Lead Full Stack Developer

Karsun Solutions; United States; On-site; USD 150,000 - 165,000; Full time

Job summary

Karsun Solutions is seeking a Lead Full Stack Developer to guide a 6-8 person team of developers and test automation engineers. You will collaborate with a Business Analyst and Product Lead to plan and execute agile development within a US government-focused environment.

You will drive hands-on development across the full lifecycle, leverage AI tools to boost productivity, and ensure high-quality, secure, scalable software delivery.

Qualifications

• 10+ years of full-lifecycle application development and at least 3 years with the listed technologies and AWS cloud platform.
• Experience architecting and designing solutions and decomposing them into modules for development.
• 5+ years using Agile, DevSecOps, and Test Driven Development (TDD).
• Proficiency with Agile project management tools (JIRA) and CI/CD pipelines for automated build, test and deployment.
• Experience developing cloud-native solutions following industry best practices.
• Hands-on experience with JavaScript (React.js, Node.js), API development (GraphQL/REST), messaging (Kafka, AWS Kinesis), serverless (AWS Lambda), SQL and NoSQL databases, and AWS services.
• Strong database skills, preferably MySQL.
• Familiarity with AI models, Agentic development and RAG concepts.
• Experience using AI tools (e.g., Copilot, AWS Bedrock) to generate code and support testing.
• Ability to establish source control, branching, documentation, and peer review processes as if open source.
• Experience in release management processes and standards.
• Understanding of industry patterns for application architecture and integration.
• Excellent written and verbal communication; ability to demo products and collect feedback.
• Ability to mentor junior resources and review teammates' work products.
• U.S. government clearance eligibility is required.

Responsibilities

• Lead an agile team of developers and test automation engineers and grow them into a high-performance team.
• Hands-on role across the full development lifecycle: design, develop, implement, test, maintain and enhance products.
• Leverage AI tools and technologies during development to boost productivity and efficiency.
• Ensure product quality and team performance meet standards.
• Provide technical direction and mentor teams on delivery workflows, templates, and best practices.
• Implement Agile and DevSecOps practices to deliver quality products reliably.
• Evaluate requirements, identify gaps/risks, and plan execution.
• Review proposed features for feasibility and effort estimation.
• Craft detailed application designs emphasizing standards, performance, scalability and security.
• Validate proposed architectures and solutions with stakeholders.
• Monitor product performance in production and optimize for scale.
• Track metrics (velocity, quality, usability) and drive improvements.
• Foster communities of practice to align strategies and architectures across teams.
• Stay updated on emerging tools and technologies for platforms and adoption recommendations.
• Maintain and extend skills through ongoing training and knowledge sharing.
• Advise senior management on improvement opportunities and roadmaps.
• Support developers with documentation, training, and mentoring.

Skills

Full-stack development

Team leadership

Agile / DevSecOps

AWS cloud

JavaScript (React/Node)

API development (GraphQL/REST)

DevOps / CI/CD

AI tools usage

Education

Bachelor's degree in Computer Science

Tools

AWS Lambda

Kafka

Kinesis

MySQL

NoSQL databases

Git

CI/CD pipelines

Job description

Why Karsun?

Join Karsun Solutions to grow your career with the company transforming possible for the US Government.

At Karsun, collaboration drives our community. We’re committed to building an environment where team members from diverse backgrounds can innovate, learn and grow with us. Here at Karsun, the only limit to your potential is the limit of your curiosity.

Join Team Karsun, and Find Your Next!

Summary

The Lead Full Stack Developer will be responsible for leading a Small Team (6-8 FTEs) of Full Stack Developers and Test Automation Engineers. They will collaborate with a Business Analyst and Product Lead to plan and execute agile development.

