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Canada UK Unlimited PTO

  • Develop, ship, and maintain features and improvements for Agentic Tools across the GitLab monolith backend in a secure, well-tested, and performant way.
  • Collaborate with Product Management, UX, frontend, backend, and AI specialists to refine requirements and deliver high-quality, iterative product enhancements.
  • Design, implement, and review GraphQL, REST APIs and related backend logic, ensuring reliability, scalability, and clear contracts with frontend clients.

Ruby On Rails REST APIs GraphQL PostgreSQL Python

20 jobs similar to Backend Engineer (Ruby), AI Engineering: Duo Agent Platform Tools

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Canada UK Unlimited PTO

  • Develop, ship, and maintain features for Agentic Tools across the GitLab monolith backend in a secure, well-tested manner.
  • Collaborate with Product Management, UX, and AI specialists to refine requirements and deliver high-quality product enhancements.
  • Design and review GraphQL and REST APIs, ensuring reliability, scalability, and clear contracts with frontend clients.

GitLab is the intelligent orchestration platform for DevSecOps, enabling organizations to increase developer productivity and accelerate digital transformation. With over 50 million users and a high-performance culture driven by values and continuous knowledge exchange, GitLab empowers team members to reach their full potential.

LATAM Europe

  • Design, develop, and maintain the core backend architecture, ensuring it is scalable, secure, and optimized for performance.
  • Work closely with front-end developers, product managers, and UX/UI teams to build seamless backend solutions aligned with product requirements.
  • Monitor and improve backend system reliability, performance, and security, implementing solutions for high-volume request handling.

Piktochart is a web-based graphic design platform that empowers users to create professional-grade visuals, including infographics, presentations, and videos, without needing extensive design experience. Founded in 2011, Piktochart has grown into a global team of developers, designers, marketers, and support staff dedicated to building the best visual storytelling tool on the internet.

Global

  • Build and ship features across the Champion platform, improving developer experience and maintaining agent infrastructure.
  • Support Applied AI engineers in building, deploying, and operating Champions, reviewing agent implementations and contributing to engineering guides.
  • Design and build Champion agents for business-unit use cases, including writing system prompts and configuring deployment setups.

Redzone is the #1 Connected Workforce Solution for manufacturers, improving plant efficiency and empowering front-line workers. The company combines strong leadership, manufacturing expertise, and an incredible technology team to create great products and customer outcomes.

US

  • Design, build, and iterate on AI agents that interact with data across BigCommerce and partner ecosystems to drive automation.
  • Develop and integrate AI assistant features into the BigCommerce control panel for natural language queries and actions.
  • Collaborate with product designers and NLP experts to deliver intuitive conversational experiences and proof-of-concept solutions.

Commerce empowers businesses to innovate and grow with an open, AI-driven commerce ecosystem, parent company of BigCommerce, Feedonomics, and Makeswift. We are a team of bold builders and technical trailblazers shaping the future of commerce, with a culture that values collaboration and innovation.

Netherlands 4w PTO

  • Build and scale high-performance backend systems using Ruby on Rails and modern technologies.
  • Collaborate with product managers and cross-functional teams to deliver impactful features.
  • Influence architecture, technical strategy, and engineering practices in a fully remote environment.

Our partner company builds and scales AI-powered products used by millions worldwide. It is a fast-growing technology environment with a fully remote, autonomous culture focused on speed, quality, and continuous innovation.

United States Unlimited PTO

  • Design and build scalable backend systems powering AI agents in real-time enterprise environments.
  • Develop agent orchestration frameworks and low-latency inference pipelines integrating LLMs and SLMs.
  • Build robust APIs and work with cross-functional teams to productionize agentic AI at scale.

Level AI is an AI-native platform that helps enterprises transform contact centers into engines of customer intelligence and operational efficiency. The company is a Series C startup backed by Battery Ventures and ENIAC, based in Mountain View, California, with a globally distributed team.

Brazil

  • Build and expand a large-scale healthcare data platform and member management solution.
  • Design, develop, and maintain high-performance backend services and APIs.
  • Mentor junior and mid-level engineers through technical guidance and code reviews.

Ubiminds is a GPTW-certified, people-first company that partners with American software product companies to scale their development teams. They connect Brazil’s top 5% talent with innovative U.S. companies through staff augmentation and employer-of-record services.

US

  • Design and build a next-generation reliability platform for Affirm's production systems, blending distributed systems engineering with AI-assisted development.
  • Create AI agents and a centralized command center to assist with incident triage, root-cause analysis, and unified system health visualization.
  • Own projects end-to-end, from requirements to rollout, collaborating with partner teams to build powerful, simple solutions for developers.

Affirm is reinventing credit to make it more honest and friendly, offering consumers the flexibility to buy now and pay later without hidden fees. The company is a remote-first organization with a strong focus on people-first values and inclusive benefits.

US Canada

  • Ship AI to production by building tool-using LLM agents for grant discovery and drafting, with robust evaluation and observability.
  • Build trustworthy backends with high-quality, tested code, data pipelines, and reliability practices like alerts and incident response.
  • Collaborate with Product, Design, and GTM to scope features, run experiments, and raise engineering standards through clear code and reviews.

Instrumentl is a profitable, hypergrowth, YC-backed SaaS platform building the operating system for grant-funded organizations. More than 5,500 nonprofits use Instrumentl to discover, track, and win grant funding, and the company has grown over 40% year over year.

