{"id":3047520,"url":"https://alion.io/job/liberty-mutual-group-principal-software-engineer-2","title":"Principal Software Engineer","company":{"id":712,"name":"Liberty Mutual Group","domain":"libertymutualgroup.com","url":"https://alion.io/company/liberty-mutual","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":{"grade":"A","score":100,"open_postings":9,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":12,"computed_at":"2026-10-25T05:49:26Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Boston, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":122000,"max_usd":245000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1150},"experience_years_min":8,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agentic Workflows","optional":false},{"name":"Agile","optional":false},{"name":"AI Agents","optional":false},{"name":"Amazon ECS","optional":false},{"name":"Amazon S3","optional":false},{"name":"API Gateway","optional":false},{"name":"AWS","optional":false},{"name":"AWS Bedrock AgentCore","optional":false},{"name":"AWS Fargate","optional":false},{"name":"AWS Step Functions","optional":false},{"name":"Azure DevOps","optional":false},{"name":"Bamboo","optional":false},{"name":"CI/CD","optional":false},{"name":"Context Engineering","optional":false},{"name":"CrewAI","optional":false},{"name":"Datadog","optional":false},{"name":"DynamoDB","optional":false},{"name":"GitHub Actions","optional":false},{"name":"Jenkins","optional":false},{"name":"Knowledge Graph","optional":false},{"name":"LangChain","optional":false},{"name":"LangGraph","optional":false},{"name":"LangSmith","optional":false},{"name":"LLM","optional":false},{"name":"MLFlow","optional":false},{"name":"Node JS","optional":false},{"name":"pgvector","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Postman","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"Scrum","optional":false},{"name":"Semantic Search","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"Azure","optional":true},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-10-22T01:02:26Z","employer_posted_date":"2026-10-22","last_verified_at":"2026-10-25T13:13:31Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Description\nHiring Manager: Derek Gaudet\n You must be authorized to work in the United States without employer sponsorship now or in the future. We will not sponsor employment visas. Candidates who will require future sponsorship, including candidates on CPT/OPT/STEMOPT who will require future sponsorship, are not eligible to apply.\nAt Liberty, you'll thrive in a hybrid setting that fosters in-person collaboration, innovation and growth. This approach optimizes both remote and in-person interactions, enabling you to connect and ideate with your team and deepen valuable relationships across the company, while still enjoying the flexibility of remote work for focused tasks and projects. This position follows a hybrid work model (2 days onsite) and is open to candidates located in Portsmouth, NH; Boston, MA; Plano, TX; Indianapolis, IN; and Columbus, OH.\nWant to work at the leading edge of emerging technology and rapidly expand your engineering skill set? Join Data Science Tech (Reimagineers), where we develop full-stack solutions with a strong focus on data and insights. Our applications feature cutting-edge GenAI capabilities, agentic workflows, and embedded predictive models (pricing, risk selection, desirability, and more) that streamline manual processes and improve decision-making for our users. As part of Reimagineers, you'll join a cross-functional team of Data Scientists, Data Engineers, and Software Engineers, working together to design data-centric solutions for our business stakeholders. Together, we build, test, and maintain the technical architecture behind our applications, data pipelines, databases, APIs, and predictive model workflows.\nThe ideal candidate is a strong communicator with excellent self-motivation and a proactive approach to learning. A growth mindset is essential as we're constantly exploring new and emerging technologies at the frontier of AI.\nResponsibilities \nDesign and develop technical solutions as part of an agile team \nWork in a dynamic and exciting agile environment with Scrum Masters, Product Managers, and team members to develop creative data-driven solutions that meet business and technical initiatives\nWork directly with data scientists to provision data for model development and AI workflows\nInteract with internal stakeholders and the core development team to refine the product backlog\nAutomate and execute all levels of testing (unit, integration, and regression)\nDesign and develop solutions to support ingestion, curation, and provisioning of complex enterprise data to achieve analytics, reporting, and data science\nSupport custom applications