What You'll Be Doing:

• Lead an agile team of developers and test automation engineers and grow them into a high-performance team.
• Hands-on role with extensive involvement in the full development lifecycle, including designing, developing, implementing, testing, maintenance and enhancement of products.
• Hands on experience in leveraging AI tools and technologies during development lifecycle to enhance productivity and efficiency.
• Accountable for the quality of the product delivered and team performance.
• Provide technical direction and mentor teams of resources in all aspects of technical delivery incorporating efficient workflows, frameworks, templates, design and code best practices to produce reusable and maintainable code.
• Implement the best practices of Agile and DevSecOps to deliver quality products predictably and consistently.
• Lead the evaluation of functional/business and technical requirements and identify gaps/risks.
• Review proposed new feature development to validate feasibility and estimate the development work.
• Serve as the technical and technology expert crafting the detailed application design with a focus on standards, performance, flexibility, scalability and security, as well as supporting the implementation of the solution.
• Provide validation of proposed technical architectures and solutions.
• Monitor and analyze product performance in production, while looking for ways to optimize and scale existing solutions.
• Evaluate product and process metrics (such as velocity, productivity, quality, usability) and implement process improvements
• Reinforce strategies, standards, and architecture are consistent and well-integrated across different product teams by creating and engaging in communities of practice.
• Keep abreast of the emerging tools and technologies and make recommendations for relevant platform and technologies
• Keep skills up to date through ongoing self-directed training
• Recommend senior management on improvement areas
• Help application developers to adopt new platforms through documentation, training, and mentoring

Required Qualifications:

• Bachelor's degree in Computer Science or a related field.
• 10+ years of full-lifecycle application development experience and at least 3 years of experience using the technologies listed below and AWS cloud platform
• Experience in architecting and designing solutions and decompose them into modules for development
• 5+ years of experience using Agile, DevSecOps, Test driven development and other lean methodologies
• Must have implementation experience on using Agile project management tools (JIRA), and CI/CD pipelines for continuous integration, testing and deployment.
• Experience developing cloud native solutions according to industry best practices
• Extensive hands-on experience in JavaScript (React.js, Node.js, modern JavaScript libraries - ES6 - 2015 and later versions), API development (GraphQL/RESTful), messaging (Kafka, AWS kinesis or others), serverless application development using AWS Lambda, SQL and NoSQL databases, AWS services (Lambda, S3, Dynamo, Kinesis, RDS, Redshift and several others).
• Strong experience in database queries and working preferably with MySQL.
• Good understanding of AI models , Agentic development and RAG concepts.
• Experience in using AI tools, e.g., Copilot, AWS Bedrock, etc. to generate code for development and automation testing.
• Experience in establishing source code management best practices (branching, repository structure, peer review process, documentation) to manage a code base as if it were open source
• Experience in establishing release management processes and standards
• Deep understanding of industry patterns for application architecture and integration
• Strong written and verbal communication skills with the ability to present and comprehend technical details clearly.
• Must be able to demonstrate product demos to users and stakeholders, collect feedback and implement improvements.
• Ability to mentor junior resources, assist in technical troubleshooting, peer review the team member’s work products and validate.
• The ability to obtain and maintain a U.S. government issued clearance is required.

Preferred Qualifications:

• Experience in a government contracting environment with DoD and non-DoD customers.

Things to Know:

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

Salary Range

The proposed salary range for this role is $150,000 to $165,000 USD. The salary range provided is a good faith estimate representative of all experience levels. Karsun considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.

Third Party Resumes

Karsun does not accept unsolicited resumes through or from search firms or staffing agencies. All unsolicited resumes will be considered the property of Karsun and Karsun will not be obligated to pay a placement fee.

Clearance Information

This position requires the eligibility to obtain a security clearance. The Defense Industrial Security Clearance Office (DISCO), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website: https://www.state.gov/m/ds/clearances/c10978.htm

Location

To be considered for this role, you must reside in one of the following states: CA, CO, DC, FL, GA, IL, MD, NJ, NY, NC, OH, OK, PA, SC, TX, VA, WV.

Work Authorization

Applicants must be authorized to work in the U.S. We may consider candidates currently in H-1B status who are eligible for transfer.

Statement on AI and Hiring Process

At Karsun, we are committed to a fair and equitable hiring process. We do not use artificial intelligence to make decisions on candidates, scan resumes, or source potential hires. Applicants are reviewed by our talent acquisition team and hiring managers to ensure a thorough evaluation based on skills, experience, and alignment with our company values. Our hiring decisions are made with human judgement, ensuring fairness and transparency throughout the process.