Senior Full Stack Engineer (AI Platform) at Protagonist

<div class="content-intro"><h2><strong>Join Our Talented Team at Protagonist</strong></h2> <p>We fuse rigorous, methodologically sound analysis with our cutting-edge technology platform, Narrative Analytics®. This powerful combination enables us to quantitatively analyze open-source media, deliver strategic recommendations, and craft executive-level communication strategies for clients with missions that matter.</p> <h2><strong>Why Us?</strong></h2> <p>Our team is a vibrant mix of communication specialists, data scientists, and subject matter experts with extensive experience across U.S. Government agencies, non-profit organizations, and Fortune 500 companies. By joining Protagonist, you’ll immerse yourself in a collaborative environment where innovation thrives, and your contributions truly matter.</p> <h2><strong>What We Do</strong></h2> <ul> <li><strong>Innovative Solutions:</strong> We co-develop cutting-edge solutions with our clients to address tough communication problems and capitalize on opportunities to make a tangible impact.</li> <li><strong>Data-Driven Insights:</strong> Our tools and methodologies provide actionable insights that help clients meet their communication objectives and stay ahead of global challenges.</li> <li><strong>Applied Expertise:</strong> We integrate our solutions within client organizations, leveraging our profound expertise to address critical issues and ensure sustainable success.</li> </ul> <h2><strong>Be Part of Something Bigger</strong></h2> <p>At Protagonist, you’ll work on compelling projects that make a real difference. We seek talented individuals eager to contribute to our mission and grow alongside us. If you’re passionate about communication, data analysis, and making an impact, we invite you to explore a career with Protagonist.</p> <h2><strong>Explore Your Future with Us!</strong></h2> <p>Ready to take the next step in your career? Join us at Protagonist and be part of a team that's making a difference.</p></div><p><strong>Job Description</strong></p> <p><span data-contrast="auto">Protagonist is seeking a Senior Full Stack Engineer (AI Platform) to help build and evolve our&nbsp;internal&nbsp;AI-powered platform. This role is designed for an experienced engineer who can own production systems end-to-end—from backend services and data infrastructure to intuitive, analyst-facing applications—and who is excited to apply modern AI capabilities within a robust software platform.</span><span data-ccp-props="{}">&nbsp;</span></p> <p><span data-contrast="auto">The ideal candidate is a strong full-stack engineer first, with experience building AI- and LLM-powered applications in production. You are comfortable working across the stack, making pragmatic architecture decisions, and taking ownership from technical design through deployment. You thrive in a fast-paced, small-team environment, are comfortable navigating ambiguity and complex technical problems, and bring the judgment and experience to help raise the bar for the engineers around you.</span><span data-ccp-props="{}">&nbsp;</span></p> <p><span data-contrast="auto">Reporting to the VP of Technology, you will design and build core applications and services that power&nbsp;our platform, partnering directly with technical leadership to shape product and architectural direction. You will also collaborate with our customer-facing team to translate analyst and customer needs into scalable, reliable software.</span><span data-ccp-props="{}">&nbsp;</span></p> <h3><strong>Responsibilities</strong></h3> <ul> <li><span data-contrast="auto">Own features end-to-end across the platform: Django REST APIs and data models, React/TypeScript UI, workflow pipelines, and LLM agent services, from technical design through coding, testing, and production</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Partner with technical leadership on architecture and roadmap: turn product vision into system designs, pressure-test ideas, and help drive the technical direction of the platform</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Build LLM-powered systems on AWS Bedrock: tool-using agents, RAG retrieval over OpenSearch, prompt engineering, evaluation, and cost/usage controls</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Develop data and ML workflows in&nbsp;Metaflow&nbsp;orchestrated on Argo Workflows/Kubernetes: ingestion, enrichment, classification, and document processing at scale</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Design for the&nbsp;whole system: PostgreSQL schema, OpenSearch indexing and search, event-driven processing (Kafka, Redis/Celery), and clean API contracts between services</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Collaborate with the&nbsp;customer-facing&nbsp;team to create solutions that support customer needs</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Work in agile sprints with the engineering team, making informed decisions between competing solutions</span><span data-ccp-props="{}">&nbsp;</span></li> </ul> <h3><strong>Requirements</strong></h3> <ul> <li><span data-contrast="auto">U.S. person eligible to work on government contracts; active or prior SECRET clearance preferred</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Bachelor’s and 5 years of experience, or master’s degree and 3 years of experience, in Computer Science,&nbsp;Computer Engineering, or a related technical field</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">5+ years building production software, with&nbsp;demonstrated&nbsp;ownership of full-stack systems</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Expert-level Python, with deep Django (or equivalent framework) and PostgreSQL experience</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Strong TypeScript/React skills, comfortable building complex, data-heavy interfaces</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Experience building LLM applications: agents, tool calling, RAG, prompt engineering, and evaluation against hosted model APIs (e.g., AWS Bedrock)</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Experience with search infrastructure (OpenSearch/Elasticsearch) and event-driven architectures (Kafka, Celery/Redis, or similar)</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Hands-on with AWS, Docker, Kubernetes, Git, and CI/CD; comfortable reading and&nbsp;modifying&nbsp;Terraform</span><span data-ccp-props="{}">&nbsp;</span></li> </ul> <h3><span data-ccp-props="{}"><strong>Ideal Candidates</strong>&nbsp;</span></h3> <ul> <li><span data-contrast="auto">Experience with ML/data orchestration (Metaflow, Argo, Airflow) or NLP pipelines</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Experience in compliance-constrained environments&nbsp;</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Experience with data visualization and analyst-facing tools</span><span data-ccp-props="{}">&nbsp;</span></li> <li><span data-contrast="auto">Startup instincts: bias to ship, comfortable with ambiguity</span><span data-ccp-props="{}">&nbsp;</span></li> </ul> <h4><strong>Join Us</strong></h4> <p>If you’re passionate about technology and making an impact, apply today! Protagonist is dedicated to fostering a welcoming and innovative environment where everyone’s voice can make a difference.</p> <p>Protagonist is an Equal Opportunity Employer.&nbsp;</p> <p>Salary Range: $95,000-$141,000 based on education and level of relevant experience.</p> <p>Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.</p> <p>&nbsp;</p>