Java Software Engineer Contract Jobs in Manchester, NH

This is a hybrid role - qualified candidates must be available to spend a portion of their work week in our North Andover office.

To be considered, candidates must be legally eligible to work in the United States without the need for employer-sponsored visa or residency status, now or at any point in the future.

We want you!

DataServ / xFact is seeking a Software Engineer to join our engineering team. In this role, you will design and deliver scalable, high-performance solutions across the full application stack - from API gateways and identity management - to relational and analytics databases - to modern frontend interfaces. You will contribute to both greenfield development and the continued evolution of existing systems within a DevSecOps environment. The ideal candidate is a self-directed professional who thrives with autonomy - someone who can take ownership of a task and drive it to completion. Success in this role requires strong technical judgment, a commitment to quality, and the ability to collaborate effectively across teams.

About xFact/DataServ:

xFact and DataServ bring together nearly 40 years of experience delivering innovative technology solutions to public and commercial sectors. We combine a strong foundation in Technology with a fast growing, mission-driven team focused on building impactful solutions for our existing and growing customer base that spans the country. Our culture is collaborative, driven, and focused on doing meaningful work that creates real value.

Qualities we want in you:

team player • excellent written and verbal communicator • tech savvy • strategic thinker • service oriented • motivated • self-disciplined • professional • flexible in a fast-paced environment • works independently with minimal supervision • exhibits strong work ethics • detail oriented • handles demanding situations/timelines • organized • responsible/dependable • willing to receive/provide feedback to improve performance • supportive • strong desire to support and mentor

What you’ll do:

Application Development:

· Design, develop, and implement highly scalable components using Java, Golang, and Spring/Spring Boot.

· Build and maintain RESTful APIs and integrate with API gateways (KrakenD).

· Develop modern front-end experiences using Vue.js, Thymeleaf, and Datastar.

· Implement and maintain identity and access management solutions using Keycloak.

· Work with message queuing systems (RabbitMQ/AMQP) for asynchronous processing.

· Write clean, efficient, and well-documented code with comprehensive unit and integration tests.

Database Management:

· Work effectively with SQL Server, PostgreSQL, and ClickHouse - writing efficient queries, understanding execution plans, and collaborating with the DBA on schema and performance considerations.

· Optimize and maintain legacy systems; troubleshoot and debug applications.

Testing and Deployment:

· Develop and maintain automated tests to ensure product quality.

· Deploy containerized applications and configure NGINX for web serving and reverse proxy.

· Monitor the performance of live applications and make necessary adjustments.

Team Collaboration:

· Collaborate with internal teams and vendors to fix and improve products.

· Take ownership of tasks and drive them to completion with minimal supervision.

· Document development phases and participate in the entire application lifecycle.

What we require:

Education:

· Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent work experience.

Experience:

· 3-5 Years in Software Engineering

· Proven experience as a Full Stack Developer or similar role.

· Strong proficiency in Java and/or Golang with Spring/Spring Boot framework experience.

· Experience with JavaScript frameworks, particularly Vue.js; familiarity with Thymeleaf and Datastar.

· Hands-on experience with API gateways (KrakenD preferred) and identity providers (Keycloak preferred).

· Experience with relational databases (SQL Server, PostgreSQL) and analytics databases (ClickHouse).

· Familiarity with message brokers (RabbitMQ/AMQP) and web servers (NGINX).

· Experience with container technologies (Docker, Podman, Kubernetes).

· Experience with CI/CD tools such as GitHub Actions, GitLab CI, Jenkins, or Azure DevOps.

· Experience securing systems to compliance standards (e.g., FedRAMP/GovRamp, NIST 800-171, NIST 800-53)

Additional proficiencies we seek:

· Demonstrates excellent written and verbal communication skills, in both collaborative team and customer-facing environments.

· Self-motivated with the ability to work independently and take ownership of projects.

· Strong problem-solving and troubleshooting skills.

· Strong scripting skills (Python, Bash, VeldJS, or PowerShell).

· Familiarity with infrastructure as code (IaC) and automation tools (e.g., Terraform, Ansible) is a plus.

· Relevant cloud certifications (AWS, Azure) are a plus.

Why you’ll love us:

We care. We coach. We lead. DataServ, founded in 1986, continues to use this approach in all we do for our culture. It’s truly the people who make working here great. We are a collaborative environment and supportive of one another, providing flexibility when needed. As lifelong learners, promoting from within is a priority to provide our team members opportunities for internal mobility and growth. DataServ / xFact offer a competitive compensation plan including paid holidays, PTO, discretionary bonuses, 401K (with match), medical, dental, vision, life, STD, and LTD benefits along with many other inclusive benefits and perks!

DataServ is an equal opportunity employer and does not discriminate in hiring or employment, in accordance with the requirements of all applicable laws, including race, color, religion, national origin, ancestry, age, gender, marital status, military status, sexual orientation, disability, or medical condition.