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Backend Engineer Java Jobs in Columbia, MD (NOW HIRING)

teKnoluxion

Backend Software Engineer

Gaithersburg, MD · On-site

$107K - $195K/yr

Overview Backend Software Engineer Gaithersburg, MD Active TS (SCI eligibility) clearance and ... Design, develop, test, and maintain backend services using Java or Python * REST API Development:

teKnoluxion

Backend Software Engineer

Gaithersburg, MD

$107K - $195K/yr

Backend Software Engineer Gaithersburg, MD Active TS (SCI eligibility) clearance and eligibility to ... Design, develop, test, and maintain backend services using Java or Python * REST API Development:

teKnoluxion

Backend Software Engineer

Gaithersburg, MD

$107K - $195K/yr

Overview Backend Software Engineer Gaithersburg, MD Active TS (SCI eligibility) clearance and ... Design, develop, test, and maintain backend services using Java or Python * REST API Development:

Guru Schools

Sr. Backend Java Developer

Mclean, VA · On-site

$121K - $158K/yr

Senior Backend Java Developer Location: McLean, VA - Onsite (5 days/week) | Local candidates only Key Responsibilities * Design, build, and maintain backend services using Java and Spring Boot

Exequt

Back-End Java Developer

Baltimore, MD · Hybrid

$119K - $155K/yr

This is a great opportunity for a skilled Java engineer ready to take ownership of meaningful, production-grade work. Primary Responsibilities * Design and implement RESTful APIs and backend services ...

Guru Schools

Senior Backend Java Developer

Mclean, VA · On-site

$121K - $158K/yr

Senior Backend Java Developer Location: McLean, VA - Onsite (5 days/week) | Local candidates only Key Responsibilities * Design, build, and maintain backend services using Java and Spring Boot

Agile Defense

Software Engineer (Java, OpenFGA)

Rosslyn, VA · Hybrid

$59 - $81/hr

Software Engineer (Java, OpenFGA) Location: Hybrid, Rosslyn, VA Clearance Level: Secret, Must Have ... Design, develop, and maintain backend microservices and distributed systems to support enterprise ...

NTT DATA Services

Backend / API Engineer

Bethesda, MD · Remote

$68K - $141K/yr

The engineer works closely with product owners, solution architects, and cross-functional ... Proficiency in Python, Java, or similar languages used for backend and API development

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How much do backend engineer java jobs pay per hour?

As of Jun 18, 2026, the average hourly pay for backend engineer java in Columbia, MD is $54.22, according to ZipRecruiter salary data. Most workers in this role earn between $48.17 and $62.50 per hour, depending on experience, location, and employer.

What does a Backend Engineer Java do?

A Backend Engineer Java is responsible for developing and maintaining the server-side logic, databases, and application programming interfaces (APIs) using the Java programming language. They ensure that the backend of web applications or software systems is efficient, secure, and scalable. Their work often involves collaborating with frontend developers, designing system architecture, and optimizing performance to handle large volumes of user requests. Backend Java engineers often use frameworks such as Spring or Hibernate and work with databases like MySQL or PostgreSQL.

What is the difference between Backend Engineer Java vs Backend Developer Java?

AspectBackend Engineer JavaBackend Developer Java
Primary FocusDesigning, developing, and maintaining server-side applications and systemsImplementing and coding backend functionalities based on specifications
ResponsibilitiesSystem architecture, performance optimization, API developmentWriting code, debugging, integrating databases
Skills & CertificationsJava, Spring, REST APIs, SQL, cloud platformsJava, Spring, SQL, version control, testing tools
Work EnvironmentCollaborative teams, project planning, architecture designCode implementation, debugging, feature development

Both roles require Java expertise and similar certifications, but Backend Engineer Java typically involves higher-level system design and architecture responsibilities, while Backend Developer Java focuses more on coding and implementing features. Employers often see these roles as complementary within software development teams.

What are the key skills and qualifications needed to thrive as a Backend Engineer Java, and why are they important?

To thrive as a Backend Engineer Java, you need a solid understanding of Java programming, data structures, algorithms, and experience with backend frameworks, typically supported by a relevant degree or industry experience. Familiarity with tools and technologies such as Spring Boot, RESTful APIs, relational databases, and build systems like Maven or Gradle is commonly required. Problem-solving ability, teamwork, and effective communication are crucial soft skills for excelling in collaborative and fast-paced development environments. These combined skills ensure robust, scalable backend systems that meet business needs and integrate smoothly within larger software architectures.

How does a Backend Engineer Java typically collaborate with frontend developers and other stakeholders in a project?

