Lead Full Stack Developer

Karsun Solutions, LLC; New York (NY); On-site; USD 155,000 - 165,000; Full time

Job summary

Join Karsun Solutions, a company transforming possible for the US Government, as Lead Full Stack Developer in New York. You will head a small team of developers and test engineers, guiding agile development with a Business Analyst and Product Lead.

You will design, develop, test, and maintain complex applications while leveraging AI tools to boost productivity. The role emphasizes architecture, mentoring, and delivering secure, scalable solutions within a collaborative, high-performance

Qualifications

• Bachelor's degree in Computer Science or related field.
• 10+ years of full-lifecycle development with 3+ years in listed technologies on AWS.
• Experience architecting solutions and decomposing into modules.
• 5+ years applying Agile, DevSecOps, and test-driven development.
• Jira and CI/CD pipelines experience for CI, tests, and deployment.
• Cloud-native development on AWS including Lambda, S3, Dynamo, RDS, Redshift.
• Strong JS skills (React, Node) and API development (GraphQL/REST).
• Experience with MySQL and NoSQL databases.
• Knowledge of AI models, agentic development and RAG concepts; use of AI tools.
• Source code management, release processes, and code review practices.
• Ability to demo products, communicate clearly, and mentor teammates.
• Eligible to obtain a U.S. government security clearance.

Responsibilities

• Lead a small team (6-8 FTEs) of full-stack developers and test automation engineers.
• Plan and execute agile development with a Business Analyst and Product Lead.
• Provide technical direction and mentor teams on delivery best practices.
• Ensure quality and performance of products; drive continuous improvement.
• Collaborate on architecture and validate proposed technical solutions.
• Utilize AI tools to enhance development productivity and efficiency.
• Monitor product performance and optimize scalability in production.
• Promote DevSecOps practices to deliver reliable software.
• Review feature feasibility, estimates, and manage risks.
• Support senior management with improvement recommendations.

Skills

JavaScript (React.js, Node.js)

API development

Kafka

AWS Kinesis

AWS Lambda

SQL and NoSQL databases

AWS services (S3, DynamoDB, RDS, Redsh

GraphQL/RESTful

AI tools & models (Copilot, AWS Bedro

CI/CD pipelines

JIRA

Source code management

Security clearance (US)

System architecture & design

Mentoring / leadership

Education

Bachelor's degree in Computer Science or related field

Tools

JIRA

CI/CD pipelines

AWS Cloud Platform

GraphQL

REST APIs

Kafka

AWS Lambda

MySQL

NoSQL databases

Kubernetes

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 $155,000 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/md/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.

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