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nesto

Senior Backend Developer - Core AI Platform

Posted Yesterday
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Remote
Hiring Remotely in Canada
Senior level
Remote
Hiring Remotely in Canada
Senior level
Design and build cloud-native backend services powering AI decisioning: configuration/versioning, access control, audit trails, runtime orchestration, APIs, observability, reliability, security, and operational readiness. Collaborate with frontend and ML teams, drive testing and maintainable design, and support Agile planning and iterative releases.
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Join nesto — proudly named Canadian Rocketship 2025*. A Deloitte Fast 50 company evolving alongside Canada’s top tech innovators and disrupting a 2.1 Trillion-dollar mortgage industry at light speed by building the mortgage ecosystem of the future.

BUILD lending technology with the best developers, AI engineers, and mortgage experts in the country. Work on a modern tech stack and a development framework designed to unlock your full potential and accelerate your career.

Why join us
  • Hypergrowth: Deloitte Fast 50 — 3 years in a row
  • Tech community credibility: TechTO Canadian Rocketship 2025*
  • Industry leadership: CLA Lending Company of the Year — 4 consecutive years
  • Talent magnet: CMP Top Mortgage Employer 2025
  • Trusted technology: powering major financial institutions across Canada
  • An entrepreneurial culture built on trust, speed, uncomfortable ambition, being stronger together, and a relentless obsession with our clients.

Who are you

Builders. Problem-solvers. Curious minds. People who move fast, embrace innovation, and believe we’re stronger together. If you trust your skills and want to build real technology that reshapes an entire industry, join us now.


About nesto and Nesto Cloud

nesto is Canada’s leading provider of mortgage technology and financing solutions, managing $73B+ CAD in residential and commercial mortgages, with 1,000+ team members across 12 offices nationwide. You will be working on Nesto Cloud, Canada’s most advanced cloud platform, delivering end-to-end technology solutions for lenders in the digital age.


About the Team

Core AI is building shared backend services that power AI-driven decisioning and workflows across products, with security, auditability, and multi-tenancy as first-class requirements. The platform enables teams to ship faster by providing consistent primitives for configuration, governance, runtime execution, and observability.

What You’ll Be Doing
  • Build core services for configuration and versioning, access control, audit trails, and runtime orchestration.
  • Design robust APIs and integrations with existing product systems, with strong patterns for idempotency, timeouts/retries, and clear error taxonomy.
  • Implement SaaS-grade foundations: observability (logs/metrics/traces), reliability patterns, and secure-by-design practices.
  • Collaborate closely with front-end developers and ML engineers to build and optimize robust, high-performance services and data interfaces.
  • Establish operational readiness: runbooks, dashboards, alerting, and safe rollout/rollback mechanisms.
  • Drive engineering quality through testing strategy, reviews, and maintainable design (modularity, testability, and clear service boundaries).
  • Work in an Agile delivery cadence, contributing to planning, estimation, and iterative release.
Who We’re Looking For
  • Bachelor’s or Master’s degree in Computer Science, Software Engineering, or equivalent practical experience.
  • 5–8+ years of backend experience building production systems.
  • Strong experience in Go and/or Python (or similar) with solid distributed systems fundamentals.
  • Experience designing and operating APIs and services in a cloud-native environment (Docker/Kubernetes), including CI/CD and operational best practices.
  • Strong security mindset and comfort handling sensitive data, including least-privilege access patterns and auditability.
  • Experience working in Agile teams (iterative delivery, cross-functional collaboration).
  • Excellent communication skills and strong cross-functional collaboration.
Nice to Have
  • Experience with workflow orchestration (e.g., Temporal or similar).
  • Experience implementing RBAC/authorization systems and audit/event logging patterns.
  • Familiarity with observability standards (OpenTelemetry) and production monitoring tooling.
The Reward
  • The A-Team: Work alongside high-performing talent in the industry.
  • Accelerated Growth: The slope of your learning curve here will be vertical. You will touch more production systems in one year than you would in five years at a bank.
  • Top-Tier Coverage: Premium benefits plan fully paid by nesto, including comprehensive insurance and unlimited access to telemedicine and mental health services for you and your family.
  • Rest & Recharge: 4 weeks of vacation to ensure you stay at peak performance.
  • Best-in-Class Tools: Access to the resources and tech you need to execute without friction.
  • Working framework: The environment that makes you productive and enables teamwork (Hybrid model).
Diversity and Inclusion

At nesto, we believe that creativity and collaboration are the result of a diverse team. We are committed to fostering a culture of diversity, equity, inclusion, and belonging, and we strongly encourage women, people of color, LGBTQIA+ individuals, and individuals with disabilities to apply. We are committed to creating a workplace that is inclusive and welcoming to all.


Top Skills

Ci/Cd
Docker
Go
Kubernetes
Opentelemetry
Python
Rbac
Temporal

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