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20 jobs similar to Senior Full Stack Engineer (Rails / React)

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  • Own full features—definition, design, development, and deployment
  • Prototype fast and learn through doing (OODA loop is how we roll)
  • Architect, evolve, and support core infrastructure across the frontend and backend

Mighty Networks is a pioneering community platform that’s delivered $500M in community earnings to their customers in the past year. They bring people together with private or paid communities, courses, and events, so that they can generate real outcomes for their members.

$120,000–$140,000/yr
US

  • Implement new features, improve user experiences, and fix bugs in a mature SaaS application.
  • Review PRs to educate others of best practices, pair program with people who are stuck on a problem, ensure the team is following agreed upon standards.
  • Work closely with the Implementations Team to turn customer needs/pain points into actionable work with technical designs.

Versapay turns accounts receivable (AR) into a competitive advantage. With over 10,000 customers and 5M+ companies transacting on the platform, Versapay processes over 110M transactions and $257B annually.

South Africa 5w PTO

  • Design, build, and ship meaningful fullstack features every week.
  • Act as an AI engineer on designated projects, building AI-powered features.
  • Debug production issues, maintain a stable marketplace, and advocate for quality, performance, and security.

OfferZen connects South African tech talent to the right teams. They value unique and diverse approaches and ensure they create opportunities to share and learn from each other, with a focus on building a connected tribe.

Global

  • Design, build, and maintain robust full stack features across backend and frontend layers, taking end-to-end ownership of what you ship.
  • Work primarily with Ruby on Rails on the backend, with strong consideration given to equivalent experience in Python, Rust, or Go.
  • Actively use AI tools and techniques as part of your engineering workflow, from code generation and review to broader problem-solving and productivity.

Smart Working believes your job should not only look right on paper but also feel right every day. They aim to break down geographic barriers and connect skilled professionals with outstanding global teams and products for full-time, long-term roles.

US Canada Mexico 4w PTO 16w maternity 4w paternity

  • Research opportunities and run experiments.
  • Craft seamless user experiences.
  • Build features that drive user adoption of Fleetio’s product.

Fleetio is a modern software platform that helps thousands of organizations worldwide manage their fleet operations. They are on an exciting trajectory as a company, and transportation technology is a hot market where they're leading the charge.

$150,000–$180,000/yr
US

  • Collaborate with our product teams to implement data exploration and visualization features in our client application.
  • Scale our application, associated APIs, and backend processes related to our automated reporting tools.
  • Work with our backend teams to integrate performance enhancements and new data into our platform.

EDO is the TV outcomes company, and its leading measurement platform connects convergent TV airings to ad-driven consumer behaviors. They are headquartered in New York City and Los Angeles with an office space in San Francisco and recognize the benefits of hybrid working.

$140,000–$170,000/yr
US Unlimited PTO

  • Build and maintain customer-facing features across our web and mobile platforms.
  • Partner closely with product and design to understand requirements, shape solutions, and deliver high-impact features.
  • Own projects end-to-end, from technical design through implementation, testing, and release.

Misfits Market is a mission-driven, high-growth startup dedicated to reducing food waste and making shopping for sustainable, high-quality groceries easier and more affordable. Their passionate and motivated team of problem solvers helps save an average of 500,000 pounds of food per week from waste.

$87,931–$95,239/yr
Canada 3w PTO

  • Frontend architecture — React component patterns, state management strategy, styling conventions, and build tooling within a Rails monolith
  • Component library (LDS) — maintaining and extending our internal design system built on Supernova design tokens and SCSS
  • Migration strategy — incrementally moving legacy code (Reflux stores, createReactClass, jQuery) to modern React (hooks, Context, functional components)

Lumerate helps customers achieve the full picture of their industries by gathering intelligence and delivering it through innovative software interfaces. They strive to achieve personal fulfillment and learning. They are a bootstrapped and profitable Canadian tech company.

Europe

  • Design, develop, and version high-quality web and mobile applications.
  • Collaborate with product teams to understand feature requirements and translate them into technical solutions.
  • Be accountable for an area of the application, its delivery, production-level quality, and its effective presentation to stakeholders.

OAK’S LAB is a product development partner specializing in custom web and mobile application development. With Silicon Valley founders and top-tier European tech talent, the company operates from Prague and has successfully delivered over 65 software products. The company has 85+ team members and takes an AI-first approach, utilizing AI on almost every project, with remote AI agents to push the boundaries of what’s possible in product development.

US 16w maternity 8w paternity

  • Design, build, and maintain scalable full-stack solutions for internal and external users.
  • Collaborate with product and business teams to deliver customer value.
  • Write clean, maintainable, and efficient code in Ruby on Rails and other modern programming languages.

