Source Job

US

  • Design, program, and test software within a team to develop innovative solutions and products for clients.
  • Author and maintain documentation, develop prototypes, and drive release and post-release activities.
  • Collaborate with designers, build mobile APIs and web applications, and perform peer code reviews.

Software Architecture Network Security Debugging Code Review

20 jobs similar to Principal Developer

Jobs ranked by similarity.

United States

  • Design, develop, and maintain production-grade code across frontend, backend, and data layers for clinical and regulatory requirements.
  • Deploy and operate services in a cloud environment (AWS preferred) and contribute to architecture reviews.
  • Debug and resolve production issues across distributed systems, diagnose performance bottlenecks, and own incident response.

Praxis Precision Medicines is a clinical-stage biopharmaceutical company translating genetic insights into therapies for central nervous system disorders characterized by neuronal imbalance. They emphasize core values of Trust, Ownership, Curiosity, and Results, fostering a diverse and inclusive culture.

India

  • Own and develop domain-specific architecture standards, reference designs, and implementation guidelines for SD-WAN, transport, and network security.
  • Translate high-level architecture into detailed HLDs and LLDs executable by engineering and operations teams.
  • Conduct proof-of-concept testing and lab validation for new technologies and vendor solutions.

This role sits at the intersection of network architecture design and hands-on engineering execution, supporting robust, scalable IP-based connectivity platforms for mission-critical remote environments. The environment is highly collaborative and globally distributed, offering exposure to cutting-edge networking technologies and large-scale infrastructure challenges.

  • Lead the design and development of embedded software for next-generation diagnostic platforms, including requirements, architecture, and integration.
  • Provide technical leadership across cross-functional teams, driving software process improvement and compliance with regulatory standards like IEC 62304.
  • Debug and resolve complex system issues across hardware, firmware, and software boundaries while supporting release readiness activities.

QuidelOrtho is a world-leading in vitro diagnostics company with expertise in immunoassay, molecular testing, clinical chemistry, and transfusion medicine. With over 6,000 employees operating in 130+ countries, the company fosters a culture that prioritizes employee happiness, inspiration, and engagement.

United States

  • Design and build scalable, reliable backend systems for provider services, including third-party integrations and telehealth functions.
  • Identify and solve complex technical challenges, collaborating across teams to drive innovation.
  • Drive all phases of the development lifecycle from planning to post-launch maintenance.

Rula is a mental health care provider dedicated to treating the whole person with evidence-based and compassionate care, aiming to destigmatize mental health. It is a remote-first company that hires in most U.S. states and fosters a culture of inclusion and diversity.

US

  • Develop, test, and deploy code for prototypes and new product features.
  • Collaborate with team members to solve technical challenges and improve solution design.
  • Experiment with modern tools, frameworks, and emerging technologies.

Twilio shapes the future of communications, delivering innovative solutions to hundreds of thousands of businesses and empowering millions of developers worldwide. The company fosters a remote-first culture with a strong emphasis on connection and global inclusion.

Global

  • Implement high-quality software security and data protection solutions
  • Research and suggest the best way to implement business requirements
  • Identify improvements in existing architecture and legacy code to continuously refine and evolve the product

Teramind is a global leader in user behavior analytics and insider risk management. As a fully-remote, diverse team since 2014, we offer a forward-thinking culture with ongoing training and career growth.

United States Unlimited PTO

  • Work on the Tailscale product, focusing on networking features and optimizations across open-source client code and backend services.
  • Take ownership of the entire product lifecycle, from coding and system design to feature ideation and strategic decisions.
  • Collaborate with designers and product managers to shape features that enhance networking capabilities for users.

Tailscale builds software to securely interconnect people and devices, regardless of location. Founded in 2019, the fully distributed company is backed by notable investors and serves teams of all sizes.

US Canada

  • Define and own the architectural roadmap for enterprise, data center, and cloud networks.
  • Co-author secure design and lifecycle management of high-performance data center networking.
  • Build an AI-agent based analysis framework for network changes and self-improvement.

Cerebras Systems builds the world's largest AI chip, 56 times larger than GPUs, delivering industry-leading training and inference speeds. The company partners with top model labs, global enterprises, and AI-native startups, including OpenAI, and has a non-corporate work culture that values continuous learning and growth.

US Unlimited PTO

  • Architect and implement scalable, performant, and secure software solutions for backend distributed platforms.
  • Provide technical leadership, write clean code, and conduct code reviews to ensure best practices.
  • Collaborate cross-functionally with product managers, designers, and engineers to translate business requirements into technical specifications.

Dave is a financial app that builds products to level the financial playing field for Americans who are financially vulnerable or living paycheck to paycheck. As a public fintech company, it offers a digital financial platform with products like ExtraCash and is focused on creating accessible credit options.

Canada

  • Building stuff: coding, code reviews, fixing bugs, incident response, and reverse-engineering.
  • Planning and architecture: estimating, collaborating with products, and establishing MVP.
  • Learning and teaching: coaching and mentoring developers to level up over time.

