Senior Software Engineer - .NET - HYBRID
Confirmed on the employer's own hiring board on Oct 21, 2026. First seen by Alion on Sep 24, 2026. GEICO scores B on the Alion truth index.
Why Join GEICO?
At GEICO, we offer a rewarding career where your ambitions are met with endless possibilities.
Every day we honor our iconic brand by offering quality coverage to millions of customers and being there when they need us most. We thrive on relentless innovation to exceed our customers' expectations while making a real impact on local communities nationwide.
Founded in 1936, GEICO is a member of the Berkshire Hathaway family of companies and one of the largest auto insurers in the United States. When you join our company, we want you to feel valued, supported, and proud to work here. That's why we offer the GEICO Pledge: Great Company, Great Culture, Great Rewards, and Great Careers.
Position Description
As a Senior Full-Stack Engineer, you will be a key member of the engineering team, collaborating across the organization to design and deliver scalable, high-performance solutions to complex problems. You will drive the adoption of modern engineering practices, cloud-native architectures, platform capabilities, and AI-powered development tools to accelerate delivery while maintaining reliability, security, and operational excellence. In a fast-paced, dynamic environment, you will plan, prioritize, and execute large-scale projects while mentoring junior engineers and contributing to the continuous improvement of engineering practices.
Position Responsibilities
As a Senior Full-Stack Engineer, you will:
- Technical Leadership: Contribute to architectural decisions & establish engineering standards, and drive the successful delivery of complex, business-critical initiatives.
- AI Application Development: Design, develop, and leverage AI-powered development tools and automation to accelerate software delivery, improve code quality, automate testing, identify and remediate security vulnerabilities, and enhance engineering productivity.
- Full-Stack Development: Design, develop, and maintain scalable full-stack applications, including front-end features, backend services with .NET or Java frameworks, and efficient data management using SQL and NoSQL databases.
- Observability and Reliability: Implement monitoring, logging, tracing, and alerting solutions to ensure system reliability, performance, and rapid incident resolution.
- Cloud-Native Architecture: Design and optimize cloud-native solutions leveraging managed services, event-driven architectures, infrastructure automation, and scalable deployment patterns.
- DevOps Practices: Utilize CI/CD pipelines, infrastructure as code, containerization (Docker), and orchestration (Kubernetes) to automate software delivery and improve operational efficiency.
- Collaborate Across Teams: Work with cross-functional teams throughout the software development lifecycle to ensure seamless integration and delivery.
- Developer Productivity: Drive improvements to engineering productivity through reusable platforms, automation, self-service tooling, and standardized development practices.
- API and Microservices: Develop and integrate RESTful APIs and microservices for seamless communication between systems.
- Lead and Mentor: Conduct design sessions, code reviews, and mentor junior engineers to elevate engineering quality and share best practices.
- Documentation: Publish and maintain documentation for design references, workflows, and runbooks.
Experience
- Experience designing, architecting, and maintaining scalable distributed systems and full-stack applications.
- Building scalable, accessible, and high-performance user experiences using React, TypeScript, modern JavaScript frameworks, and responsive design principles.
- Experience building backend services using Java, ASP.NET Core, Spring Boot, or similar frameworks and integrating RESTful APIs and microservices.
- Proficiency with SQL and NoSQL databases, including working with structured and nested data formats such as JSON, XML, and YAML.
- Experience designing and operating cloud-native applications on Azure, AWS, or GCP.
- Experience deploying customer-facing solutions with monitoring, observability, fallback handling, latency considerations, and cost awareness.
- Familiarity with AI-assisted engineering tools and practices for improving development velocity, code quality, automated testing, documentation and operational efficiency is preferred.
Qualifications
- 5+ years of professional software development experience in large-scale enterprise environments.
- 4+ years of experience with backend technologies such as .NET, Java, ASP.NET Core, or Spring Boot.
- Strong proficiency in front-end technologies, including HTML5, CSS3, JavaScript (ES6+), ReactJS, Redux, and Hooks.
- Experience with Python, Go, TypeScript, PowerShell, or similar programming and scripting languages.
- Experience with SQL and NoSQL databases, cloud platforms such as Azure, AWS, or GCP, and structured data formats such as JSON, XML, and YAML.
- Knowledge of responsive and adaptive design principles.
- Bachelor’s or master’s degree in Computer Science, Information Systems, or equivalent education/work experience.
Annual Salary
$105,000.00 - $215,000.00The above annual salary range is a general guideline. Multiple factors are taken into consideration to arrive at the final hourly rate/ annual salary to be offered to the selected candidate. Factors include, but are not limited to, the scope and responsibilities of the role, the selected candidate’s work experience, education and training, the work location as well as market and business considerations.
GEICO will consider sponsoring a new qualified applicant for employment authorization for this position.The GEICO Pledge:
Great Company: Protecting customers through life’s twists and turns with innovation and integrity.
Great Careers: Personalized development programs, mentorship, and certification assistance.
Great Culture: Inclusive and collaborative culture rooted in shared success.
Great Rewards: Competitive pay, benefits, and flexibility to support your well-being and future.
The equal employment opportunity policy of the GEICO Companies provides for a fair and equal employment opportunity for all associates and job applicants regardless of race, color, religious creed, national origin, ancestry, age, gender, pregnancy, sexual orientation, gender identity, marital status, familial status, disability or genetic information, in compliance with applicable federal, state and local law. GEICO hires and promotes individuals solely on the basis of their qualifications for the job to be filled.
GEICO reasonably accommodates qualified individuals with disabilities to enable them to receive equal employment opportunity and/or perform the essential functions of the job, unless the accommodation would impose an undue hardship to the Company. This applies to all applicants and associates. GEICO also provides a work environment in which each associate is able to be productive and work to the best of their ability. We do not condone or tolerate an atmosphere of intimidation or harassment. We expect and require the cooperation of all associates in maintaining an atmosphere free from discrimination and harassment with mutual respect by and for all associates and applicants.