Senior Engineer .NET

Government Employees Insurance Company; Dallas (TX); On-site; USD 100,000 - 215,000; Full time

Job summary

GEICO is seeking a Senior Full-Stack Engineer to design and deliver scalable, high-performance solutions across the organization. You will mentor junior engineers and drive continuous improvement of engineering practices.

The role emphasizes full-stack development with ReactJS on the frontend and Java/.NET on the backend, plus experience with SQL/NoSQL, RESTful APIs, and cloud platforms. You will participate in DevOps and be on-call for critical systems.

Qualifications

• 5+ years professional software development in large-scale environments.
• 4+ years backend with .NET or Java frameworks.
• 3+ years ReactJS experience.
• Proficient front-end: HTML5, CSS3, JavaScript (ES6+), Redux/Hooks.
• SQL and NoSQL databases; JSON, XML, YAML familiarity.
• Cloud platforms (Azure/AWS/GCP) and RESTful APIs.
• Familiar with microservices, open-source tools, and modern practices.

Responsibilities

• Architect, develop, and maintain scalable distributed systems.
• Define product requirements with stakeholders.
• Collaborate across teams through the SDLC for seamless delivery.
• Lead design sessions, code reviews, and mentor engineers.
• Develop reusable components and scalable full-stack apps.
• Build front-end features using ReactJS Redux Hooks; backend with .NET/Java.
• Develop and integrate RESTful APIs and microservices.
• Apply DevOps practices: CI/CD, Docker, Kubernetes; publish docs.
• Provide 24x7 on-call support as needed.

Skills

ReactJS

HTML5

CSS3

JavaScript ES6+

Redux

Hooks

ASP.NET Core

Spring Boot

Java

SQL

NoSQL

Cloud platforms

RESTful APIs

Microservices

Docker

Kubernetes

Education

Bachelor’s or Master’s degree in Computer Science or related field

Tools

ASP.NET Core

Spring Boot

Docker

Kubernetes

Azure

AWS

GCP

Job description

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 play a critical role in driving innovation, leveraging automation, and ensuring efficient data management. 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

• Design and Develop Systems: Architect, develop, and maintain scalable, resilient distributed systems.
• Define Product Requirements: Collaborate with stakeholders to define product requirements and deliver optimal solutions.
• Collaborate Across Teams: Work with cross-functional teams throughout the software development lifecycle to ensure seamless integration and delivery.
• Lead and Mentor: Conduct design sessions, code reviews, and mentor junior engineers to elevate engineering quality and share best practices.
• Develop Reusable Components: Create reusable application components and patterns to improve efficiency and scalability.
• Full-Stack Development: Design, develop, and maintain scalable full-stack applications, including front‑end features using ReactJS and its ecosystem (e.g., Redux, Hooks), backend services with .NET or Java frameworks, and efficient data management using SQL and NoSQL databases.
• API and Microservices: Develop and integrate RESTful APIs and microservices for seamless communication between systems.
• DevOps Practices: Utilize CI/CD pipelines, containerization (Docker), and orchestration (Kubernetes) to streamline development and deployment.
• Documentation: Publish and maintain documentation for design references, workflows, and runbooks.
• System Support: Provide support for critical systems, including 24x7 on‑call support when necessary.

Experience

• Professional software development experience in large‑scale enterprise environments.
• Strong front‑end development skills, including HTML5, CSS3, JavaScript (ES6+), and ReactJS with Redux or Hooks.
• Experience building backend services using Java, ASP.NET Core, Spring Boot, or similar frameworks.
• Proficiency with SQL and NoSQL databases, including working with structured and nested data formats such as JSON, XML, and YAML.
• Experience designing, architecting, and maintaining scalable distributed systems and full‑stack applications.
• Familiarity with cloud platforms such as Azure, AWS, or GCP.
• Knowledge of responsive and adaptive design principles.
• Experience developing and integrating RESTful APIs and microservices.
• Experience with open‑source frameworks, tools, and modern engineering practices.

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.
• 3+ years of experience with ReactJS.
• Strong proficiency in front‑end technologies, including HTML5, CSS3, JavaScript (ES6+), ReactJS, Redux, and Hooks.
• 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.
• Familiarity with Python, Golang, PowerShell, or similar programming and scripting languages is preferred.
• Bachelor’s or Master’s degree in Computer Science, Information Systems, or equivalent education/work experience.

Annual Salary $100,000.00 - $215,000.00

The 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.

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.

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