Senior Data Platform Engineer - Big Data​/Hadoop

Sr Cloud Engineer - IE07NE

We’re determined to make a difference and are proud to be an insurance company that goes well beyond coverages and policies. Working here means having every opportunity to achieve your goals – and to help others accomplish theirs, too. Join our team as we help shape the future.

The Hartford is seeking a seasoned Senior Data Platform Engineer to join our Cloud Big Data Platform Engineering & Operations team. This role is instrumental in fostering a customer-first mindset and ensuring the stability, scalability, and reliability of our data platforms to support the evolving needs of Data & Analytics applications across the enterprise.

As a technical lead, you will apply your deep expertise in AWS Big Data/EMR infrastructure, Infrastructure as Code (IaC), security, automation and observability to engineer, optimize, and maintain robust, scalable solutions. You will collaborate closely with data engineers to analyze requirements & challenges to recommend platform-driven solutions that maximize performance and efficiency.

We’re looking for a passionate technologist who thrives in a dynamic, fast-paced environment and is committed to building resilient, future‑ready data platforms. You will mentor and guide fellow platform and reliability engineers, promoting a culture of technical excellence, innovation, and collaboration.

• Administer and engineer Big Data platforms across multiple Hadoop clusters in the cloud (AWS EMR), including serverless and containerized environments, to ensure scalability, performance, and reliability.
• Design, implement and maintain highly scalable and resilient multi‑tenant Data Platforms through Infrastructure as Code (IAC) aligning with The Hartford ’s engineering, security and governance principles.
• Ensure operational excellence, independently drive the triaging and service restoration of all high‑impact incidents to minimize the mean time to service restoration and impact to the business. Demonstrate end to end ownership.
• Apply Site Reliability Engineering (SRE) principles to design and implement robust tooling, proactive alerting, and automated response mechanisms that identify, mitigate, and resolve reliability risks—focusing on prevention, early detection, and continuous improvement through automation.
• Own and evolve the architecture of Platform, PaaS, and SaaS solutions to meet current and future business needs—driving innovation, scalability, and operational excellence.
• Participate in an on‑call rotation, providing hands‑on technical expertise during service‑impacting incidents to ensure rapid diagnosis, effective resolution, and continuous improvement of system reliability.
• Evaluate, implement, and manage emerging data technologies with a focus on big data, analytics, data wrangling, business intelligence, and data visualization to drive innovation and efficiency.
• Serve as a subject matter expert and technical lead for data platforms, tools, and application interfaces—driving root cause analysis, resolving complex technical issues, and ensuring platform reliability and performance.
• Provide technical leadership and mentorship to junior and mid‑level data engineers, fostering skill development and promoting engineering best practices.
• Collaborate with and empower data engineers, data scientists, and business analysts by enabling self‑service capabilities for data wrangling, exploration, and analysis.
• Develop training materials and deliver end‑user training sessions to drive adoption, ensure effective use of data solutions, and enhance customer engagement.
• Support the documentation, metadata management, and visualization of data assets to promote data discoverability, transparency, and self‑service analytics.
• Foster a culture of accountability and collaboration by building strong team commitment to shared priorities and strategic goals.

• Bachelor's degree in computer science, Computer Engineering, or a closely related field (or foreign equivalent). Relevant experience may be obtained through a qualifying post‑baccalaureate academic program.
• Extensive expertise in platform administration, big data technologies, data engineering,…