through their entire lifecycle\nProactively avoid and eliminate technical debt\nChampion engineering excellence\nFoster a learning/growth mindset and model it for others\nSkills/Technologies\nProgramming Languages: Python,TypeScript/Node.js\nFrontend: React\nData: SQL and relational database concepts, Postgres / pgvector\nService Architecture: Microservices, REST APIs, JSON, Postman\n CI/CD: GitHub Actions (preferable) or equivalent experience such as Bamboo, Jenkins, or Azure DevOps\nAWS: CDK, Glue, Lambdas, S3, Step Functions, DynamoDB, ECS, Fargate, SQS, API Gateway, AgentCore\nObservability: DataDog, MLflow 3\nGenAI: Experience with LLM orchestration, search systems, and context engineering\nHighly Competitive Traits\nHighly competitive candidates will have more than two of the following:\nAPI development: Experience building andscaling APIs for both high-throughput and low-latency applications. Should be able to communicate architectural trade-offs when designing complex API systems.\nLLM expertise: Hands-on experience invoking LLMs and running prompt experiments, plus the ability to articulate how LLM invocation patterns are treated in API design\nAgent workflows: Experience building agents with established frameworks such as LangChain, LangGraph, or CrewAI\n Search systems and context engineering: Experience with RAG, semantic search, vector stores, and knowledge graphs\nExperience with workflow observability, including prompt and model tracking tools (MLflow, LangSmith, or equivalent)\nQualifications\nExperience\nEight or more years of software engineering experience\nStrong background in business operations and strategies, including global technology and financial services trends\nHands-on involvement with layered systems architectures, designs and shared software concepts \nFamiliarity with functional and system integration testing\nExperience working in an agile environment\nSkills\nExcellent negotiation, facilitation and consensus-building capabilities\nOpenness and adaptability to respond to fast-moving circumstances\nProficiency in multiple object-oriented programming languages and tools\nExcellent oral and written communication skills\nAptitude for working in teams\nKnowledge\nIn-depth knowledge of diverse and emerging technologies, architectural concepts and principles\nA deep understanding of layered solutions and designs\nAwareness of policies regarding security and privacy\nUnderstanding of backlog tracking, burndown metrics and incremental delivery\nEducation\nA Bachelor’s or Master’s degree in a technical or business discipline, or equivalent experience \nEmployees may apply for a new role after completing 12 months of employment in their current position.\nEmployees should review all role requirements and apply only for positions for which they are eligible. Hiring processes may vary by country, including differences in procedures, requirements, and timelines. For country-specific details, please consult your local recruiting / HR team.\nTravel\n10%","description_format":"text","description_chars":5611,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":true},"security_clearance":false,"languages":[]},"benefits":["Hybrid work"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Property & Casualty Insurance"],"lifecycle":[{"event":"open","at":"2026-10-22T01:02:26Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 42 · green card filings: 5","filings_12m":42,"filings_prev_12m":49,"green_card_filings_12m":5,"median_offered_wage_usd":130372,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":4}],"liveness":{"score":89,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.885,"p_room":1,"age_days":3,"expected_fill_days":12,"reasons":["conf:0","velocity","win:early","comp:brand"],"computed_at":"2026-10-25T05:49:26Z"},"pay":null,"html_url":"https://alion.io/job/liberty-mutual-group-principal-software-engineer-2","json_url":"https://alion.io/job/liberty-mutual-group-principal-software-engineer-2.json","meta":{"generated_at":"2026-10-25T13:17:35Z","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":18852,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-26T00:00:00Z"}},"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":712},"rest":"https://alion.io/mcp/rest/get_company?id=712"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fliberty-mutual-group-principal-software-engineer-2"},{"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%2Fliberty-mutual-group-principal-software-engineer-2"},{"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%2Fliberty-mutual-group-principal-software-engineer-2"},{"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/liberty-mutual-group-principal-software-engineer-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fliberty-mutual-group-principal-software-engineer-2"}]}