{"id":662765,"url":"https://alion.io/job/protagonist-senior-full-stack-engineer-ai-platform","title":"Senior Full Stack Engineer (AI Platform)","company":{"id":684598,"name":"Protagonist","domain":"protagonist.com","url":"https://alion.io/company/protagonist-2","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Washington, United States","Columbia, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":132000,"max_usd":241000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":3287},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Apache Kafka","optional":false},{"name":"Argo Workflows","optional":false},{"name":"AWS","optional":false},{"name":"AWS Bedrock","optional":false},{"name":"Celery","optional":false},{"name":"CI/CD","optional":false},{"name":"Django","optional":false},{"name":"Docker","optional":false},{"name":"ElasticSearch","optional":false},{"name":"Function Calling","optional":false},{"name":"Git","optional":false},{"name":"Kubernetes","optional":false},{"name":"LLM","optional":false},{"name":"Metaflow","optional":false},{"name":"NLP","optional":false},{"name":"OpenSearch","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"Redis","optional":false},{"name":"Rest API","optional":false},{"name":"Terraform","optional":false},{"name":"Tool Use","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-09-04T19:56:38Z","employer_posted_date":"2026-09-09","last_verified_at":"2026-10-17T12:57:31Z","board_verified":true,"closed_at":null,"days_open":42,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":42},"description":"Join Our Talented Team at Protagonist\nWe 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.\nWhy Us?\nOur 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.\nWhat We Do\nInnovative Solutions: We co-develop cutting-edge solutions with our clients to address tough communication problems and capitalize on opportunities to make a tangible impact.\nData-Driven Insights: Our tools and methodologies provide actionable insights that help clients meet their communication objectives and stay ahead of global challenges.\nApplied Expertise: We integrate our solutions within client organizations, leveraging our profound expertise to address critical issues and ensure sustainable success.\nBe Part of Something Bigger\nAt 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.\nExplore Your Future with Us!\nReady to take the next step in your career? Join us at Protagonist and be part of a team that's making a difference.\nJob Description\nProtagonist is seeking a Senior Full Stack Engineer (AI Platform) to help build and evolve our internal 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. \nThe 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. \nReporting to the VP of Technology, you will design and build core applications and services that power 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. \nResponsibilities\nOwn 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 \nPartner 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 \nBuild LLM-powered systems on AWS Bedrock: tool-using agents, RAG retrieval over OpenSearch, prompt engineering, evaluation, and cost/usage controls \nDevelop data and ML workflows in Metaflow orchestrated on Argo Workflows/Kubernetes: ingestion, enrichment, classification, and document processing at scale \nDesign for the whole system: PostgreSQL schema, OpenSearch indexing and search, event-driven processing (Kafka, Redis/Celery), and clean API contracts between services \nCollaborate with the customer-facing team to create solutions that support customer needs \nWork in agile sprints with the engineering team, making informed decisions between competing solutions \nRequirements\nU.S. person eligible to work on government contracts; active or prior SECRET clearance preferred \nBachelor’s and 5 years of experience, or master’s degree and 3 years of experience, in Computer Science, Computer Engineering, or a related technical field \n5+ years building production software, with demonstrated ownership of full-stack systems \nExpert-level Python, with deep Django (or equivalent framework) and PostgreSQL experience \nStrong TypeScript/React skills, comfortable building complex, data-heavy interfaces \nExperience building LLM applications: agents, tool calling, RAG, prompt engineering, and evaluation against hosted model APIs (e.g., AWS Bedrock) \nExperience with search infrastructure (OpenSearch/Elasticsearch) and event-driven architectures (Kafka, Celery/Redis, or similar) \nHands-on with AWS, Docker, Kubernetes, Git, and CI/CD; comfortable reading and modifying Terraform \nIdeal Candidates \nExperience with ML/data orchestration (Metaflow, Argo, Airflow) or NLP pipelines \nExperience in compliance-constrained environments \nExperience with data visualization and analyst-facing tools \nStartup instincts: bias to ship, comfortable with ambiguity \nJoin Us\nIf 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.\nProtagonist is an Equal Opportunity Employer. \nSalary Range: $95,000-$141,000 based on education and level of relevant experience.\nPursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.","description_format":"text","description_chars":5696,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Market Research","Social Media Analytics & Listening"],"lifecycle":[{"event":"open","at":"2026-09-10T21:43:00Z"}],"visa":[],"liveness":{"score":27,"band":"fade","label":"Fading","p_open":1,"p_active":0.608,"p_room":0.45,"age_days":42,"expected_fill_days":26,"reasons":["conf:2","win:tail"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/protagonist-senior-full-stack-engineer-ai-platform","json_url":"https://alion.io/job/protagonist-senior-full-stack-engineer-ai-platform.json","meta":{"generated_at":"2026-10-17T14:57:24Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":20282,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":684598},"rest":"https://alion.io/mcp/rest/get_company?id=684598"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fprotagonist-senior-full-stack-engineer-ai-platform"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fprotagonist-senior-full-stack-engineer-ai-platform"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fprotagonist-senior-full-stack-engineer-ai-platform"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/protagonist-senior-full-stack-engineer-ai-platform\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fprotagonist-senior-full-stack-engineer-ai-platform"}]}