑stack capability with React or another modern FE framework — enough to support and enhance application.
• Strong communication skills and a proactive, collaborative approach to working with engineers, analysts, planners, and product partners.
• Comfort working through ambiguity and contributing clarity through simple, pragmatic design choices.
• A mindset of continuous learning, knowledge sharing, and improving the systems.

Nice to have:

• Bachelor’s or Master’s degree in Computer Science, Engineering or related field.
• Experience in Fulfillment, Logistics, Supply Chain, Production, or related field working with physical goods.

Let’s cut to the cheese, this is why you’ll love it here:

• Box Discount - Amazing discounts on 1 box per week! 75% discount on weekly HelloFresh and Chefs Plate meal kits AND 50% off weekly Factor meal box.
• Health & Wellness - Health & Dental benefits from day 1, a Health Spending Account, unlimited access to the Headspace app to meet your self‑care needs, and 25% discount on GoodLife fitness memberships!
• RRSP Matching - Competitive RRSP matching program offered.
• Vacation & PTO - Generous vacation and PTO to help you create a good work‑life balance.
• Family Benefits - A parental leave top‑up program for expectant parents.
• Growth & Development - We support your career progression and invest in your continued learning through experiences and initiatives owned by our dedicated L&D team.
• Work Hard & Have Fun - From team socials to engaging company days, you’ll have plenty of opportunity to experience the fun!
• Diversity & Inclusion Initiatives - With impactful ERG’s like FreshPride, Women Empowered and LIMES, we are committed to our diversity, equity & inclusion efforts.
• Flexible Hybrid Approach - Offering remote work flexibility, along with the opportunity to interact and collaborate in the office.

HelloFresh Canada uses AI‑integrated technology to help us process and evaluate applications more efficiently. This includes tools that screen and assess candidate qualifications based on the requirements for this role. While these tools assist our workflow, all final selection decisions are made by our hiring team.

This is a posting for an existing vacancy. We are actively seeking to fill this position.

Pay Range: $120,000 — $150,000 CAD