Company: Radicle Science (Public Benefit Corporation)Location: Remote (U.S. required) with travel for key events (approx. 10%)Reports to: Chief Technology OfficerType: Full-timeTHE OPPORTUNITYRadicle Science is an AI-driven healthtech B-corporation, offering the wellness industry an easy and affordable path to prove their true effects beyond placebo, across diverse conditions and populations. As history’s first “Proof-as-a-Service” company, Radicle combines gold-standard double-blind, randomized, placebo-controlled scientific design, with a unique AI-driven, crowdsourced, virtual, direct-to-consumer approach, to deliver clinical trials at unprecedented affordability and speed. Radicle has productized rigorous proof generation and packaged it as a standardized, automated, scalable, tech-enabled offering for wellness products, ranging from dietary supplements, to functional foods and beverages.We are seeking a senior full stack developer with a passion to build and create innovative, durable, and elegant solutions. You will be involved in the development, management and deployment of our backend cloud infrastructure. Building APIs, dashboards, debugging customer issues, and solving technical and data related problems. You will play a big part in our ongoing success by ensuring our application environments are stable and our application deployments are high quality.ESSENTIAL DUTIES & RESPONSIBILITIES- Lead the design, development, and maintenance of full-stack application features using Next.js, Elixir (Phoenix/LiveView), Python, and Postgres.- Partner closely with the CTO to define architectural direction, evaluate tradeoffs, and create scalable, maintainable system designs.- Provide hands-on technical leadership by reviewing code, mentoring junior engineers, and establishing best practices for code quality, testing, and reliability.- Drive technical decision-making and participate in planning, scoping, and system design discussions.- Translate complex requirements into performant, secure, and well-structured solutions.- Improve backend APIs, data models, and service boundaries to support growth and evolving product needs.- Build high-quality user experiences using Next.js, optimizing for performance, accessibility, and maintainability.- Debug and resolve production issues across the stack, working collaboratively across teams.- Act as an advocate for engineering excellence—maintaining high standards for architecture, documentation, testing, and operational readiness.- Work closely with our designer and research & operations teams to deliver features that are reliable, intuitive, and aligned with business goals.REQUIRED QUALIFICATIONS- 5+ years of professional full-stack engineering experience, ideally in SaaS or similar production environments.- Strong proficiency in modern frontend development practices like React. Next.js proficiency is a plus.- Deep experience with at least one backend language (Elixir, Python, Node, etc.), and willingness to work heavily in Elixir and Python.- Solid understanding of relational database design, SQL performance, and working with Postgres at scale.- Demonstrated experience designing and implementing complex systems, APIs, and data flows.- Strong debugging skills and ability to diagnose issues across front-end, back-end, and infrastructure layers.- Experience participating in or guiding architecture discussions and technical decision-making.- Excellent communication skills and ability to work collaboratively with technical and non-technical stakeholders.PREFERRED SKILLS & EXPERIENCE- Experience working with Elixir/Phoenix in production environments.- Experience building observability into systems (logging, metrics, tracing, alerting).- Familiarity with containerized and orchestrated environments.- Knowledge of distributed systems patterns and scaling strategies.- Experience mentoring engineers, leading projects, or influencing cross-team technical direction.- Familiarity with DevOps tooling and best practices for CI/CD pipelines.- Experience in a startup or similarly fast-paced environment.- Interest in application security, reliability engineering, and performance optimization.WORKING STYLE & LOGISTICSRemote-first team with high ownership and strong collaboration. Some travel (10%) required for key company events. Must manage deadlines and communication across time zones.HOW TO APPLYPlease submit:- Resume or LinkedIn profile- Optional: 1–2 examples showing performance impact (metrics, learnings, iteration)- Portfolio – Production Shipped products