Sr Java Backend Developer
Quick facts
- Pay
- $70 - $80/hr
- Type
- Full-time
- Location
- Vienna, Virginia
- Hours
- 40+ hours / week
- Skills
- Java, SQL, Docker
- Industry
- Information Technology — 686 open jobs
- Visa in listing
- H-1B
- Apply
- Free to apply — never pay anyone for a job offer or visa sponsorship
Job description
Job Title: Java Backend Engineer
Location: Vienna, VA ONSITE INTERVIEW REQUIRED
Type: Contract, long term expected
Compensation: W-2 or C2C, H1B ok, no OPT
Work Model: Hybrid – 3 days onsite and 2 days remote
Hours: 40 hours a week
Responsibilities
- Design, build, integrate, and maintain secure backend services and APIs supporting mobile, web, enterprise, and partner systems.
- Design for performance, reliability, resiliency, observability, quality, and responsiveness.
- Collaborate with cross-functional teams to define, design, and deliver sustainable technical solutions.
- Develop and maintain unit, integration, and automated tests to support reliable delivery.
- Apply secure coding, data protection, and engineering standards.
- Troubleshoot production defects, performance bottlenecks, integration issues, and complex service dependencies.
- Refactor code and conduct peer reviews to improve security, quality, readability, and maintainability.
- Contribute to solution design, technical documentation, and proof-of-concepts that support architectural decisions.
- Support services across testing, deployment, production troubleshooting, and continuous operational improvement.
- Participate in Agile ceremonies and advocate for adaptive planning, automation, reusable solutions, and continuous improvement.
- Share knowledge and support the development of less experienced engineers.
Requirements
- Strong Java experience, with Java 17 or newer preferred.
- Solid knowledge of enterprise Java, Spring, Spring Boot, web services, and RESTful APIs.
- Experience with automated testing frameworks and practices, such as JUnit and Mockito.
- Proficiency with Git and CI/CD tools such as Maven, Docker, Jenkins, GitHub, or Azure DevOps.
- Strong understanding of databases, SQL, and data integration patterns.
- Experience troubleshooting distributed systems and designing scalable, resilient, observable microservices.
- Experience developing cloud-native applications, with Microsoft Azure strongly preferred.
- Effective communication, independent prioritization, and collaboration skills, including the ability to explain technical concepts to non-technical audiences.
Company Description
System One is a leading provider of specialized, highly technical services and solutions to critical infrastructure, technology, life sciences, and government sectors. We partner with large private and public organizations who trust us to execute their complex, mission-critical initiatives through our outsourced services and workforce solutions.
Visa sponsorship record: System One Holdings, LLC
Sponsors actively| Fiscal year | H-1B LCAs | USCIS approvals | USCIS denials | PERM |
|---|---|---|---|---|
| FY2026 | 9 | 1 | 0 | — |
| FY2025 | 7 | 2 | 0 | — |
| FY2024 | 3 | 2 | 0 | — |
✔ System One Holdings, LLC filed 1 H-1B application for this kind of role (Software Developers) in the period above.
Also filed: E-3 Australian × 2 — a good sign for Australian (E-3), Chilean and Singaporean (H-1B1) candidates.
Roles they sponsor most
- director creative service operations2 LCAs · median $155k
- manager software quality engineering2 LCAs · median $129k
- technology specialist2 LCAs · median $93k
- bit engineer1 LCA · median $107k
- broadcast it engineer1 LCA · median $107k
Which visas can work for this job
Occupation: Software Developers (SOC 15-1252).
- Mentioned in the listing
H-1B
- H-1B cap-exempt employer
Regular cap-subject employer — a new H-1B needs to win the lottery in March (unless you already hold cap-counted H-1B status).
- TN (citizens of Canada and Mexico)
This kind of role may fit the USMCA profession “Computer Systems Analyst (or Engineer, for engineering-degree holders)” — it depends on the actual duties. No lottery, no cap; you need the matching degree or license.
- E-3 (Australia) and H-1B1 (Chile, Singapore)
This employer has filed before (E-3 Australian: 2). Same degree requirement as H-1B, but no lottery and a separate quota that is rarely filled.
- O-1 (extraordinary ability)
For candidates with awards, publications, press, a high salary or critical roles at distinguished organizations. No cap, no lottery; the employer files a petition.
- STEM OPT extension (F-1 students)
Requires an E-Verify employer. We didn't find this company in the E-Verify list — ask HR.
Salary vs prevailing wage
Level II (qualified)Software Developers · Washington-Arlington-Alexandria, DC-VA-MD-WV. Annual prevailing wages set by the Department of Labor (OFLC).
| Level | Prevailing wage | H-1B lottery odds* |
|---|---|---|
| Level I | $102,086 | ~15% |
| Level II | $127,462 | ~31% |
| Level III | $152,838 | ~46% |
| Level IV | $178,214 | ~61% |
This job pays $145,600–$166,400 a year (converted from an hourly rate, 2,080 hours) — that's Level II (qualified). In the wage-weighted H-1B lottery a Level II registration gets 2 entries; estimated selection chance about 31%.
* Odds are DHS projections for the FY2027 wage-weighted lottery (actual results vary by year and employer). Since the FY2027 cap season the H-1B lottery is weighted by wage level: Level I = 1 entry, II = 2, III = 3, IV = 4. The level is set by the offered wage against the prevailing wage for the occupation and worksite. Separately, a $100,000 fee for new H-1B petitions for workers outside the US was announced in 2025; as of September 2026 a federal court ruling keeps it unenforceable while appeals continue — check the current status.
Sources: U.S. Department of Labor OFLC disclosure data (H-1B/H-1B1/E-3 LCA, PERM), OFLC prevailing wage data, USCIS H-1B Employer Data Hub, E-Verify participating employers. Data loaded: LCA FY2024–FY2026, PERM, USCIS Data Hub, OFLC wages; updated 2026-10-03. Employers are matched by name, so records of companies with similar names can occasionally be mixed up. This is general information, not legal advice — talk to an immigration attorney about your case.