• Define and drive the technical strategy for the entire Applications Portfolio, establishing deep frontend architecture standards (Web, Mobile, Headless) to ensure consistency, scalability, and performance. • Act as a key mentor and coach to senior engineering talent, fostering a culture of technical excellence, high-impact decision-making, and proactive problem-solving. • Collaborate deeply with Product leadership to drive roadmaps, ensuring engineering strategy is inherently aligned with customer needs and product evolution. • Facilitate alignment and clarity across teams regarding goals, outcomes, and timelines for complex, multi-team projects. • Spearhead the evolution of our application architecture from a 'feature factory' model to a platform-driven system, modernizing API layers and integrating emerging standards like the Model Context Protocol (MCP) to enable next-generation agentic workflows. • Partner closely with Design Systems teams to define and influence the evolution of shared UI components and design tokens, ensuring seamless integration with engineering architectural standards. • Identify and reduce systemic technical risks, enforce design principles, and raise the bar through hands-on technical reviews and prototyping.

Role Description 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. 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. Compensation The proposed salary range for this role is $****** to $******* 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.

• Desenvolvimento de API’s utilizando Node.JS, postgres e/ou Mongodb • Monitorar a saúde das nossas aplicações; • Contribuir com evoluções arquiteturais; • Ajudar com resoluções e melhorias em débitos técnicos; • Propor novas ideias e soluções arquiteturais reutilizáveis; • Identificar melhorias no design de nossos códigos e sistemas; • Participação na direção estratégica no time de engenharia; • Mentorar e ajudar pessoas a crescerem e evoluírem na carreira; • Identificar gargalos e melhorias de performance em nosso banco de dados ou API’s; • Ser referência em relação a boas práticas durante a construção de nossos sistemas e aplicações; • Garantir que nossos componentes estejam com um bom design de código; • Garantir que nossos serviços possuem um nível de acoplamento saudável; • Garantir que as evoluções não diminuam a qualidade e saúde de nossos serviços .

• Design, build, test, and deploy REST APIs and backend services in .NET • Collaborate with product and engineering on new features, from spikes through delivery • Participate in code reviews and contribute to team engineering practices • Work with SQL and NoSQL (e.g., MongoDB) data stores in production systems