Source Job

Europe

  • You will architect and develop complex, high-load backend systems written in Elixir.
  • You will lead technical discussions with product managers, engineers, and designers to turn vague requirements into robust technical specifications.
  • You will mentor mid-level and junior engineers, conduct code reviews, and foster a culture of technical excellence.

Elixir React PostgreSQL GraphQL Kubernetes

20 jobs similar to Senior Fullstack Engineer

Jobs ranked by similarity.

US

  • You will own day-to-day technical execution and write production code as the most senior full-time individual contributor.
  • You will build core systems for patient onboarding, clinician workflows, data pipelines, and AI-assisted tools.
  • You will collaborate with clinicians, leadership, and partners to turn ambiguous healthcare workflows into durable software.

Protera Health is building a new model of virtual musculoskeletal care that is physician-led, multidisciplinary, and technology-enabled. They are a growing company with real customers, revenue, and a culture that values ownership, judgment, and outcomes.

Global

  • Design, build, and operate backend services supporting our WebRTC and Voice SDK products.
  • Take ownership of backend systems including authentication, push notifications, and diagnostic logging.
  • Improve reliability, scalability, and observability of customer-facing services.

We are building the future of global connectivity through a private, multi-cloud IP network and intuitive APIs. We are a financially stable and profitable company that fosters continuous learning and growth.

$81,000–$91,800/yr
Europe

  • Define and maintain the target architecture across squads, turning it into a clear technical roadmap that addresses product needs 6 to 12 months ahead.
  • Write code on critical and transverse pieces, mentor senior and mid-level engineers, and set standards for testing, observability, and deployment.
  • Partner with engineering leadership to frame complex technical decisions, communicate them, and drive technical direction that improves the whole team.

JobTeaser is a career platform that integrates into 800+ European university hubs to connect students with internships and jobs. With a team of over 60 in tech and a strong culture of innovation and ownership, they support 2 million young graduates across Europe.

$185,000–$215,000/yr
US Unlimited PTO

  • Lead a high-performance development team delivering web applications to millions of users monthly in the fintech and media space.
  • Drive technical architecture and engineering decisions, ensuring scalability, performance, and maintainability.
  • Mentor developers through 1:1s, coaching, and career development support, while fostering engineering best practices.

The Motley Fool is a purpose-driven financial services company on a mission to make the world smarter, happier, and richer through investment education and advice. They are a fast-moving, collaborative team that values high-quality work, curiosity, and initiative, with a remote workforce.

US

  • Design and scale GraphQL APIs, gRPC services, and SQL queries for sportsbook and casino wagning systems.
  • Own technical problems of high scope, from proposal to implementation, and drive platform scalability.
  • Mentor engineers, collaborate with stakeholders, and improve production monitoring and alerting.

PENN Entertainment is North America's leading provider of integrated entertainment, sports content, and casino gaming experiences. They offer a fun, relaxed work environment with opportunities for career progression and mentoring.

India

  • Design, build, and operate production services powering real-time voice and communication experiences.
  • Take end-to-end ownership of backend services including authentication, routing, push notifications, and diagnostics.
  • Collaborate with mobile, JavaScript, and infrastructure teams to improve reliability, scalability, and observability.

The company builds real-time communication infrastructure for voice and video applications. It is a technology-focused organization with a collaborative engineering culture.

US

  • Lead frontend architecture, including component design, state management, and performance for React and TypeScript interfaces.
  • Build and extend Python APIs and collaborate on data contracts, API design, and integration patterns.
  • Drive frontend standards, mentor engineers, and support internal tooling for operations and compliance.

Astra builds mission-critical infrastructure for moving money at scale, processing billions annually with 99.9%+ uptime. They are a remote-first, small, high-output team focused on collaboration and professional growth.

$57,415–$76,555/yr
US Canada

  • Design and develop full-stack features for InteleShare, including web UI and Perl API services.
  • Optimize PostgreSQL queries and schema changes for high-volume production databases.
  • Support DevOps initiatives, including Docker, Kubernetes, and CI/CD pipelines.

Intelerad provides cloud-based medical imaging solutions that streamline information flow and improve patient outcomes. With nearly 800 employees across four countries, the company fosters a collaborative, innovative culture and serves over 2,000 healthcare organizations globally.

EU

  • Design and implement complex features across the web-shop, ensuring scalable and maintainable solutions.
  • Extend and build backend services with clean interfaces and well-defined API contracts.
  • Contribute to frontend development using ReactJS, while mentoring less experienced engineers.

Redcare Pharmacy is Europe's No.1 e-pharmacy, dedicated to making healthcare accessible to all. With a focus on innovation, the company fosters a collaborative environment with a diverse team of passionate professionals.

$152,800–$259,200/yr
Americas Unlimited PTO

  • Lead cross-cutting initiatives and drive modular backend architecture to improve scalability and developer velocity.
  • Set standards for APIs, testing, security, and operability while mentoring engineers and shaping technical direction.
  • Own production systems, participate in on-call, and lead AI-assisted engineering workflows with quality and safety guardrails.

