High Voltage Engineer A.C. CoyHigh Voltage EngineerPittsburgh, PennsylvaniaFull timeStrong communication skills with the ability to interact directly with customers, cross-functional engineering teams, and factories to interpret technically complex projects. Preferred Experience: Prior experience with high-voltage dead tank circuit breakers, switchgear or substation equipment.
Cobol/IDMS Developer (Remote) A.C. CoyCobol/IDMS Developer (Remote)Indianapolis, IndianaRemoteDetermine computer user needs; analyze system capabilities to resolve problems on program intent, output requirements, input data acquisition, programming techniques and controls; prepare operating instructions; design and develop compilers and assemblers, utility programs, and operating systems. Conduct multidisciplinary research and collaborate with equipment designers and/or hardware engineers in the planning, design, development, and utilization of electronic data processing systems for product and commercial software.
Cloud Security Engineer/Architect (Hybrid) A.C. CoyCloud Security Engineer/Architect (Hybrid)Falls Church, VirginiaAPI-First Automation: Deep expertise in building "glue code" that connects disparate COTS and custom applications via secure, automated APIs to streamline cross-functional business activities. Responsibilities: Security Architecture Vision: Lead the design of a global Zero Trust architecture, ensuring robust identity governance (IAM), network micro-segmentation, and data encryption across AWS, Azure, or GCP.
Global Payroll Director A.C. CoyGlobal Payroll DirectorPittsburgh, PennsylvaniaFull timeIdeal candidates will have experience providing expertise regarding payroll operations and compliance for a company with employees spanning multiple countries including those in Europe, East Asia, and the Middle East. Responsibilities: Serve as subject matter expert on all payroll operations and compliance across U.S. and EMEA/APAC locations.
Payroll Analyst - Multi-state A.C. CoyPayroll Analyst - Multi-statePittsburgh, PennsylvaniaFull timeInvestigate and resolve payroll discrepancies, record inconsistencies, and employee inquiries related to payroll payments, deductions, taxes, and year-end tax documents . Thorough knowledge of payroll processes, payroll taxation, wage and hour laws, and compliance requirements for multi-state and multi-jurisdictional payroll environments.
Java Developer – front-end (Remote) A.C. CoyJava Developer – front-end (Remote)Indianapolis, IndianaRemoteOverview: Tier One Technologies is seeking a Java Developer with a strong front-end development background to support our US Government client. Qualifications: A degree from an accredited College/University in Software Engineering, Computer Science, Business, or related discipline.
Sr. Java Developer (Remote) A.C. CoySr. Java Developer (Remote)Indianapolis, IndianaRemoteExperience developing front-end applications using Angular (v8+), including TypeScript, components, services, and reactive forms. Strong verbal and written communication skills, problem solving skills, customer service and interpersonal skills.
Microsoft Windows Engineer (Remote) A.C. CoyMicrosoft Windows Engineer (Remote)Washington, DCRemoteOverview: The Microsoft Windows Engineer serves as the lead technical specialist for the Microsoft endpoint and identity ecosystem supporting this effort, including Windows workstation engineering, Intune, Windows Autopilot, Group Policy, Entra ID/Active Directory integration, passwordless authentication, hardware-backed credentials, and Windows endpoint telemetry. This role is responsible for engineering secure Windows endpoint baselines, device provisioning and compliance workflows, authentication and access controls, and the operational integration of Windows devices into the company's security monitoring and incident response framework.
Service Desk Engineer (Remote) A.C. CoyService Desk Engineer (Remote)Washington, DCRemoteEngineer and maintain logging, telemetry, monitoring, and audit capabilities to track endpoint activity, enrollment, user authentication, network access, and compliance posture. Engineer endpoint baselines and technical controls that reduce risk of unauthorized discovery, lateral movement, malicious credential use, persistence, and defense evasion.
Apple/macOS Engineer (Remote) A.C. CoyApple/macOS Engineer (Remote)Washington, DCRemoteOverview: The Apple/macOS Engineer is responsible for engineering and maintaining the secure macOS endpoint environment, including workstation image development, macOS baseline configuration, JAMF administration, Apple Business Manager integration, macOS device enrollment, patching, compliance, authentication support, logging, and operational documentation. This role ensures that macOS endpoints used by on-site and remote users are securely configured, consistently provisioned, fully inventoried, and integrated with VDI, authentication, monitoring, and incident response requirements.
