OCCAS Developer
Gainesville, VA
Experience: 0
Category: Information Technology
Contractor Work Model: Onsite
Brand: 851-Rockville-S1
Shift: On-Site
Job ID: 344452
Date Posted: 12/23/2025
Shortcut: http://jobs.systemone.com/AoSvvV
Oracle OCCAS Developer
Location: Remote (Gainesville, VA)
Employment Type: Direct Hire
Work Authorization: US Citizens, Green Card, or H1B candidates considered
Overview
We are seeking an experienced Oracle OCCAS Developer to support one of our largest enterprise OCCAS customers. This role requires deep hands-on expertise with the Oracle OCCAS technology stack, with a strong emphasis on OCCAS SIP Servlets. The ideal candidate is technically strong, detail oriented, and able to communicate clearly with both technical and non technical stakeholders.
Key Responsibilities
• Design, develop, and maintain applications using Oracle OCCAS (Oracle Communications Converged Application Server)
• Develop and support SIP Servlets for real time communications applications
• Work extensively with Java, Oracle WebLogic, and Oracle Coherence within the OCCAS environment
• Troubleshoot, debug, and optimize OCCAS based applications in production and non production environments
• Collaborate with cross functional teams including engineering, operations, and customer stakeholders
• Participate in requirements gathering, technical design discussions, and solution documentation
• Ensure high availability, performance, and reliability of OCCAS applications
• Provide clear written and verbal communication when documenting solutions or discussing technical issues
Required Qualifications
• Expert level experience with Oracle OCCAS, including SIP Servlets
• Strong Java development background
• Hands on experience with Oracle WebLogic and Oracle Coherence
• Experience supporting large scale or enterprise OCCAS deployments
• Strong troubleshooting and problem solving skills
• Excellent written and verbal communication skills
Preferred Qualifications
• Experience supporting telecom or real time communications platforms
• Familiarity with SIP signaling, call flows, and session management
• Experience working directly with enterprise customers
System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.
System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.
#M1
#LI-CS1
#DI-CS1
Ref: #851-Rockville-S1
-
Sr Java Developer/ SDET
Reston, VA
Job Title: Sr Java Developer/ SDET Type: 6+ month Contract Compensation: $79.50 Contractor Work Model: Mainly Remote, Hybrid days- Reston, VA Senior Java Developer / SDET ALTA IT is seeking a hands-on Senior Java Developer / SDET to join a cross-functi...
Date Posted: 12/20/2025 Recommended
-
Android Developer
Ashburn, VA
Job Title: Android Developer Location: Hybrid Work Model Reporting to Vienna, VA, Winchester, VA, or Pensacola, FL Pay Rate: Open to Both C2C and W2 options Position Type: Multiyear Contract Description To support the development, maintenance, and enha...
Date Posted: 10/08/2025 Recommended
-
DevOps/ Automation Engineer
Gainesville, VA
Title: DevOps/ Automation Engineer Clearance: TS/SCI with ability to obtain a CI Poly Location: Onsite in Reston, VA Salary: up to $250K Certification: Sec+ (or 8570 IAT Lvl 2 equivalent) Direct Hire Contact: Cdinnocenti@altaits.com DevOps/Automation e...
Date Posted: 12/18/2025 Recommended
-
SailPoint Developer
Fort Belvoir, VA
SailPoint Developer Fort Belvoir, VA - hybrid (2-3 days a week onsite) Secret Clearance is required to start Must be Security+ certified SailPoint Developer Role requires Java Development Experience. We are looking for candidates who are true developer...
Date Posted: 12/11/2025 Recommended
-
Sr Full Stack Java AWS Kubernetes Developer
Reston, VA
Job Title: Sr Java AWS Kubernetes Developer Type: Contract Compensation: $79.50 Contractor Work Model: Mostly remote, Hybrid days- Reston, VA Job Summary Seeking a senior Full Stack Java Developer to support multiple enterprise projects and assist team...
Date Posted: 12/20/2025 Recommended
-
Salesforce Developer
Tulsa, Oklahoma
System One has an exciting Salesforce Developer opportunity with a partner in the Tulsa, OK area. Successful candidates must be able to provide proof of ability to work in the U.S. without sponsorship. This position is not open to corp-to-corp, subcont...
