backend engineer ruby

LayerZero The Future is Omnichain. Founded in 2021, LayerZero’s vision is to create a community of cross-chain developers, building dApps that are no longer constrained by individual blockchain capabilities. With LayerZero's simple, generic messaging protocol, builders will develop cross-chain dApps designed to unify the power of individual...

Life as an Engineer at EvenUp 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,...

Shape event-driven backend architecture with Python, Kafka, and Kubernetes at BoostSecurity in Montreal, QC. Work alongside AI coding agents.As a Senior Backend Developer, you will own architecture, judgment, and quality across BoostSecurity’s software supply chain platform. Build Python microservices with Kafka, MariaDB, GraphQL, AWS, and Kubernetes....

Build AI underwriting systems with Python and backend expertise at nesto, in a remote-first role open across Canada. Shape production lending technology. As a Senior Applied AI Engineer, you will lead major projects for Maestro, nesto’s AI underwriting and lending engine. Apply LLMs, retrieval-augmented generation, structured extraction, and strong API...

About d1g1t d1g1t is an institutional-grade enterprise wealth management platform built for financial advisors, multi‑family offices, broker‑dealers, and bank advisor networks. The platform replaces fragmented legacy systems with a unified solution for portfolio management, advanced analytics, risk management, reporting, and operational workflows across...

Build backend applications and data pipelines as a Staff Software Engineer at Marqeta, working remotely from Ontario or British Columbia.The Program Experience team is scaling Marqeta’s Customer Migration Platform. This experienced engineering role focuses on Java and Python, scalable APIs, cloud native applications, and data integration. You will support...

Join Kaseya as a Platform Backend Engineer to innovate our core services using Go or Rust. Focus on event-driven systems and multi-tenant security in a dynamic environment. In this hands-on role, you’ll design backend services like API gateways and event routing while ensuring production reliability. Ideal candidates will utilize their experience in...

Lead the design and development of innovative backend systems at Swoop, enhancing healthcare outcomes through technology. This hybrid role in Toronto requires expertise in building scalable APIs and services. As a Senior Backend Engineer, you will architect pivotal technology for multiple web products at Swoop, focusing on NimbleRx. Collaborate with top...

Manulife is seeking a Senior Mobile Software Engineer to design, build, and deliver high-quality mobile and backend solutions for Retirement customers. You will work across the full stack, developing React Native apps and NestJS services, while shaping architecture and engineering standards. You will collaborate with Product Owners, UX Designers, and...

Earn Up To $50/hr as an OpenClaw Agent BuilderShape the future of autonomous agents like OpenClaw. Freelance, remote, up to $50 USD/hr. Weekly payments.Trusted by 10,000+ software engineers worldwideMIN EXP REQUIRED2+ yearsPAY RATEUp to $50 USD/hrEarn Up To $50 USD/hr— Plus Additional IncentivesRates vary based on expertise and project requirements. Paid...

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...

Lead backend strategy for Splunk Enterprise Security, using Python or Go across cloud and on-premises deployments. Shape scalable, secure platforms. This senior engineering role guides multiple teams and backend product areas. You will develop distributed systems, databases, and data-processing workflows while partnering with Product Management, Architects,...

Build scalable Java backend services remotely for Just Eat Takeaway.com from Alberta, Manitoba, or Ontario. Apply strong system design expertise. As a Senior Java Developer, you will support the Logistics Areas and Fees team. You will architect, develop, and operate distributed systems for delivery calculations. The work includes Java 21, REST APIs, message...

Fleetworthy seeks a Senior Backend Developer to innovate fleet readiness technology through effective API design and robust database management, embracing a data-driven approach. As a Senior Backend Developer at Fleetworthy, you will leverage more than 4 years of backend experience to build RESTful and GraphQL APIs while managing PostgreSQL databases. Your...

Lead the design and development of innovative backend systems at Swoop, enhancing healthcare outcomes through technology. This hybrid role in Toronto requires expertise in building scalable APIs and services. As a Senior Backend Engineer, you will architect pivotal technology for multiple web products at Swoop, focusing on NimbleRx. Collaborate with top...

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...

Lead the design and development of innovative backend systems at Swoop, enhancing healthcare outcomes through technology. This hybrid role in Toronto requires expertise in building scalable APIs and services. As a Senior Backend Engineer, you will architect pivotal technology for multiple web products at Swoop, focusing on NimbleRx. Collaborate with top...

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 Prenuvo, we are on a mission to flip the paradigm from reactive “sick-care” to proactive health care. Our unique integrated stack of optimized hardware, software, and increasingly AI, coupled with the patient-centric experience across our domestic and global clinics, have allowed us to lead the change against “we caught it too late again”. We're...

Build scalable APIs from Kimberley as a Senior Backend Software Engineer, using RESTful design, GraphQL, and microservices architecture expertise. This senior role focuses on backend development for core products and services. You will design robust APIs, manage data efficiently, and write maintainable code. Collaboration with frontend developers, product...