Source Job

$162,500–$211,250/yr
US Unlimited PTO

  • Build and maintain the core of our production platforms, spending most of your time hands on in the codebase.
  • Own architecture decisions, review pull requests and designs from earlier-career engineers, and mentor engineers early in their careers.
  • Develop across the full stack, partnering with IT Security and Data and Analytics to keep systems reliable and built to last.

TypeScript Python React System Design

20 jobs similar to Sr. Principal Platform Engineer

Jobs ranked by similarity.

  • Design, build, and ship full stack features for our digital health platform.
  • Own major parts of the codebase and lead project execution with cross-functional teams.
  • Write clean, tested, high-performance code while elevating engineering standards.

Nourish is an AI-native digital health system that matches patients with dietitians, physicians, medications, lab testing, and AI agents for insurance-covered care across all 50 states. Founded four years ago, it has completed millions of appointments, tripled yearly, and raised $215M, fostering a high-bar, no-ego culture.

$151,535–$220,881/yr
US 12w maternity 12w paternity

  • Drive platform engineering and strategy for clients, connecting long-term technical vision to shipped software.
  • Advise on architecture, scalability, and modernization, balancing technical choices with business outcomes.
  • Mentor client engineering teams and lead technical discussions while modeling our values.

8th Light is a technology solutions consultancy that partners with organizations from early-stage startups to the world's largest companies to solve hard software challenges. Founded in 2006, we foster an open, collaborative culture grounded in continuous education, mentorship, and honesty.

$141,000–$184,000/yr
US 18w maternity 10w paternity

  • Build and maintain Typescript driven web applications with in-house and open source frameworks.
  • Collaborate with teams to design, develop, test, implement, and support full-stack solutions.
  • Perform code reviews and technical documentation for peers.

Evolve makes vacation rental easy for everyone. The team runs on curiosity, communication, and accountability, striving for exceptional experiences for owners and guests.

$185,300–$276,000/yr
US Unlimited PTO

  • Lead end-to-end development of product features from design through deployment and ongoing support.
  • Architect and build scalable backend services and APIs using TypeScript/Node.js.
  • Collaborate cross-functionally with Product, Design, CX, and Integrations to deliver customer-facing functionality.

Meadow is a modern payments platform for higher education that simplifies the entire student financial experience. They are a highly ambitious, talented team transforming the $600 billion higher education payments industry.

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.

$160,000–$170,000/yr
US

  • Partner closely with product and executive leadership to inform and implement company strategy.
  • Drive technical strategy and architecture for the forecasting product across all engineering domains.
  • Champion operational excellence, security, and compliance while mentoring engineering staff.

Endpoint is an interactive response technology (IRT) systems and solutions provider that supports the life sciences industry. Since 2009, the company has grown to have offices across the US, Europe, and Asia, focused on helping sponsors achieve clinical trial success.

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.

$151,000–$178,500/yr
US

  • Lead and evolve the architecture of the core platform, including React frontend, Node.js/Express APIs, Postgres, and AWS ECS infrastructure.
  • Mentor engineers across all levels through pairing, review, and coaching, establishing engineering standards and practices.
  • Partner with engineering leadership and product to scope and de-risk large technical initiatives, driving delivery and production support.

AnswersNow is trailblazing the future of autism therapy with an innovative virtual ABA therapy platform designed by clinicians to make therapy more immediate, accessible, and effective. The company operates fully remote with a team focused on reshaping autism therapy, though its specific size and culture details are not provided.

EMEA

  • Design and deliver a scalable, highly available, resilient, and secure cloud-base infrastructure.
  • Collaborate with cross-functional teams to define, design, and ship application features.
  • Ensure the performance, quality, and responsiveness of applications and infrastructure.

ClickHouse is a real-time analytics database company that provides a cloud platform for managing and querying data. The company is globally distributed with over 25 countries, remote-friendly, and values a culture of continuous improvement and collaboration.

UK Ireland 5w PTO 16w maternity 16w paternity

  • Lead large technical projects and set technical direction for privacy and AI governance features.
  • Design and develop new product functionality with TypeScript, React, and Node.js.
  • Mentor engineers and help shape engineering practices as we grow in the UK and Ireland.

Vanta helps businesses earn and prove trust by automating security monitoring and compliance for standards like SOC 2, HIPAA, and ISO 27001. The company has a kind and talented team and is growing quickly, with offices in SF, NYC, London, Dublin, Tel Aviv, and Sydney.

$135,000–$165,000/yr
US Unlimited PTO

  • Build full-stack features for the loan origination platform, including intake, decisioning, servicing, and collections.
  • Create internal tooling and data pipelines for loan management, compliance, and portfolio analytics.
  • Use AI-assisted development and collaborate with legal, data, and school stakeholders to deliver high-quality, compliant software.