Date Posted: 12/19/2025 Recommended
-
MuleSoft Developer
Lenexa, KS
Job Title: MuleSoft Developer Location: Lenexa, KS Contractor Work Model: Hybrid Onsite Job Summary: System One is seeking a MuleSoft Developer for a long-term, hybrid-onsite opportunity in Lenexa, KS. The MuleSoft Developer builds, enhances, and suppo...
Date Posted: 12/01/2025 Recommended
-
SME Oracle APEX Developer
Washington, DC
Oracle APEX Developer 100% Onsite in Washington DC 20036 Per Federal Contract U.S. Citizenship Required Must be able to pass federal background investigation (3-8 weeks) for DOJ Public Trust Clearance 6- 18 month Contract (Possibly Permanent based on p...
Date Posted: 12/16/2025 Recommended
-
ServiceNow Developer
Alexandria , Virginia
ServiceNow Developer Location: Alexandria, VA or D.C. (hybrid) Hourly Rate: $50/HR Min Citizenship Status Required: Must be a U.S. Citizen per client requirement ALTA IT Services has a long-term contract opening for a ServiceNow Developer. This is a hy...
Date Posted: 12/05/2025 Recommended
-
Full-Stack AWS Developer
McLean, Virginia
Job Title: Full-Stack AWS Developer Location: Remote (EST) Type: Contract To Hire Senior Full Stack Developer What You Will Do: The Cloud Applications Full-Stack AWS Developer will work closely with clients, digital leaders, solutions architects, and t...
Date Posted: 12/15/2025 Recommended
-
AWS Cloud Software Developer
Baltimore, MD
AWS Cloud Software Developer 100% Remote GC Holders and US Citizens per client contract Key Responsibilities: • Optimize a scalable, reliable, and secure AWS native cloud system • Refine infrastructure configuration as IaC using Terraform • Help produc...
Date Posted: 11/14/2025 Recommended
-
Salesforce Agentforce Developer
Columbia, MD
Salesforce Agentforce Developer Multiyear Contract Hybrid- One day a week in MD/DC/VA client offices Candidates must reside in the local DMV area W2 Hourly Pay Rate: $50/hr. ALTA IT Services has a 12-month+ contract opening for a Salesforce Agentforce ...
Date Posted: 12/18/2025 Recommended
-
Power Automate Developer
Topeka, KS
Job Title: Power Automate Developer Location: Topeka, KS Type: Contract Contractor Work Model: Remote We are seeking an experienced Power Automate Developer to support the modernization and migration of existing UIPath RPA workflows into the Microsoft ...
Date Posted: 12/08/2025 Recommended
-
ADABAS Database Specialist/DB2
Bethesda, Maryland
Job Title : ADABAS Database Specialist/DB2 Location: US-Remote (EST Hours) Clearance Requirements: Successful completion of a Public Trust background investigation and/or a Public Trust clearance. Min Citizenship Status Required: Must be a U.S. Citizen...
Date Posted: 10/03/2025 Recommended
-
Nuclear Mechanical Maintenance Developer/Instructor
Bellevue, WA
Job Title: Nuclear Mechanical Maintenance Developer/Instructor Location: Bellevue, WA Type: Contract Compensation: $37 - $74 hourly Contractor Work Model: Remote System One is seeking to contract with a Nuclear Mechanical Maintenance Developer/Instruct...
Date Posted: 10/27/2025 Recommended
-
Network Engineer
McLean, Virginia
Job Title: Network Engineer Location: Arlington, VA Type: Contract To Hire Contractor Work Model: Onsite Security Clearance: Active Top Secret Duties and Responsibilities: Lead engineering and installation (E&I) support for inside/outside plant LAN wir...
Date Posted: 12/04/2025 Recommended
-
Lead Sterling B2B ITX Engineer - Hybrid - 1 day month onsite
Reston, VA
Job Title: Lead Sterling B2B ITX Engineer Location: REMOTE Type: Contract To Hire Compensation: NEGOTIABLE Contractor Work Model: Remote Interview Process: Two. First is via Teams. 2nd and final interview is onsite in DC - candidate must be able to do ...
Date Posted: 11/25/2025 Recommended
-
Senior Business Analyst - Salesforce
Parsippany, New Jersey
Job Title: Senior Business Analyst - Salesforce Location: Parsippany, New Jersey Type: Contract Compensation: $70 - $85 hourly Contractor Work Model: Remote ( candidates need to be local to Parsippany to attend on-site meetings as needed) Summary: We a...