As a Backend Engineer Java, you will regularly collaborate with frontend developers to ensure seamless integration between server-side logic and user interfaces. This often involves participating in design discussions, clarifying API requirements, and troubleshooting integration issues. You’ll also engage with product managers, QA engineers, and sometimes DevOps teams to align on project goals, timelines, and deployment strategies. Effective communication is key to translating business requirements into reliable backend solutions and maintaining smooth workflows across the team.
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Backend Engineer Java jobs near you

Staff Backend Engineer

Twenty Technologies, Inc

Arlington, VA • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 29 days ago

Job description

About the Company
America is under sustained cyber attack. Our adversaries infiltrate our networks, steal our IP, and degrade the digital infrastructure that modern life runs on. They've learned-correctly-that those attacks rarely produce consequences.
Twenty was founded to change that, by making our adversaries think twice before they attack us. Our vision is American and allied primacy in cyberspace-a future where they cannot contest us, deterrence is assured, and the free world remains secure.
Founded in 2024, Twenty Technologies (www.twenty.io) industrializes offensive cyber operations for the U.S. and its allies. Headquartered in Arlington, Virginia, Twenty has raised $38M from Caffeinated Capital, General Catalyst, and In-Q-Tel.
Role Summary
You'll design and build backend systems that turn real-time operational data into mission-critical capabilities. This role owns core services that need to be fast, reliable, and secure-operating across cloud and on-prem environments. You'll make high-leverage architecture decisions, drive technical execution, and raise the bar through mentorship and engineering standards. You'll partner closely with product, operations, and frontend teams to ship systems that work under real-world constraints.
Who You Are
  • You're motivated by high-stakes, real-world outcomes-especially in national security and cyber operations.
  • You take ownership: you push projects from ambiguous problem to shipped, measured capability.
  • You bring calm, high-judgment leadership during incidents, tradeoff discussions, and tight timelines.
  • You hold a high bar for reliability, security, and maintainability-and you help others meet it.
  • You communicate clearly with both technical and non-technical partners.
  • You prefer simple, scalable designs and know when complexity is justified.
  • You enjoy mentoring and leveling up engineers through feedback, pairing, and strong technical direction.
What You'll Do
  • Architect and build high-throughput backend services that process real-time operational data.
  • Lead technical design reviews and choose pragmatic approaches for new features and system improvements.
  • Design event-driven and distributed systems that are resilient, observable, and performance-tuned.
  • Define stable APIs for internal and external consumers, partnering with frontend for seamless integration.
  • Improve engineering excellence through code reviews, standards, testing strategy, and incident practices.
  • Build and maintain CI/CD workflows that enable rapid, secure delivery.
  • Troubleshoot complex production issues, lead incident response, and drive durable fixes.
  • Partner with product and operational stakeholders to translate needs into deliverable technical plans.
  • Contribute to technical strategy and roadmap planning across backend services.
  • Support hiring by participating in interviews and helping define what "great" looks like.
Must Have
  • You have 10+ years building scalable backend systems in production environments.
  • 4+ years of experience in Golang, or 4+ years writing server-side business logic in an object-oriented language (Java, Kotlin, C#, Python) or systems language (C, C++, Rust) with strong system design aptitude.
  • You have led technical initiatives end-to-end, including architecture, execution, and delivery.
  • You have experience designing distributed systems (e.g., event-driven architectures, messaging, consistency tradeoffs).
  • You have built cloud-native services and operated them in production (AWS preferred).
  • You have strong security fundamentals: secure coding, threat modeling, and defensible design choices.
  • You have a track record mentoring engineers through code reviews, technical guidance, and feedback.
  • You have strong communication skills and can align teams around clear technical decisions.
Nice To Have
  • You have experience designing data models and queries in graph databases (e.g., Neo4j, AWS Neptune).
  • You have used relational databases (ex: Postgres, MySQL, or MariaDB) to solve business problems and are able to reason about query performance.
  • You've worked on defense, intelligence, or security-focused products with real operational users.
  • You've shipped large-scale data processing systems (streaming, near-real-time analytics, or similar).
  • You've integrated ML/AI capabilities into production systems in a practical, measurable way.
  • You have open-source contributions or personal projects that demonstrate strong engineering craft.
Tech Environment (You Might Work With)
  • Go (Golang) business logic
  • AWS and hybrid cloud/on-prem deployments
  • Event-driven messaging (e.g., NATS)
  • Containers and orchestration (Docker, Kubernetes)
  • GraphQL and service-to-service APIs
  • Graph databases (Neo4j, AWS Neptune) and complex relationship data
Security / Work Environment
This role requires eligibility to obtain and maintain a U.S. Government security clearance. This role may involve work in a controlled environment.
Benefits
What's on the table:
  • Health. Medical, dental, and vision plan options. Life / AD&D, disability coverage options.
  • Family. Paid parental leave for eligible full-time employees. 12 weeks for birthing parents, 4 for non-birthing parents, 6 weeks for adoptive, foster, or intended parents through surrogacy.
  • Vacation. Paid holidays and flexible PTO. Take what you need.
  • Retirement. 401(k) with pre-tax and Roth options. HSA/FSA options, dependent care FSA.
  • At the office. Commuter benefits. On-site garage parking. Bike storage. Building fitness center. Desk setup stipend.

Benefits vary by location, role, and eligibility. Full plan details provided during the interview and offer process.
If this role sounds like you, apply and share with us your interest.
Some positions may require eligibility to obtain a U.S. Government security clearance. Any clearance requirement will be listed in the role description.
Twenty is an equal opportunity employer. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, veteran status, disability, or any other protected status.
If you need a reasonable accommodation during the hiring process, let us know and we will work with you.

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