{"id":3633795,"url":"https://alion.io/job/ontrac-solutions-sr-full-stack-software-engineer-ai-agents","title":"Sr. Full Stack Software Engineer – AI Agents","company":{"id":2634,"name":"Ontrac Solutions","domain":"ontracsolutions.net","url":"https://alion.io/company/ontrac-solutions","size_band":"51-200","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"Breezy","truth_index":{"grade":"B","score":80,"open_postings":8,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":21,"computed_at":"2026-11-04T06:34:25Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"A2A","optional":false},{"name":"AI Agents","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude","optional":false},{"name":"Function Calling","optional":false},{"name":"GCP","optional":false},{"name":"Gemini","optional":false},{"name":"Google ADK","optional":false},{"name":"Google BigQuery","optional":false},{"name":"Google Cloud Run","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"Multi-Agent Systems","optional":false},{"name":"OpenTelemetry","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Rest API","optional":false},{"name":"Structured Outputs","optional":false},{"name":"TypeScript","optional":false},{"name":"Vertex AI","optional":false}],"status":"live","first_seen_at":"2026-11-02T20:19:20Z","employer_posted_date":"2026-11-02","last_verified_at":"2026-11-04T20:23:01Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"OVERVIEW\nWe are seeking a senior full stack software engineer to join our contractor program supporting a customer engagement that builds applications around multi-agent systems developed with Google's Agent Development Kit (ADK) on Google Cloud Platform.\nThis role is ideal for an engineer who can build the whole application: the agents, the backend services and APIs behind them, and the web interface that users work in. The candidate should have built agents with ADK, deployed them to production on GCP, and operated them afterward, including the evaluation and feedback loops that keep agent behavior reliable over time.\nThe successful candidate will use AI coding tools, with several agents running at once, as a standard part of daily engineering practice. This engineer will work closely with our technical lead, other engineers, and customer stakeholders to ensure project success from initial definition through final delivery.\nREQUIRED CREDENTIALS\nProfessional full stack software engineering experience, including production delivery on Google Cloud Platform\nHands-on experience building and deploying AI agents with Google's Agent Development Kit (ADK)\nBachelor's degree in Computer Science or equivalent practical experience\nREQUIRED QUALIFICATIONS\nADK agent development, including agent definitions, tool design, and session and state management\nDesign and implementation of multi-agent systems, including delegation between agents, sequential, parallel, and loop workflows, and clear boundaries for each agent's context and responsibility\nFeedback loops for agent quality: evaluation sets, automated scoring of agent output, tracing, and using the results to revise prompts, tools, and agent structure\nFrontend development with TypeScript and a modern component framework, including integrating a UI with agent and REST APIs, streaming responses, and authenticated sessions\nBackend service and API development, including relational database design (for example PostgreSQL) with versioned schema migrations\nAuthentication and authorization for web applications and agent tool calls, using OAuth 2.0 / OIDC and JWT\nDeployment and operation of agents and application services on GCP using Cloud Run and Agent Engine\nGemini models on Vertex AI, including prompt design, function calling, and structured output\nTool integration for agents over MCP and REST APIs\nDaily use of Claude and other AI coding assistants for design, implementation, testing, and review, including running multiple agents concurrently, with the judgment to verify and correct generated output\nAutomated testing and CI/CD across the stack, including frontend and end-to-end tests and regression evaluation of agent behavior\nUSEFUL QUALIFICATIONS\nAgent-to-Agent (A2A) protocol\nRetrieval and grounding with Vertex AI Search or vector search\nObservability for agents and services with Cloud Trace, Cloud Logging, and OpenTelemetry\nPub/Sub, Memorystore, and BigQuery\nIntegration of agents with Gemini Enterprise\nGoogle Cloud Professional certifications\nSCOPE OF WORK\nDesign the multi-agent architecture for the solution, including agent roles, delegation, tool boundaries, and state handling\nImplement agents and tools with ADK, including integrations with customer and third-party systems over REST and MCP\nBuild the web frontend and the backend services that expose the agents to users, including the user workflows and the APIs they run against\nDeploy agents and application services to GCP on Cloud Run and Agent Engine, with CI/CD and managed environments and releases\nBuild and maintain evaluation suites and feedback loops that measure agent output, surface regressions, and drive changes to prompts, tools, and agent structure\nInstrument agents and services with tracing and logging so that behavior in production can be inspected and debugged\nUse Claude and multi-agent workflows to accelerate design, implementation, test generation, and code review across the full stack, with the engineer remaining accountable for the correctness of all delivered code\nDeliver unit, integration, end-to-end, and agent evaluation test coverage, participate in code reviews, and document the architecture and operating procedures for our team and the customer's","description_format":"text","description_chars":4237,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Predictive Analytics","AI Consulting & Integration","Cloud Consulting & Migration"],"lifecycle":[{"event":"open","at":"2026-11-02T20:43:41Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":1,"expected_fill_days":21,"reasons":["conf:0","velocity","win:early"],"computed_at":"2026-11-04T06:34:25Z"},"pay":null,"html_url":"https://alion.io/job/ontrac-solutions-sr-full-stack-software-engineer-ai-agents","json_url":"https://alion.io/job/ontrac-solutions-sr-full-stack-software-engineer-ai-agents.json","meta":{"generated_at":"2026-11-05T00:45:49Z","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":890,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-06T00:00:00Z"}},"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":2634},"rest":"https://alion.io/mcp/rest/get_company?id=2634"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fontrac-solutions-sr-full-stack-software-engineer-ai-agents"},{"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%2Fontrac-solutions-sr-full-stack-software-engineer-ai-agents"},{"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%2Fontrac-solutions-sr-full-stack-software-engineer-ai-agents"},{"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/ontrac-solutions-sr-full-stack-software-engineer-ai-agents\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fontrac-solutions-sr-full-stack-software-engineer-ai-agents"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3633795}},{"tool":"search_jobs","arguments":{"company":"ontracsolutions.net","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3633795},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}