Lightspeed provides a cloud commerce platform that unifies online and physical operations for retail, hospitality, and golf businesses. Founded in 2005 and dual-listed on NYSE and TSX, the company has teams across North America, Europe, and Asia Pacific, and fosters a culture of inclusion and flexibility.

US

  • Design and build scalable, high-availability systems in a continuous delivery environment.
  • Write clean, modular code with unit test coverage and implement standardized design patterns.
  • Collaborate cross-functionally, review code, and drive best practices in testing and performance.

Versant is a media and entertainment business with brands spanning political news, business news, golf, and sports. It is a publicly traded company with a portfolio of iconic brands like CNBC and USA Network, fostering a collaborative and innovative culture.

US

  • Integrate cybersecurity requirements into the design and development of software for diagnostic platforms, including embedded coding.
  • Ensure compliance with FDA cybersecurity guidance and applicable North American regulations.
  • Collaborate with software teams to implement secure-by-design and maintain Design History File documentation.

Meridian Bioscience is a fully integrated life science company that develops, manufactures, markets and distributes innovative diagnostic products. We are dedicated to redefining the possibilities of life from discovery to diagnosis with a collaborative culture seeking talented individuals.

Romania

  • Train AI models on Python coding tasks including algorithms, data structures, and distributed systems.
  • Verify logical accuracy, code quality, and capture error traces to improve model reasoning.
  • Collaborate remotely by conversing with the model and suggesting improvements to prompt engineering and evaluation metrics.

The company is working on training large-scale language models to power scientific discovery, education, and software development. They are a tech-focused organization seeking freelance contractors, with no information on size or culture provided.

US

  • Perform structural analysis and design of main and secondary systems for industrial exhaust ducting.
  • Develop 3D structural models and ensure compliance with codes like AISC 360 and ASCE 7.
  • Collaborate with fabrication teams and prepare documentation for client review.

CECO Environmental is a global leader in sustainable solutions for industrial air, water, and energy transition. Since 1966, they have addressed environmental challenges, and as a publicly traded company on NASDAQ, they foster a culture of innovation, collaboration, and integrity.

US

  • Defines and maintains overall system architecture and technical roadmap for complex software solutions.
  • Provides technical leadership and mentorship to engineering teams throughout the full software development lifecycle.
  • Collaborates with project leadership to translate business requirements into scalable, secure, and maintainable technical solutions.

Agile Defense brings adaptive innovation to support national security missions through advanced technologies and elite minds. The company values a culture defined by the 6Hs: Happy, Helpful, Honest, Humble, Hungry, and Hustle, emphasizing teamwork and a tireless work ethic.

India

  • Develop, test, and deploy code for prototypes and new product features, collaborating on rapid prototyping with modern technologies.
  • Participate in code reviews, documentation, and knowledge sharing while experimenting with AI, machine learning, and emerging technologies.
  • Communicate progress and technical concepts to stakeholders, adapt quickly to feedback, and contribute to continuous improvement of engineering best practices.

Twilio is shaping the future of communications by delivering innovative solutions to hundreds of thousands of businesses and empowering millions of developers. The company has a remote-first culture with a strong focus on connection and global inclusion.

US East Coast

  • Design and implement secure network architectures across cloud, on-premise, and edge/IoT environments.
  • Monitor network activity, investigate security events, and lead incident response.
  • Oversee vulnerability assessments, maintain security hardening standards, and support compliance initiatives.

Kargo builds a connective tissue between the physical world of freight and the digital ecosystem used to manage it. The company is a growing team focused on revolutionizing logistics through smart infrastructure and hardware-software solutions.

US

  • Enable software engineering teams to continuously improve the security posture of products and SaaS environments through AppSec and DevSecOps expertise.
  • Serve as the go-to AppSec expert, mentoring engineers on secure design patterns and coding practices while collaborating on threat models and design reviews.
  • Lead automation of vulnerability management tooling across CI/CD pipelines, perform security code reviews, and contribute to compliance strategies.

Hypori is a high-growth cybersecurity SaaS company transforming how organizations think about secure mobility. Backed by $55M in funding from investors including UBS and AE Industrial Partners, the company is expanding into new commercial and regulated markets.

US

  • Design, code, test, and debug scalable software applications and APIs following best practices.
  • Collaborate with cross-functional teams to translate business requirements into technical solutions.
  • Participate in code reviews, guide AI tooling practices, and maintain technical documentation.

EasyPost provides a developer-friendly REST API for shipping, making shipping simple for businesses from startups to Fortune 500. Founded in 2012 as a YC unicorn, EasyPost is a hyper-growth company with a scrappy, fast-moving culture where builders and problem-solvers thrive.

India

  • Design, implement, and maintain secure network architectures, systems, and infrastructure to mitigate cyber security risks.
  • Evaluate, deploy, and configure security technologies including IDS/IPS, SIEM, IAM, and endpoint protection solutions.
  • Provide expert-level support for incident response and conduct forensic analysis to determine root cause and impact of security breaches.

Hyland is the pioneer of the Content Innovation Cloud, delivering enterprise intelligence to organizations worldwide. With nearly 4,000 employees, Hyland fosters an employee-centric culture focused on career development, wellbeing, and community impact.