Sr. Full Stack Developer

Halvik•Vienna, VA

22d

About The Position

Halvik Corp delivers a wide range of services to 13 executive agencies and 15 independent agencies. Halvik is a highly successful WOB business with more than 50 prime contracts and 500+ professionals delivering Digital Services, Advanced Analytics, Artificial Intelligence/Machine Learning, Cyber Security and Cutting-Edge Technology across the US Government. Be a part of something special! Position Overview Senior Full Stack Developer responsible for leading the design, development, and support of secure, scalable, and high-performing web applications across the full technology stack. Serves as a technical contributor and trusted engineering partner, with deep expertise in Java backend development, front-end application design, cloud services in AWS, and modern software delivery practices. Works closely with product, architecture, QA, DevOps, and operations teams to deliver complex solutions in an Agile environment. Provides technical leadership, mentors team members, and helps guide architecture, development standards, and engineering best practices.

Requirements

Bachelor's Degree in Computer Science, Information Technology, Engineering, or related field, or equivalent practical experience.
Minimum of 7–10 years of professional software development experience, including substantial hands-on experience in full stack development.
Advanced knowledge of Java, Spring Boot, RESTful API design, SQL and relational databases, JavaScript frameworks such as React or Angular, and AWS services.
Demonstrated experience designing, deploying, and supporting applications in AWS.
Strong experience with Git, branching strategies, pull requests, code reviews, and modern Agile delivery practices.
Proven experience designing and maintaining automated testing strategies using tools such as JUnit, Mockito, or equivalent frameworks.
Experience troubleshooting production issues, analyzing logs, and using monitoring tools such as CloudWatch, Splunk, or similar platforms.
Understanding of secure coding practices, application security concepts, and vulnerability mitigation.
Strong written and verbal communication skills with the ability to influence technical decisions and explain complex concepts clearly.
Ability to work independently, guide others, and contribute to technical planning and execution.

Nice To Haves

Demonstrated success leading full stack development efforts in a Java and AWS
Deep experience with Spring Data, Hibernate, JPA, microservices, or distributed system design.
Experience with Docker, containers, and cloud-native deployment patterns.
Familiarity with Infrastructure as Code tools such as CloudFormation, Terraform, or AWS CDK.
Experience with AWS services such as EC2, ECS, EKS, S3, Lambda, RDS, API Gateway, IAM, and CloudWatch.
Strong understanding of observability, including logging, metrics, alerting, tracing, and incident response.
Experience improving application scalability, resiliency, and performance.
Experience working in enterprise, regulated, or public-sector environments.
Familiarity with API documentation standards such as OpenAPI/Swagger.
Experience mentoring developers and contributing to technical hiring, onboarding, or team development.

Responsibilities

Lead the design and delivery of complex full stack solutions using Java, Spring Boot, modern front-end frameworks, and AWS cloud services.
Provide hands-on technical direction for application architecture, service design, integration patterns, and engineering standards.
Own assigned systems or application components through the full development lifecycle, including design, build, testing, deployment, support, and enhancement.
Partner with product owners, solution architects, QA, DevOps, security, and operations teams to translate business requirements into scalable technical solutions.
Design and implement robust backend services, RESTful APIs, front-end components, and database integrations that meet functional and non-functional requirements.
Develop and support solutions deployed in AWS, leveraging services for compute, storage, messaging, monitoring, security, and automation.
Identify and address performance bottlenecks, reliability concerns, and technical debt across the application stack.
Establish and promote testing strategies, including unit, integration, API, and end-to-end testing, to improve software quality and reduce defects.
Troubleshoot complex issues, lead root cause analysis, and support incident response and resolution efforts.
Contribute to CI/CD pipelines, release automation, infrastructure-as-code practices, and deployment optimization.
Document system designs, technical decisions, support procedures, and operational guidance; mentor team members and support onboarding.
Coach junior and mid-level developers, participate in code reviews, and help build team capability and technical maturity.
Recommend and implement improvements to development processes, architecture, security, observability, and team productivity.