{"schemaVersion":"jobsearcher.job.v1","id":"aa5acb6cdbafb19745f2f145","url":"https://jobsearcher.com/jobs/aa5acb6cdbafb19745f2f145","canonicalUrl":"https://jobsearcher.com/jobs/aa5acb6cdbafb19745f2f145","title":"Principal Python Engineer","description":"MSIG USA continues to grow!\nCompany Overview:\nMSIG USA is the US-based subsidiary of MS&AD Insurance Group Holdings, Inc., one of the world’s top P&C carriers and a global Class 15 insurer, with A+ ratings and a reach that spans 40+ countries and regions. Leveraging our 350-year heritage, MSIG USA brings the financial strength, expertise, and global footprint to offer commercial insurance solutions that address your business’s unique risks.\nRole Overview:\nJoin us at the forefront of enterprise AI, building intelligent agentic systems that reason, plan, and take action across complex business workflows. You will design and implement Python-based agents that orchestrate models, tools, and data to automate real-world decision-making at scale. This role blends deep engineering with cutting-edge AI—working on everything from agent frameworks and APIs to safety, observability, and performance. If you are excited about shaping how autonomous systems operate in production, this is where you’ll make a tangible impact.\nKey Responsibilities\nDesign, develop, and maintain scalable backend systems and APIs using Python.\nLead technical design discussions and contribute to system architecture decisions.\nWrite clean, testable, and well-documented code following best practices - also with assistance of LLM.\nOptimize application performance, reliability, and scalability.\nCollaborate with product managers, designers, and other engineers to deliver end‑to‑end solutions.\nMentor junior and mid‑level engineers through code reviews, pairing, and technical guidance.\nDrive improvements in code quality, tooling, CI/CD, and engineering processes.\nParticipate in on-call rotations and troubleshoot production issues when needed.\nRequired Qualifications\n8-10 plus years of professional software engineering experience, with strong focus on Python\nDeep understanding of Python frameworks such as FastAPI, Flask or similar\nExperience building and consuming MCPs, RESTful APIs (and/or GraphQL)\nHands-on experience with cloud platforms - Azure experience preferred.\nSolid understanding of software design principles, data structures, and algorithms\nExperience with unit testing, integration testing, and test automation\nProficiency with Git and collaborative development workflows\nStrong communication skills and ability to work in cross-functional teams.\nPreferred Qualifications\nExperience with designing and building agentic platforms.\nExperience with microservices architecture\nFamiliarity with Docker, Kubernetes, or container orchestration\nExposure to event-driven systems, message queues (Kafka, RabbitMQ)\nKnowledge of CI/CD pipelines and DevOps best practices\nExperience working in high-scale, production environments.\nPrior experience mentoring or leading engineers.\nSALARY: The estimated salary range for this position is $140,000.00 - $200,,000.00 per year. This is a good-faith assessment of the salary range for this position only. In determining the actual salary within this range, MSIG USA will consider a candidate’s relevant experience, location, and other job-related factors.\n\nAdditional Benefits:\nHealthcare and Retirement Benefits\nComprehensive medical, dental, and vision coverage\n401(k) with a generous employer match and profit-sharing contribution\nWellness incentive program\nLife and accidental death and dismemberment (AD&D) insurance\nFlexible spending programs\nShort-term and long-term disability plans\n\nAdditional Benefit Programs\nPaid time off program\nPaid charitable leave\nPaid parental leave\nTuition reimbursement program\nPersonal insurance (auto/homeowners) discounts\n\n#LI-HYBRID\n\n#LI-REMOTE, #LI-HYBRID, #LI-ONSITE\n\nIt's an exciting time for our company and a great opportunity to join a financially sound and growing global insurance group!\n\nIt is the policy of MSIG USA to provide equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state or local law. In addition, MSIG USA will provide reasonable accommodations for qualified individuals with disabilities.","company":"Mitsui Sumitomo Insurance Group","rawCompany":"mitsui sumitomo insurance group","city":"Hackettstown","state":"NJ","isRemote":false,"isActive":false,"createdAt":"2026-07-18T17:07:35.650Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"}],"industries":[{"code":"524210","title":"Insurance Agencies and Brokerages","slug":"insurance-agencies-and-brokerages"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"524298","title":"All Other Insurance Related Activities","slug":"all-other-insurance-related-activities"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Principal Python Engineer","description":"MSIG USA continues to grow!