java backend engineer jobs in Toronto

OX Security is securing the AI-driven SDLC from prompt to production. We're building the next generation of security technology for a world where AI is changing how software is built, deployed, and attacked. We're looking for a strong Senior Backend Engineer to join VIBESEC, the team building our AI security products. This is one of the most exciting places...

DescriptionWe are hiring a Senior Backend Engineer for its Customer Focus Group (CFG) — a technical team that bridges engineering and the commercial side of the product. CFG members handle development, architecture, product, and direct customer interaction: translating customer needs into the product, building new features, and resolving pressing technical...

Why HarveyAt Harvey, we’re transforming how legal and professional services operate. By combining frontier agentic AI, an enterprise-grade platform, and deep domain expertise, we’re reshaping how critical knowledge work gets done for decades to come.This is a rare chance to help build a generational company at a true inflection point. We have strong...

Full-time · Toronto, Canada | Hybrid or remote About Kora Kora is a Toronto-based, VC-backed startup building an intelligent assistant for busy families. Our product combines a mobile app with a dedicated home display to help families manage schedules, chores, shopping, meals, and everyday responsibilities. We are building an assistant that understands...

From Fivetran’s founding until now, our mission has remained the same: to make access to data as simple and reliable as electricity. With Fivetran, customer data arrives in their warehouses, canonical and ready to query, with no engineering or maintenance required. We’re proud that more organizations continue to leverage our technology every day to...

Reports to: Director of Software Type: Full-Time Location: Ottawa or Toronto Location AuraNet is Dominion Dynamics' mesh networking platform for autonomous assets working in contested and disconnected environments. It has to move data securely and in real time over links that aren't conventional wired networks, where bandwidth is scarce, connections drop,...

About the team + roleWe are building an elite team, applying frontier technologies to the world’s biggest financial problems. We’re looking for bold thinkers. Sharp problem-solvers. Builders who are wired to make an impact. Robinhood isn’t a place for complacency, it’s where ambitious people do the best work of their careers. We’re a...

Own high-performance backend systems at Canals, applying scalability, reliability, and architecture skills in a remote-first company. Canals serves wholesale distributors with software that automates essential business workflows. This senior backend engineering position focuses on complex systems and meaningful product features as the customer base expands....

Lead Python backend development for ACV’s VIN Decoder platform, working with AWS, Postgres, GCP BigQuery, and Redis. Standard Eastern Time hours support collaboration.This Senior Software Developer role sits within Platform Engineering and addresses complex data engineering challenges. You will shape architecture, build services, and support reliable...

Strengthen Stripe Radar with backend engineering and distributed systems expertise, building low-latency services that stop fraud and abuse at scale. This software engineering role focuses on products and infrastructure for businesses using Radar. You will work across backend services, enterprise APIs, and shared platforms. You will also bring new signals,...

Cohere is hiring a Backend Engineer to optimize model inference systems. You will build low-latency serving infrastructure, implement batching strategies, and develop the backend services that power Cohere's enterprise API. Requirements - 5+ years of backend engineering experience - Strong proficiency in Go, Rust, or C++ - Experience with high-throughput,...

Apply backend engineering and modular software skills to evaluate AI agents remotely through flexible freelance work with Outlier.Outlier collaborates with leading AI organizations to train large language models. This freelance opportunity suits engineers with at least two years of backend, AI automation, or complex systems integration experience....

CIBC is seeking a Backend Developer with 6–8 years of experience to design, build, and maintain scalable Java and GoLang services. You'll contribute to enterprise‑scale cloud projects, participate in architecture discussions, and mentor peers as a SME while working in a hybrid model with on-site and remote days. You’ll collaborate across teams,...

Design, develop, and maintain high-quality, maintainable Java applications using clean code principles, SOLID principles, and established design patterns.Build modular, reusable, and testable Java applications and RESTful APIs.Develop microservices using frameworks such as Spring and Spring Boot.Apply strong knowledge of core Java,...

Build secure Java services in Toronto for digital identity and fraud prevention. Apply REST APIs, data pipelines, and observability across distributed systems. emergiTEL seeks a Software Engineer for a permanent client role in digital identity, cybersecurity, and telecommunications. You will support fraud-prevention and identity-verification APIs throughout...

About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world’s largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work...

At Swoop, our mission is simple: Improving patient outcomes. As a market leader in AI-driven, data-powered, and privacy-compliant healthcare engagement, we connect the signals that drive earlier diagnosis, better treatment decisions, and sustained adherence.Our integrated, privacy-safe platform, enables life sciences companies to drive measurable patient and...

EvenUp is on a mission to close the justice gap using technology and AI. We empower personal injury lawyers and victims to get the justice they deserve. Our products enable law firms to secure faster settlements, higher payouts, and better outcomes for victims injured through no fault of their own in vehicle collisions, accidents, natural disasters, and...

("Cracked engineers only": Tyce is looking for backend engineers who ship fast and own outcomes.)About UsWe're solving one of the largest problems in the physical world: public infrastructure that's too slow and too expensive to build. Construction is a $17 trillion global industry, and it runs on human expertise that doesn't scale, so we're building the AI...

We are looking for an experienced Backend Platform Engineer to build, maintain, and scale the infrastructure powering an innovative AI-enabled product designed for children. In this role, you will take end-to-end ownership of the backend ecosystem, including APIs, real-time connectivity, job processing pipelines, and cloud infrastructure. You will ensure...