GitLab is the intelligent orchestration platform for DevSecOps, helping organizations increase developer productivity and improve operational efficiency. With over 50 million users and trust from more than 50% of the Fortune 100, GitLab fosters a high-performance culture driven by values, continuous knowledge exchange, and AI integration.

United States Canada India Europe

  • Lead design and architecture of complex backend systems and distributed services.
  • Provide hands-on technical guidance and mentor engineering teams.
  • Own end-to-end delivery from feasibility to deployment and maintenance.

Juniper Square provides a unified platform for private markets, combining technology, data, and fund administration services. With over 1,000 employees and $350M+ in funding, the company culture is built on ambition, collaboration, and high standards.

United States

  • Build and extend full-stack features across React frontends and Node.js and Go backend services.
  • Design and query PostgreSQL and MongoDB schemas, and implement secure authentication and authorization.
  • Refactor and decommission legacy components while maintaining existing behavior.

Ontrac Solutions is a professional services firm that provides technical staffing and consulting solutions. They focus on pairing talented engineers with critical customer engagements, fostering a collaborative and results-driven culture.

US

  • Develop and maintain high-quality web applications for 3D design interactions, ensuring intuitive experiences for internal users.
  • Build backend systems and APIs to coordinate 3D tool availability, cloud processing, and integration with manufacturing workflows.
  • Instrument engineering tools to generate data insights for improving operational performance and scalability.

They build sophisticated web-based 3D tools for digital manufacturing, focusing on patient-matched workflows. The company operates as a remote-first global engineering organization, emphasizing collaboration and continuous improvement.

US Unlimited PTO

  • Lead the technical vision and delivery of high-performance APIs and end-user experiences using Ruby on Rails and React.
  • Contribute to evolving software development and testing standards to elevate technical excellence across the team.
  • Collaborate with Product, Design, and Engineering teams to create high-impact features, balancing UX with clean code.

CirrusMD is redefining virtual care by delivering a Physician-first Care & Guidance solution that connects patients with licensed physicians via text or web within a minute. Serving 10 million users across all 50 states, the company offers a collaborative and diverse culture with unlimited PTO and remote-friendly growth opportunities.

Colombia

  • Architect, develop, and optimize full-stack applications with modern web technologies.
  • Lead the design and implementation of scalable microservices, APIs, and cloud-based solutions.
  • Mentor and guide junior engineers, fostering a culture of learning and innovation.

Sonatype is a software supply chain security company that provides end-to-end solutions including proactive protection against malicious open source, enterprise-grade SBOM management, and the leading open source dependency management platform. With over 2,000 organizations relying on them, including 70% of the Fortune 100, they are a global leader in the space.

Slovakia

  • Lead the design and development of modern frontend applications using React and TypeScript.
  • Define frontend architecture standards and optimize Bryntum-based interfaces.
  • Mentor developers and collaborate with cross-functional teams in an agile environment.

Deutsche Telekom System Solutions Slovakia provides innovative information and communication technology services. It is the second largest employer in eastern Slovakia with over 3,900 employees.

US Unlimited PTO 16w maternity 16w paternity

  • Own architecture and rollout strategy for critical platform services from design through migration.
  • Set the technical bar for designing, publishing, and maintaining customer-facing APIs.
  • Act as a force multiplier by mentoring engineers and driving RFCs and decision records.

Vanta helps businesses earn and prove trust by automating security monitoring and compliance. The company has a kind and talented team, is growing rapidly, and is trusted by thousands of customers.

US Unlimited PTO

  • Build and maintain scalable systems for client launches and member access, owning the eligibility, identity, and configuration platform.
  • Work cross-functionally with product and design to translate ambiguous problems into clear technical plans and execute them across the full stack.
  • Serve as a technical thought leader, mentor other engineers, and drive cross-team engineering initiatives while maintaining HIPAA and GDPR compliance.

Modern Health is a mental health benefits platform for employers, offering employees access to one-on-one, group, and self-serve digital resources for well-being. With over $170 million in funding and a culture of high empathy and high accountability, Modern Health is the fastest female-founded company to reach unicorn status and is known for its drive to win.

Australia

  • Own product surfaces end-to-end, from architecture and delivery to operational excellence.
  • Work closely with product on new features, from ideation to production, and iterate based on real usage.
  • Build robust systems with a stack including Node.js, PostgreSQL, AWS, and React, leveraging AI tooling.

Nylon is an AI research platform for tax and law professionals, used by over 2,000 firms across NZ, AU, and the UK. Backed by Blackbird, the company is expanding rapidly into workflows and other professional tools.

US Unlimited PTO

  • Build and maintain Ruby on Rails applications with PostgreSQL, including progressive web applications optimized for mobile, desktop, and offline use.
  • Design and implement RESTful APIs, database schemas, and data models for mission-critical defense and logistics systems.
  • Deploy and manage applications on Kubernetes using containerization, reproducible builds, and secure software supply-chain practices.

Reveal Technology is a dynamic startup revolutionizing field operations by delivering software tools and intelligence to operators in remote, disconnected, and extreme environments. Founded in 2019, the company is scaling its team and technology to meet the accelerating demands of modern warfare and national security.