Date Posted: 12/14/2025 Recommended
-
IT Senior Specialist-DX Automation
Erlanger, Kentucky
Job Title: Senior Specialist- Digital Transformation (DX) Automation Location: Erlanger, Kentucky Type: Direct Hire Compensation: $92500 - $115625 annually Contractor Work Model: Hybrid Hours: M-F 3 days onsite in Erlanger USC or GC, no H1B sponsorship...
Date Posted: 11/25/2025 Recommended
-
Sr. Administrator (Azure, OpenShift)
Alexandria, Virginia
Job Title: Sr. Administrator Location: Alexandria, Virginia Type: 6 + months Contract To Hire Contractor Work Model: Onsite (with some flexibility) Security Clearance: Secret Clearance US Citizenship Required We are seeking a Sr. Administrator with str...
Date Posted: 12/12/2025 Recommended
-
Senior Network Engineer
McLean, Virginia
Job Title: Senior Network Engineer Location: Arlington, VA Type: Contract To Hire Contractor Work Model: Onsite Security Clearance: Active Top Secret Clearance Duties and Responsibilities: Lead the design and implementation of OMC network infrastructur...
Date Posted: 12/04/2025 Recommended
-
Oracle ERP Security Analyst
Vienna , VA
Location: Hybrid Work Model Reporting to Vienna, VA or Pensacola, FL (3 days/week onsite) Pay Rate: Open to Both C2C and W2 options Position Type: Multiyear Contract Description: We are seeking a skilled contractor to join our client’s Finance Technolo...
Date Posted: 12/16/2025 Recommended
-
System Administrator Lead
McLean , Virginia
Job Title: System Administrator Lead Location: Arlington, Virginia Type: Contract To Hire Contractor Work Model: Onsite Security Clearance: Top Secret w/ SCI eligibility Duties and Responsibilities: Leads a team of system administrators responsible for...
Date Posted: 12/04/2025 Recommended
-
GIS Analyst/Programmer
Towson, Maryland
Job Title: GIS Analyst/Programmer Location: Towson, Maryland Type: Contract Compensation: Negotiable Contractor Work Model: Hybrid, 2 days onsite, 3 days remote Local County Government client is seeking a qualified Senior GIS Programmer / Systems Analy...
Date Posted: 12/18/2025 Recommended
-
Sr Program Manager - Healthcare
Reston, VA
Job Title: Program Manager - Healthcare Location: Reston, VA – OFFSITE/REMOTE but need to be onsite 3-4 times/month for team meetings Role Type: Contract 12+ months – (long-term extensions and/or permanent conversion highly likely) Experience: 10+ year...
Date Posted: 12/10/2025 Recommended
-
Onsite Support Technician
Spring Grove, Pennsylvania
Job Title: Onsite Support Technician Location: Spring Grove, Pennsylvania Type: Contract – Long Term Contractor Work Model: Onsite Hours: Daytime – 8 AM – 5 PM General Position Description: Provide high-quality onsite IT support to internal users, focu...
Date Posted: 12/03/2025 Recommended
-
Sr AI Architect
Reston, Virginia
Job Title: Sr Doman Architect Location: Washington, DC AI Architect Location: Reston, VA (Hybrid – onsite roughly once every 1–2 months) Duration: 12-Month Contract About the Role We’re seeking an experienced AI Domain Architect to help design and scal...
Date Posted: 10/20/2025 Recommended
-
High Speed Guard Engineer
Springfield, VA
Job Title: High Speed Guard Engineer Location: Springfield, VA Type: Contract To Hire Contractor Work Model: Onsite Security Clearance: Active TS/SCI High Speed Guard Engineer to support the implementation and administration of Everfox High Speed Guard...
Date Posted: 12/04/2025 Recommended
-
Pipe Stress Engineer
Naperville, IL
Job Title: Pipe Stress Engineer Location: Naperville, IL Work Model: Remote or Hybrid Options Available System One is seeking an experienced Pipe Stress Analysis Engineer to support one of our key clients in the power and energy sector. This position i...
Date Posted: 11/24/2025 Recommended
-
Informatica ETL Lead
Phoenix, AZ
Position Title: Informatica ETL Lead – Regulatory Risk & Compliance Provide locations/flexible work by preference: 1. Most preferred - Phoenix - Biltmore AND North Texas Market TX - Dallas Innovation Center - Luna Rd AND Pittsburgh PA - Two PNC Plaza 2...
Date Posted: 10/03/2025 Recommended