{"id":1410116,"url":"https://alion.io/job/fifth-third-bank-principal-software-engineer-agentic-engineering","title":"Principal Software Engineer, Agentic Engineering","company":{"id":1165,"name":"Fifth Third Bank","domain":"53.com","url":"https://alion.io/company/fifth-third-bank","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":77,"open_postings":15,"ghost_share":0,"stale_share":0.933,"repost_share":0,"time_to_fill_p50_days":27,"computed_at":"2026-10-03T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Cincinnati, United States","Detroit, United States","Frisco, United States","United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":113000,"max_usd":224000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":657},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"ITSM","optional":false},{"name":"LLM","optional":false},{"name":"LLM Guardrails","optional":false},{"name":"Python","optional":false},{"name":"TypeScript","optional":false},{"name":"GitHub","optional":true},{"name":"Hybrid Search","optional":true},{"name":"Platform Engineering","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2026-09-02T00:00:00Z","employer_posted_date":"2026-09-02","last_verified_at":"2026-10-03T23:42:00Z","board_verified":true,"closed_at":null,"days_open":32,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":32},"description":"Make banking a Fifth Third better®\nWe connect great people to great opportunities. Are you ready to take the next step? Discover a career in banking at Fifth Third Bank.\nWe are looking for a Principal Software Engineer to join our Agentic Engineering team. You will build a platform where specialized AI agents compose across technical domains - knowledge and policy, change/ITSM, network security, cloud, and source code. Instead of an engineer manually stitching together answers from a half-dozen tools, agents coordinate with each other to do the work.\nThis is a hands-on technical leadership role that requires deep proficiency in Python and TypeScript, a track record of designing systems that operate reliably at organizational scale, and the ability to set standards that shape how enforcement is practiced across teams.\nWhat You'll Do\nLead and grow a team of software engineers building production agents - setting direction, reviewing designs, mentoring, and unblocking.\nDefine the team's engineering standards - agent patterns, tool integration, testing, code quality, observability, and review practices that hold the bar high.\n Architect the agent platform - the shared services and protocols (e.g., agent-to-agent messaging, tool servers) that let agents discover and compose with one another reliably.\nStay hands-on - write code, prototype hard problems, and pair with engineers on the toughest parts of the system.\nOwn the quality and safety of agent behavior - design how the team verifies that agents stay accurate, cost-efficient, and within guardrails over time.\nTranslate vision into a roadmap - break an ambitious platform vision into shippable increments the team can execute and be proud of.\nRepresent the team to leadership - communicate architecture, trade-offs, and progress clearly to engineering and product leadership.\nWhat Differentiates This Role\nThis role asks you to work with engineers to build autonomous systems that reason - agents that make decisions, call tools, and message one another.\nYou're defining how agents are built across the team - the shared patterns, base abstractions, and “paved road” that make new agents fast to build and safe to run.\nYou're responsible for how we know agents are behaving - observability, evaluation, and continuous governance, not a one-time check.\nYou're growing a team that can reason about non-deterministic systems - where correctness, cost, and safety all have to be designed in, not bolted on.\nWhat You Will Bring\n8-12+ years of software engineering experience with deep proficiency in Python and TypeScript.\nA track record oftechnically driving teams of engineers - mentoring, setting standards, and shipping complex systems together.\nExperience building agentic or multi-step automated systems - tool orchestration, LLM reasoning loops, or agent frameworks.\nThe ability to set architectural direction and reusable patterns that other engineers adopt.\nExperience designing for non-deterministic behavior, edge cases, and failure - and building the testing and observability to catch them.\nNice to Have\nExperience building LLM safety, evaluation, or governance systems end-to-end.\nRetrieval / hybrid search over enterprise knowledge.\nBackground in platform engineering or developer tooling at enterprise scale.\nTerraform and infrastructure-as-code experience.\nOpen-source contributions on public GitHub.\nWork Environment\nThis role is hybrid. Candidates must be located in one of the following locations: Farmington Hills / Metro Detroit, Michigan; Frisco, Texas; or Cincinnati, Ohio.\nPosition not available for immigration sponsorship.\nPrincipal Software Engineer, Agentic EngineeringAt Fifth Third, we understand the importance of recognizing our employees for the role they play in improving the lives of our customers, communities and each other. Our Total Rewards include comprehensive benefits and differentiated compensation offerings to give each employee the opportunity to be their best every day.\nThe base salary for this position is reflective of the range of salary levels for all roles within this pay grade across the U.S. Individual salaries within this range will vary based on factors such as role, relevant skillset, relevant experience, education and geographic location. In addition to the base salary, this role is eligible to participate in an incentive compensation plan, with any such payment based upon company, line of business and/or individual performance.\nOur extensive benefits programs are designed to support the individual needs of our employees and their families, encompassing physical, financial, emotional and social well-being. You can learn more about those programs on our 53.com Careers page at: https://www.53.com/content/fifth-third/en/careers/benefits.html or by consulting with your talent acquisition partner.\nLOCATION -- Farmington Hills, Michigan 48331-3552Attention search firms and staffing agencies: do not submit unsolicited resumes for this posting. Fifth Third does not accept resumes from any agency that does not have an active agreement with Fifth Third. Any unsolicited resumes - no matter how they are submitted - will be considered the property of Fifth Third and Fifth Third will not be responsible for any associated fee.\nFifth Third Bank, National Association is proud to have an engaged and inclusive culture and to promote and ensure equal employment opportunity in all employment decisions regardless of race, color, gender, national origin, religion, age, disability, sexual orientation, gender identity, military status, veteran status or any other legally protected status.","description_format":"text","description_chars":5624,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"},{"name":"Texas","iso":null,"kind":"city"},{"name":"Michigan","iso":null,"kind":"city"},{"name":"Ohio","iso":null,"kind":"city"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Financial Services","Commercial & Retail Banks","Mortgage Lending & Brokers"],"lifecycle":[{"event":"open","at":"2026-09-28T18:59:45Z"}],"visa":[],"liveness":{"score":23,"band":"cold","label":"Long shot","p_open":1,"p_active":0.415,"p_room":0.55,"age_days":31,"expected_fill_days":27,"reasons":["conf:22","stale_co","velocity","win:tail","comp:brand"],"computed_at":"2026-10-03T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/fifth-third-bank-principal-software-engineer-agentic-engineering","json_url":"https://alion.io/job/fifth-third-bank-principal-software-engineer-agentic-engineering.json","meta":{"generated_at":"2026-10-04T02:04:35Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":2860,"day_limit":5000,"remaining_today":2140,"minute_limit":60,"resets_at":"2026-10-05T00:00:00Z"}}}