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US Unlimited PTO

  • Own features end-to-end—data model, Rails API, and front end—in a fast-paced agile environment.
  • Build product surfaces on top of LLMs and agents: ingestion, structured data, and UIs for reviewing and verifying AI-generated output.
  • Partner with a team lead or AI Engineer to take greenfield problems from ambiguous idea to shipped feature.

Ruby On Rails JavaScript React MySQL REST APIs

20 jobs similar to Senior Software Engineer - Applications

Jobs ranked by similarity.

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.

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.

GitLab is the intelligent orchestration platform for DevSecOps, enabling organizations to increase developer productivity and improve operational efficiency. More than 50 million registered users and more than 50% of the Fortune 100 trust GitLab, and the company embraces AI as a core productivity multiplier with a high-performance culture driven by values and continuous knowledge exchange.

Global Unlimited PTO

  • Design and build the trigger system linking GitLab events to AI-powered Duo Flows.
  • Architect for high availability and throughput in a multi-service environment.
  • Collaborate cross-departmentally to integrate triggers with the broader agent ecosystem.

GitLab is an intelligent orchestration platform for DevSecOps, enabling organizations to increase developer productivity and improve operational efficiency. With more than 50 million registered users and over 50% of the Fortune 100 as customers, GitLab fosters a high-performance, values-driven culture where every voice is valued and innovation flourishes.

Global 4w PTO

  • Collaborate with the Product Manager to review specs and prepare integration plans, breakdowns, and estimations.
  • Drive hands-on code implementation, PRs, code reviews, and testing while working with Ruby on Rails and modern web technologies.
  • Enjoy autonomy to run experiments and bring new ideas to the table, directly reporting to the Tech Lead and co-founder.

EverAI builds the world's largest AI companionship platform, redefining how people connect with AI through its proprietary moderation system, EverGuard. The team consists of about 75 passionate, hardworking individuals led by founders with strong entrepreneurial experience scaling web products from 0 to IPO.

Canada Unlimited PTO

  • Design, develop, test, and maintain internal integrations, tools, and solutions to enhance efficiency across Fullscript’s technical stack.
  • Build scalable applications, APIs, and integrations to support business growth and streamline operations.
  • Take ownership of features from planning to deployment, mentor peers, and advocate for high-quality, maintainable code.

Fullscript is a health technology company that powers a platform for practitioners to access supplements and tools for patient care. With over 125,000 practitioners and 10 million patients, the company fosters a collaborative, people-first culture focused on impact.

US Unlimited PTO

  • Build interactive charts and dashboards for visualizing occupancy and revenue data.
  • Redesign core workflows to simplify revenue management for non-technical users.
  • Architect front-end with state management and performance optimization for a snappy app.

Wheelhouse is a fintech platform enabling short and mid-length stay providers to earn 20% more from rental properties. The company is remote-first, has low churn, rapidly growing revenue, and a collaborative, transparent culture.

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

  • Collaborate with Product Managers, Designers, and Data Ops to research, plan, and build features that drive user adoption.
  • Create user experiences and run experiments to increase engagement from trial users.
  • Build systems for customized onboarding and improve feature areas to reduce churn.

Fleetio is a modern software platform that helps thousands of organizations worldwide manage their fleet operations. The company has raised $450M in Series D funding and is on an exciting trajectory with a strong engineering culture.

$160,000–$183,000/yr
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 Unlimited PTO

  • Own and drive the quality, reliability, and evolution of AI systems in production across multiple products.
  • Design and orchestrate agentic AI workflows, tool-based systems, and multi-step LLM chains with clean tool contracts.
  • Manage production prompt systems, run A/B experiments, and monitor AI system metrics using Langfuse and other observability tools.

Ruby Labs is a leading tech company that creates and operates innovative consumer products across health, education, and entertainment. The company has a fast-growing, ambitious team with a high-performance culture.

$81,000–$135,000/yr
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.

Philippines

  • Participate in agile ceremonies and own features from design to deployment across a full stack.
  • Build backend with Ruby (Rails), frontend with Angular and TypeScript, and optimize MySQL databases.
  • Mentor teammates, lead code reviews, leverage AI tools, and maintain high quality without a dedicated QA team.

Sharesource is a BCorp company that democratises opportunities for individuals from developing countries by scaling teams for Australian and Canadian businesses. While employee count is not specified, the culture emphasizes diversity, inclusion, proactive thinking, and a supportive environment.

