Senior Full Stack Developer (Hybrid) — Boston

Senior Full Stack Developer Build the next generation of AI-enabled technology. Join a team focused on turning innovative ideas into real-world solutions. As a Senior Full Stack Developer, you’ll design and build scalable, cloud-native applications that deliver better user experiences and support evolving business needs. You’ll work across the full technology stack, from modern front-end experiences to APIs, microservices, AI-driven services, and data. This is a hands-on role for an experienced engineer who enjoys solving complex problems, exploring new technologies, and helping teams build reliable software at speed. Responsibilities • Build scalable, reliable full-stack applications that deliver strong user experiences. • Develop modern solutions using Go, React, TypeScript, .NET, Python, and AI-enabled technologies. • Design and build cloud-native solutions on AWS, including REST APIs and microservices. • Partner with business and technical teams to turn requirements into practical software solutions. • Help shape application architecture, technical design, data solutions, and technology decisions. • Use automated testing, continuous integration, source control, code reviews, and modern development practices to improve software quality and delivery. • Stay hands-on throughout design, development, deployment, and support while helping Agile teams solve complex technical problems and continuously improve. Qualifications: • Bachelor’s degree in Computer Science or a related field. • 8+ years of hands-on software engineering experience, including full-stack application development. • 5+ years of experience developing and implementing AI-driven services. • Experience working in a startup or similarly fast-paced development environment. • Strong experience developing cloud-native solutions, REST APIs, and microservices. • Experience partnering with business and technical stakeholders to translate requirements into technical solutions. • Strong troubleshooting skills, including issue triage, root cause analysis, and solution implementation. • Ability to independently manage development efforts while collaborating across cross-functional teams. Preferred Qualifications: • Experience developing software within Agile environments. • Strong understanding of object-oriented design and development. • Experience with AWS and technologies such as Go, React, TypeScript, .NET, and Python. • Experience working with distributed, relational, NoSQL, and/or vector databases. • Experience using test-driven development, CI/CD, source control, and peer code reviews. • Strong communication skills with the ability to work effectively with both technical and non-technical stakeholders. • Ability to balance strategic thinking with attention to detail in a fast-moving environment.     If you will be working at home occasionally or permanently, the internet connection must be obtained through a cable broadband or fiber optic internet service provider with speeds of at least 10Mbps download/5Mbps upload. For this position, we anticipate offering an annual salary of 130,200 - 217,000 USD / yearly, depending on relevant factors, including experience and geographic location. This role is also anticipated to be eligible to participate in an annual bonus plan. At The Cigna Group, you’ll enjoy a comprehensive range of benefits, with a focus on supporting your whole health. Starting on day one of your employment, you’ll be offered several health-related benefits including medical, vision, dental, and well-being and behavioral health programs. We also offer 401(k), company paid life insurance, tuition reimbursement, a minimum of 18 days of paid time off per year, paid holidays, and leaves of absence. For more details on our employee benefits programs, click here . About The Cigna Group Doing something meaningful starts with a simple decision, a commitment to changing lives. At The Cigna Group, we’re dedicated to improving the health and vitality of those we serve. Through our divisions Cigna Healthcare and Evernorth Health Services, we are committed to enhancing the lives of our clients, customers and patients. Join us in driving growth and improving lives. Qualified applicants will be considered without regard to race, color, age, disability, sex, childbirth (including pregnancy) or related medical conditions including but not limited to lactation, sexual orientation, gender identity or expression, veteran or military status, religion, national origin, ancestry, marital or familial status, genetic information, status with regard to public assistance, citizenship status or any other characteristic protected by applicable equal employment opportunity laws. If you need a reasonable accommodation to complete the online application process, please email seeyourself@thecignagroup.com for assistance.  Please note that this email inbox is dedicated to accommodation requests only and cannot provide application updates or accept resumes. The Cigna Group has a tobacco-free policy and reserves the right not to hire tobacco/nicotine users in states where that is legally permissible. Candidates in such states who use tobacco/nicotine will not be considered for employment unless they enter a qualifying smoking cessation program prior to the start of their employment. These states include: Alabama, Alaska, Arizona, Arkansas, Delaware, Florida, Georgia, Hawaii, Idaho, Iowa, Kansas, Maryland, Massachusetts, Michigan, Nebraska, Ohio, Pennsylvania, Texas, Utah, Vermont, and Washington State. Qualified applicants with criminal histories will be considered for employment in a manner consistent with all federal, state and local ordinances.