Fuze Health is dedicated to helping its partners evolve and modernize to meet emerging patient and marketplace needs. Their foundation is built upon the strategic combination of several proven, technology-powered innovators in the digital health, diagnostics, and pharmacy sectors, uniting industry leaders to create a distinctive force in healthcare.

US

  • Design, build, and deploy full-stack solutions for state governments and public sector partners.
  • Collaborate with customer delivery leads, engineers, and UX designers to ensure successful deployments.
  • Translate customer requirements into technical architectures and production-ready systems.

SpruceID builds privacy-preserving, standards-based digital identity and credentialing solutions. They give individuals control of their information while enabling governments and enterprises to deliver secure, interoperable services.

US

  • Build a high performing team by hiring and nurturing engineering talent.
  • Drive technical solutioning and building roadmaps with strong technical leadership.
  • Set aggressive and clear goals and remove all roadblocks for the team to achieve them.

Aledade empowers primary care physicians with technology to keep their patients healthy and prevent unnecessary hospitalizations. They are focused on saving lives and improving mental and physical health for millions of people.

Europe

  • Develop a strong understanding of Workera's AI-powered platform, customers, and business model.
  • Actively lead and deliver your first full project, owning backend architecture, build, and rollout end-to-end.
  • Architect and own backend systems that are robust, performant, and built to scale.

Workera is redefining how enterprises understand, develop, and mobilize talent in the age of AI. The company is a fast-growing, Series B Silicon Valley company building AI-native skill assessments for the world’s largest organizations, with clients including Samsung, Siemens Energy, and the U.S. Air Force.

Global 4w PTO

  • Interacting with the Product Manager to review project specs
  • Preparing integration plans, break-downs, and estimations
  • Hands-on code implementation, PRs, code reviews, testing, etc.

EverAI is building the future of AI companionship, creating new ways for people to connect with AI, boasting 50 million users in 2 years. They're an enthusiastic and hardworking team of approximately 75 people, with a founding team that has strong entrepreneurial experience building and scaling web products.

US

  • Design and implement frontend application features using React Native.
  • Build and maintain automated tests and CI/CD pipelines.
  • Troubleshoot issues across mobile and TV platforms.

Lifeway is dedicated to making disciples of Jesus Christ through creation, storytelling, and problem-solving. They foster a strong Work from Anywhere culture with autonomy and flexibility, emphasizing mission and values.

Global

  • Own full features—definition, design, development, and deployment
  • Prototype fast and learn through doing (OODA loop is how we roll)
  • Architect, evolve, and support core components of the frontend design system

Mighty Networks helps people and brands build communities, online courses, memberships, challenges, and events. Through its advanced technology, called people magic, Mighty helps the members of those networks build relationships with each other. They have produced the most $1M communities and helped its Hosts earn over $500M.

$125,000–$162,000/yr
US

  • Application and infrastructure support for customer environments.
  • Collaborate across software products globally for product releases.
  • Build new features and find creative solutions to complex problems.

Coupa provides a total spend management platform for businesses. Coupa AI is informed by trillions of dollars of direct and indirect spend data across a global network of 10M+ buyers and suppliers, empowering smarter, more profitable business decisions.

US

  • Design and build scalable, performant, secure, and highly available systems.
  • Write clean, modular and maintainable code with unit test coverage.
  • Implement strategies for standardizing design patterns to accelerate development velocity across the team.

VERSANT is a leading force in news, sports and entertainment - home to iconic and trusted brands that inspire, inform, and delight audiences. As an independent, publicly traded company, VERSANT brings together powerhouse cable networks with dynamic digital and direct-to-consumer brands.

$4,386–$4,894/mo
Europe

  • Design high-performance, distributed, low-latency systems
  • Architect, create, and deliver new features and functionality
  • Analyze and improve efficiency, scalability, and stability of servers and processes

OpenX is focused on unleashing the full economic potential of digital media companies. They build digital advertising markets and technologies designed to deliver optimal value to publishers and advertisers. OpenX is a team that is uniquely experienced in designing and operating high-scale ad marketplaces.

US Unlimited PTO

  • Grow, build, and lead a world-class full-stack engineering team delivering SaaS products at scale
  • Drive high-level architecture decisions and own their execution across the stack
  • Partner with data engineering and data science teams to design and ship integrated ML Ops workflows and AI-powered product features

Gradient AI is revolutionizing Group Health and P&C insurance with AI-powered solutions that help insurers predict risk more accurately, improve profitability, and automate underwriting and claims. The company has grown rapidly since its founding in 2018 and is backed by $56M in Series C funding.