$204,000–$226,000/yr
US Unlimited PTO

  • Set technical direction across multiple domains, owning complex work like greenfield service design and large refactors while producing clear documentation.
  • Act as a senior technical authority for security and compliance, partnering on SOC2, vulnerability management, and threat modeling.
  • Lead AI-native engineering practices, designing agentic workflows and coaching engineers to collaborate effectively with AI systems.

Pathstream reshapes how frontline employees and managers excel in their careers through enterprise partnerships, transforming teams from transactional to strategic. The company is a tight-knit, mission-driven team of ~60 employees scaling solutions to improve productivity and retention.

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.

  • Design and build core fullstack systems that power Surge's platform.
  • Own frontend product decisions and backend architecture for high-impact workflows.
  • Build scalable systems for data collection, labeling, and evaluation.

Surge AI builds a platform that powers advanced AI models in partnership with companies like Anthropic, Google, Microsoft, and Meta. They are a profitable, small dynamic team with a focus on human intelligence and creativity in AI data.

US 12w maternity 12w paternity

  • Manage the technical aspects of feature development for the Portal, including UX/UI and API work.
  • Develop high-quality software, designs, and architecture, setting the standard for team excellence.
  • Collaborate with Growth teams to build and optimize data-driven features, experiments, and user flows.

We were founded in 2015 by former NSA cyber operators to make enterprise-grade cybersecurity accessible to businesses of all sizes. We now secure over 5 million endpoints and 11 million identities worldwide with a remote-first team and a 24/7 human-led SOC.

US Unlimited PTO

  • Design, build, and test APIs and services that power RoadieXD, Roadie's cross-dock solution.
  • Develop internal and customer-facing tools in React to enable cross-dock operations to scale efficiently.
  • Partner with Engineering, Product, and Operations to solve complex logistics challenges and influence technical direction.

Roadie is a logistics and delivery platform that helps businesses manage complex retail delivery needs. A UPS company with over 310,000 independent drivers nationwide, it focuses on scalability and flexibility in a fast-paced environment.

US

  • Build and maintain vertical slices of business capability including React frontends, Node services, Prisma schemas, and AWS infrastructure.
  • Own the user experience for complex, policy-laden workflows, ensuring multi-step wizards and data-dense interfaces are simple and intuitive.
  • Operate in an always-green main branch environment, shipping small, reviewable changes to stakeholders constantly.

Redhorse Corporation is a solution-driven company delivering data insights and technology solutions to customers with missions critical to U.S. national interests. They are a team of thoughtful, skilled professionals who thrive as trusted partners building technology-agnostic solutions for difficult and important mission sets.

$180,000–$200,000/yr
US

  • Build across the stack, owning fullstack features end to end from design through release.
  • Collaborate cross-functionally and take ownership in a fast-moving, meeting-light environment.
  • Use AI tools as a force multiplier and help shape our AI-native development practices.

Archive builds the technology that powers branded resale for some of the world's most beloved companies, including Lululemon, The North Face, New Balance, Dr. Martens, Peloton, and 50+ others. We're a small, low-ego team with high agency, backed by leading venture capital firms, and committed to changing consumer behavior for the better.

$143,200–$243,400/yr
North America Unlimited PTO

  • You will own the end-to-end technical relationship with enterprise customers, translating business challenges into AI solutions.
  • You will design and build secure integrations between the Moveworks Platform and customer systems like ServiceNow, Workday, and Jira.
  • You will serve as a trusted technical advisor, helping customers develop their Agentic AI roadmap and upskilling their teams.

ServiceNow is the AI control tower for business reinvention, helping 85% of the Fortune 500 work smarter. With a culture of innovation and a focus on AI-native solutions, the company has grown to a global workforce dedicated to freeing people from busywork.

$80,000–$125,000/yr
US Unlimited PTO

  • Own the long-term technical direction of Roo's frontend platform, including systems, tooling, and architecture across web and mobile.
  • Partner with Product and Design to evolve the design system as a foundational platform through integrations, documentation, and developer workflows.
  • Lead platform initiatives like framework upgrades, React Native modernization, and shared library evolution to increase engineering velocity.

Roo is a veterinary staffing platform that connects professionals with animal hospitals for relief work and hiring. With over 20,000 veterinary professionals and 9,000 animal hospitals, we're a mission-driven company focused on empowering animal healthcare workers.