US Unlimited PTO

  • Lead a pod of 4+ engineers, owning growth, performance, and roadmap, while championing AI-native engineering practices.
  • Drive technical direction and execution for broadly scoped initiatives, ensuring high quality and pragmatic trade-offs.
  • Embrace AI-enabled tools like Claude Code to coach your team and set a hands-on example for effective adoption.

Pathstream reshapes frontline employee careers through enterprise partnerships, transforming teams from transactional to strategic. They are a tight-knit, mission-driven team of ~60 employees scaling their solution across the United States.

Europe

  • Own and evolve data infrastructure including Supabase, n8n workflows, HubSpot integrations, and pipelines connecting external platforms.
  • Take technical ownership of the content factory: tooling, automation pipelines, and agent orchestration for scalable production.
  • Reduce manual overhead by building automations and agent workflows that replace repetitive processes.

Platform Engineering is home to the world's largest community of platform engineers, connecting thousands of professionals through events like PlatformCon with over 35,000 participants annually. The team fosters a low-ego, async culture and operates fully remote across Europe.

LATAM Uruguay

  • Design, develop, and deploy scalable AI solutions using RAG, agentic frameworks, and MLOps.
  • Collaborate cross-functionally on cutting-edge projects integrating tools like LangChain, CrewAI, and Google ADK.
  • Apply advanced prompt engineering and monitor AI application performance to ensure robust solutions.

Blend is a premier AI services provider that co-creates meaningful impact for clients through data science, AI, technology, and people. The company fosters a collaborative culture with opportunities for learning and growth across a diverse team.

US

  • Lead technical architecture and engineering standards across customer-facing and operational systems.
  • Champion AI-assisted development, establishing best practices for LLMs in coding, testing, and workflows.
  • Mentor engineers and drive engineering excellence through code quality, CI/CD, and operational reliability.

Koala Health aims to make managing your pet’s health simple and delightful, offering a pharmacy service for medications and supplements delivered in pre-sorted pouches. The company fosters a remote-first culture built on flexibility and trust, with a supportive, close-knit team that celebrates wins and learns fast.

Global

  • Build and maintain agentic systems collecting and processing signals from social platforms, on-chain data, and ads ecosystems.
  • Design pipelines to ingest from external APIs, enrich data, and build semantic layers for both humans and AI agents.
  • Build full-stack applications and dashboards making intelligence accessible across client accounts.

Serotonin is a go-to-market firm for transformative technologies, specializing in marketing, strategy, recruiting, and legal services. With a global team of 90 across 15 countries, they have supported over 300 clients since 2020, offering end-to-end solutions across all major marketing channels.

Canada US Unlimited PTO

  • Design and maintain scalable, secure software architectures aligned with business goals, ensuring robust and reliable systems.
  • Introduce and implement best practices around object-oriented design, domain-driven design, and microservices.
  • Use AI to streamline processes, reduce friction, and give time back to developers for meaningful work.

ZayZoon builds a financial empowerment platform helping businesses improve employee financial wellness through services like earned wage access. Recognized for growth in Deloitte's Technology Fast 50 and Fast 500, they are a remote-first company with a Series B funding of nearly $50 million USD.

India

  • Lead the technical architecture and evolution of core AI-powered application-building services, ensuring scalability and reliability.
  • Design and build distributed backend systems using Go, Node.js, PostgreSQL, and cloud technologies like Cloudflare Workers.
  • Implement AI safety mechanisms, mentor engineers, and collaborate cross-functionally to drive technical excellence.

Jobgether is an AI-powered job matching platform that connects candidates with hiring companies. They use automated systems to review applications and share shortlists, fostering an inclusive and efficient recruitment process.

US Unlimited PTO 16w maternity 16w paternity

  • Design, build, and deploy AI-powered solutions connecting Remote’s platform to customer systems and workflows.
  • Work at the frontier of practical AI, shipping reliable, observable, and secure systems in production.
  • Own customer outcomes from discovery through production rollout with high autonomy and direct influence on product roadmap.

Remote is a global HR platform that helps businesses recruit, pay, and manage international teams compliantly. The company fosters a future-focused, async culture with team members across 6 continents and emphasizes innovation, automation, and AI.

Canada

  • Design and implement multi-agent state machines using LangGraph and LangChain for autonomous decision-making.
  • Build production-grade RAG pipelines on AWS with dual-engine vector search and serverless ingestion.
  • Architect secure multi-tenant AI systems with RBAC, PII redaction, and HITL guardrails.

Novara provides safety and operational risk management software that empowers organizations to identify and resolve issues before they become incidents. As a Providence Equity portfolio company, we are a dedicated team fostering innovation and collaboration in a remote-first environment.

Canada

  • Build and ship AI agents, APIs, and applications on Affirm's internal platform, owning the full lifecycle from architecture to production.
  • Turn messy business requirements from People Operations stakeholders into production systems, integrating with tools like Workday and Notion.
  • Design reliability infrastructure for multi-model LLM services, including structured output validation and quality controls.

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. The People Tech & Analytics team builds and owns the data, AI, and technology infrastructure for Affirm's People function, running like a product engineering group embedded in HR.

Global

  • Lead a team of 4–8 full-stack engineers as a player/coach, spending ~40% of time coding and in agent pipelines.
  • Design and operate Claude agent teams using multi-agent pipelines to parallelize engineering work and increase team leverage.
  • Own delivery end to end, set technical standards, and build the systems that make the team scale.

LumiMeds is a fast-growing U.S.-based telehealth startup focused on weight management and long-term metabolic health. As a remote-first, globally distributed early-stage company, they value clarity, accountability, and high ownership from every team member.