Clasp is a mission-driven fintech expanding education access via student loan repayment and lending technology for colleges and employers. We're a venture-backed Forbes Fintech 50 startup focused on social impact.

$145,500–$235,400/yr
US

  • Build and ship end-to-end product capabilities across frontend and backend systems.
  • Develop user experiences using TypeScript and React, along with services and APIs using Go, Python, or comparable tools.
  • Collaborate with Product, Design, Data, and engineering partners to balance usability, performance, reliability, and time to value.

LaunchDarkly provides a feature management platform that helps engineering teams ship software and AI with speed, safety, and control. They are a growing company that values humble, open, collaborative, and kind teams.

$175,000–$210,000/yr
US

  • Work across the stack to drive high-leverage projects from concept to completion and produce detailed technical specifications.
  • Up-level the team with expertise in API or system design, cloud infrastructure, healthcare data, or other areas while collaborating with a multidisciplinary team.
  • Build and refine user-facing features, establish consistent APIs, and write unit, integration, and end-to-end tests for new features.

Curai Health is a healthcare company that uses artificial intelligence and clinical expertise to make care more affordable, accessible, and effective. They are a mission-driven team of talented colleagues committed to collaborating closely and driving meaningful impact in healthcare.

Global Unlimited PTO

  • Build and maintain application features across frontend and backend using Python, React, and TypeScript.
  • Collaborate with the engineering team to ship production-quality code and participate in architecture decisions.
  • Troubleshoot full-stack issues and support internal engineering initiatives.

CIQ builds enterprise infrastructure for high-performance computing, AI, and cloud-native orchestration, including Rocky Linux support and related products. It is a company of builders, operators, and open source practitioners serving large enterprises, government agencies, and research institutions.

$140,000–$180,000/yr
US

  • Develop full-stack web applications using modern TypeScript with a functional-first approach.
  • Build scalable backend APIs in Node and PostgreSQL and implement intuitive UIs from Figma mockups.
  • Collaborate through code reviews, mentorship, and agile practices to maintain high technical standards.

Care Access is dedicated to making the future of health better for all by bringing world-class research and health services directly to communities that face barriers to care. With hundreds of research locations, mobile clinics, and clinicians globally, they support local leaders and ensure equitable access to medical breakthroughs.

$165,000–$180,000/yr
US

  • Serve as a hands-on technical leader designing and evolving internal enterprise platforms that accelerate delivery speed, deployment safety, and operational reliability.
  • Architect end-to-end automated UI and API test suites, build synthetic data generation tools, and develop front-end tools for vendor teams.
  • Drive enterprise observability, CI/CD pipelines, and infrastructure as code while mentoring engineers and serving as a technical liaison.

Focus is a digital services firm dedicated to delivering impactful projects in the civic tech space. They partner with government agencies to modernize systems and emphasize work-life balance, remote work, and cutting-edge tooling.

$199,750–$260,000/yr
US

  • Drive front-end architecture and technical strategy across the NodeZero platform.
  • Mentor engineers and lead complex initiatives spanning multiple teams.
  • Build scalable, reusable UI systems and developer workflows in React and TypeScript.

Horizon3 is a fast-growing, remote cybersecurity company whose NodeZero platform delivers autonomous pentesting to find, fix, and verify attack vectors. It's a team of ex-special ops and startup engineers focused on collaboration, ownership, and results.

India

  • Lead architecture and delivery of industry solutions from customer problem to production launch.
  • Design reusable industry layer with configurable objects, workflows, and automations.
  • Build integrations with industry platforms and define standards for feature versioning and rollback.

HighLevel is an AI-powered business operating system that provides infrastructure for agencies, entrepreneurs, and SMBs to build, automate, and scale. With over 2,000 team members across 10+ countries, it operates as a global, remote-first organization that values initiative, clarity, and execution.

$140,000–$155,000/yr
Global

  • Design, build, and ship full stack features across the Registry platform including frontend, backend, and database.
  • Write and maintain APIs and webhooks, ensuring idempotency, retries, and data reconciliation.
  • Partner with Product, Data, and Clinical Operations to translate requirements into technical designs and shipped software.

FamilyWell builds a Registry platform integrating EMR and RCM systems for healthcare. They are a remote startup focused on engineering quality and cross-functional collaboration.

EMEA

  • Lead technical discussions to identify gaps in the telematics data platform and influence roadmap with data-driven solutions.
  • Ship full-stack features across front-end, back-end, and mobile using technologies like GoLang, GraphQL, and React.
  • Mentor and develop engineers while embedding Samsara's cultural principles to build an inclusive, high-performing team.

Samsara is the pioneer of the Connected Operations Cloud, helping organizations harness IoT data to improve safety, efficiency, and sustainability of physical operations. As a recently public company with a global workforce, Samsara fosters a culture of customer success, long-term thinking, growth mindset, inclusivity, and teamwork.