Freelance Java Spring Developer Jobs in Iowa (NOW HIRING)

Job Title: Software Developer (Java / Spring)

Location: Remote (U.S.), with occasional travel as required

Clearance: Must be a US Citizen able to OBTAIN a favorable Public Trust

AttainX Inc. is seeking a Software Developer to design, build, and maintain robust, reliable back-end systems for our Federal Government customers. The ideal candidate specializes in designing and implementing RESTful APIs and microservices using Java and the Spring framework, and brings hands-on experience deploying and operating applications in the cloud. This is a strong fit for a back-end engineer who is committed to code quality, effective team communication, and modernizing legacy applications to enable cloud migration.

Working within an Agile/SAFe delivery team, the developer will deliver enhancements, diagnose and resolve production issues, build reusable frameworks that accelerate delivery, and contribute to the ongoing quality and reliability of mission-critical, customer-facing applications.

Qualifications and Education Requirements:

• Bachelor’s degree in Computer Science, Software Engineering, or a related field; equivalent professional experience will be considered in lieu of a degree.
• 4+ years of professional software development experience with a focus on back-end systems.
• Strong hands-on experience developing with Java and the Spring framework (Spring Boot, Spring Data, and Spring MVC).
• Demonstrated experience designing and implementing RESTful web services and microservice architectures.
• Hands-on experience developing, deploying, and operating applications in a public cloud environment, including core compute, storage, serverless, and API services.
• Experience with relational databases (e.g., PostgreSQL, Microsoft SQL Server, or MySQL) and ORM technologies such as Hibernate.
• Proficiency writing automated unit tests (JUnit/Mockito) and using static analysis tools (e.g., SonarQube) to drive code quality.
• Experience with version control (Git) and CI/CD tooling (e.g., Jenkins).
• Experience delivering in Agile or SAFe environments, including participation in sprint planning, estimation, and demos.
• Strong analytical, troubleshooting, and communication skills, with the ability to collaborate effectively across development, testing, and operations teams.
• Experience with Animal and Plant Health certificates, including the development or support of systems that issue veterinary export health certificates and phytosanitary (plant health) certificates (e.g., USDA APHIS certification systems).
• US citizenship with the ability to obtain and maintain a favorable Public Trust background investigation.

Preferred Qualifications:

• AWS certification such as AWS Certified Developer – Associate or AWS Certified Cloud Practitioner, with hands-on experience across services such as Lambda, API Gateway, CloudWatch, EC2, and S3.
• Experience with Infrastructure as Code using Terraform.
• Certified SAFe® Agilist (SAFe 6) or equivalent Agile certification.
• Experience modernizing and upgrading legacy applications to enable cloud migration, including technical discovery, effort estimation, and dependency analysis.
• Familiarity with front-end web technologies such as React or Angular.
• Working knowledge of additional languages such as Python, JavaScript, or C++.
• Prior experience supporting federal government IT programs.

Job Duties:

• Design, develop, test, and maintain back-end services, RESTful APIs, and microservices using Java and the Spring framework.
• Implement enhancements and new features for mission-critical, customer-facing applications as part of an Agile delivery team.
• Diagnose high-severity production defects and develop and deploy rapid hotfixes to minimize downtime.
• Develop comprehensive automated unit tests in alignment with organizational standards and leverage tools such as SonarQube to drive continuous improvement in code quality.
• Build, deploy, and operate application components in the cloud, and support performance, scalability, and reliability.
• Modernize and upgrade legacy applications to enable cloud migration, including leading technical discovery, estimating upgrade effort, identifying dependencies, and creating development tickets.
• Develop reusable frameworks and patterns that accelerate the development and maintenance of web services and future project delivery.
• Contribute to and maintain CI/CD pipelines to support consistent, automated builds, testing, and deployments.
• Support release, regression, and user acceptance testing activities and assist with deployment coordination.
• Create and maintain technical documentation, including design notes, deployment guides, and knowledge base content.
• Participate in Agile/SAFe ceremonies and collaborate with product owners, testers, and operations staff to improve delivery and system quality.

Non-Essential Functions:

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

About Us:

AttainX Inc. is a Women Owned Small Business (WOSB), CMMC Level 2, CMMI Level 3, ISO 9001:2015 certified QMS and Silver Level SAFe Partner. For more than 15 years, AttainX, Inc. has delivered emergent technologies, software products, and high-quality services that meet the needs of our Federal Government customers.

The last 5 years have shown significant company growth as we have increased our contracts portfolio and hold the “Best in Class” contract vehicles, GSA MAS and OASIS Small Business and 8(a) Pools 1, 2 and 3. In addition, we are prime on several Agency Specific IDIQs and BPAs with the National Oceanic and Atmospheric Administration, Department of Energy, Navy, Health and Human Service, USCIS and the Defense Intelligence Agency.

AttainX is dedicated to quality and best practices for the services we provide. We understand our people are the key ingredient to ensuring our customers Mission and Goals are met with excellence.

Benefits:

Competitive compensation and benefits packages including paid vacation, medical, dental, vision, matching 401K plan, tuition/training reimbursement, and Long & Short-Term Disability.

EEO Commitment:

AttainX is an equal employment opportunity employer, committed to providing a workplace free from discrimination based on Title VII of the Civil Rights Act, VEVRAA and Section 503, or other status protected by applicable federal, state, local, or international law. These protections also extend to applicants.

Accommodations:

Individuals with a disability who would like to request a reasonable workplace accommodation may send an email to Human Resources indicating the specifics of the assistance needed.

Physical Demands:

Sitting and working on a computer for long, continuous periods each day; effective communications by telephone, email, and face-to-face; standing, walking, and sitting; handling and feeling objects or controls; reaching; talking and hearing; lifting and/or moving up to 10 pounds; and specific vision abilities including close vision, distance vision, color vision, peripheral vision, depth perception, and the ability to adjust and focus.

Work Environment: The noise level in the work environment is usually moderate.