\nCompany Overview:\nMSIG USA is the US-based subsidiary of MS&AD Insurance Group Holdings, Inc., one of the world’s top P&C carriers and a global Class 15 insurer, with A+ ratings and a reach that spans 40+ countries and regions. Leveraging our 350-year heritage, MSIG USA brings the financial strength, expertise, and global footprint to offer commercial insurance solutions that address your business’s unique risks.\nRole Overview:\nJoin us at the forefront of enterprise AI, building intelligent agentic systems that reason, plan, and take action across complex business workflows. You will design and implement Python-based agents that orchestrate models, tools, and data to automate real-world decision-making at scale. This role blends deep engineering with cutting-edge AI—working on everything from agent frameworks and APIs to safety, observability, and performance. If you are excited about shaping how autonomous systems operate in production, this is where you’ll make a tangible impact.\nKey Responsibilities\nDesign, develop, and maintain scalable backend systems and APIs using Python.\nLead technical design discussions and contribute to system architecture decisions.\nWrite clean, testable, and well-documented code following best practices - also with assistance of LLM.\nOptimize application performance, reliability, and scalability.\nCollaborate with product managers, designers, and other engineers to deliver end‑to‑end solutions.\nMentor junior and mid‑level engineers through code reviews, pairing, and technical guidance.\nDrive improvements in code quality, tooling, CI/CD, and engineering processes.\nParticipate in on-call rotations and troubleshoot production issues when needed.\nRequired Qualifications\n8-10 plus years of professional software engineering experience, with strong focus on Python\nDeep understanding of Python frameworks such as FastAPI, Flask or similar\nExperience building and consuming MCPs, RESTful APIs (and/or GraphQL)\nHands-on experience with cloud platforms - Azure experience preferred.\nSolid understanding of software design principles, data structures, and algorithms\nExperience with unit testing, integration testing, and test automation\nProficiency with Git and collaborative development workflows\nStrong communication skills and ability to work in cross-functional teams.\nPreferred Qualifications\nExperience with designing and building agentic platforms.\nExperience with microservices architecture\nFamiliarity with Docker, Kubernetes, or container orchestration\nExposure to event-driven systems, message queues (Kafka, RabbitMQ)\nKnowledge of CI/CD pipelines and DevOps best practices\nExperience working in high-scale, production environments.\nPrior experience mentoring or leading engineers.\nSALARY: The estimated salary range for this position is $140,000.00 - $200,,000.00 per year. This is a good-faith assessment of the salary range for this position only. In determining the actual salary within this range, MSIG USA will consider a candidate’s relevant experience, location, and other job-related factors.\n\nAdditional Benefits:\nHealthcare and Retirement Benefits\nComprehensive medical, dental, and vision coverage\n401(k) with a generous employer match and profit-sharing contribution\nWellness incentive program\nLife and accidental death and dismemberment (AD&D) insurance\nFlexible spending programs\nShort-term and long-term disability plans\n\nAdditional Benefit Programs\nPaid time off program\nPaid charitable leave\nPaid parental leave\nTuition reimbursement program\nPersonal insurance (auto/homeowners) discounts\n\n#LI-HYBRID\n\n#LI-REMOTE, #LI-HYBRID, #LI-ONSITE\n\nIt's an exciting time for our company and a great opportunity to join a financially sound and growing global insurance group!\n\nIt is the policy of MSIG USA to provide equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state or local law. In addition, MSIG USA will provide reasonable accommodations for qualified individuals with disabilities.","datePosted":"2026-07-18T17:07:35.650Z","dateModified":"2026-07-18T17:07:35.650Z","hiringOrganization":{"@type":"Organization","name":"Mitsui Sumitomo Insurance Group","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Hackettstown","addressRegion":"NJ","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"aa5acb6cdbafb19745f2f145"},"url":"https://jobsearcher.com/jobs/aa5acb6cdbafb19745f2f145"}}