LINUX ADMINISTRATOR - HYBRID A.C. CoyLINUX ADMINISTRATOR - HYBRIDPittsburghIdeal candidates must have 1+ years Redhat OpenShift experience and 2+ years of experience supporting a Redhat/OEL enterprise environment (100+ servers). Experience Required: Linux Server Administration (Redhat/Oracle Enterprise Linux (OEL)) - 2+ years.
Google Cloud Architect (hybrid) A.C. CoyGoogle Cloud Architect (hybrid)Raleigh, North CarolinaCurrent knowledge of artificial intelligence (AI) and industry trends, with experience applying modern technologies and practices to accelerate software delivery, including Agile, Test-Driven Development (TDD), and Continuous Integration/Continuous Delivery (CI/CD). Responsibilities: Design & Architect - Build cloud solutions (IaaS, PaaS, SaaS) aligned with a Microservices/SOA framework; produce implementation-ready documentation including bill of materials and cost estimates.
QA Customer Acceptance Tester A.C. CoyQA Customer Acceptance TesterWashington, DCPerform Customer Acceptance Testing (CAT), including reviewing Technical Requirement Documents (TRDs), developing and updating test scripts, conducting production validation through smoke and functional testing, documenting test results, and providing required testing artifacts, TLSC documentation, and Requirements Traceability Matrices (RTMs). Experience developing and executing manual and automated test scripts, performing Customer Acceptance Testing (CAT) and User Acceptance Testing (UAT), documenting test results, and delivering comprehensive test artifacts.
Microservices Developer (Remote) A.C. CoyMicroservices Developer (Remote)Alexandria, VirginiaRemoteOverview: Tier One Technologies is seeking a Microservices Developer to support our US Government client. Responsibilities: Design, build, and maintain Spring Boot microservices using Java 21 and Java 25.
Business Applications Lead/NetSuite Administrator A.C. CoyBusiness Applications Lead/NetSuite AdministratorPittsburgh, PennsylvaniaFull timeOur ideal candidate will have 3+ years of NetSuite Administration experience, with strong experience managing a SaaS/business application portfolio, partnering with internal stakeholders, interfacing with software vendors, and supporting new system integrations. Responsibilities: Direct administration, configuration, and operational support of the corporate SaaS and business systems portfolio, including ERP, CRM, reporting, and operational tooling.
IT Support Specialist - on in Pittsburgh, PA (Local Candidates Only) A.C. CoyIT Support Specialist - on in Pittsburgh, PA (Local Candidates Only)Pittsburgh, PennsylvaniaContractorAssociates degree in business, MIS or IT preferred; HS diploma with equivalent experience required. work closely with the escalation team and project managers to resolve tickets.
Sales Billing Administrator - onsite west of Pittsburgh, PA A.C. CoySales Billing Administrator - onsite west of Pittsburgh, PAPittsburgh, PennsylvaniaContractorQualifications: Education: Bachelor’s degree in business administration, Supply Chain Management, or equivalent experience 2-4 years' experience with sending/processing invoices and purchase orders. Their duties include processing payments on behalf of acustomer, maintaining organized financial records to aid reporting, and calculating bill totals by looking through previous financial statements.
Performance Test Engineer (remote) A.C. CoyPerformance Test Engineer (remote)Arlington, VirginiaRemoteExperienced in developing and maintaining comprehensive software quality documentation, including requirements specifications, test plans, test cases, test scripts, test procedures, and detailed test execution and results reports. Provide enterprise-wide support for performance testing and test automation initiatives across multiple teams and projects, leveraging LoadRunner for performance and load testing and UFT for functional and regression test automation.
Accountant - Onsite A.C. CoyAccountant - OnsiteLa Porte, IndianaContractorIdeal candidates must have 2+ years of finance accounting including journal entries and reconciliations as well as have completed a bachelor's degree in accounting or related field. Experience Required: Minimum of 2 years experience in finance accounting including journal entries and reconciliations.
Cloud Security Engineer/Architect (Remote) A.C. CoyCloud Security Engineer/Architect (Remote)Falls Church, VirginiaRemoteThreat Modeling & Resilience: Conduct deep-dive threat modeling for complex cloud-native systems, simulating advanced persistent threats (APTs) and "blast radius" scenarios to strengthen system resilience. AI-Native Security Strategy: Architect specialized security frameworks for AI/ML pipelines, focusing on data privacy for training sets, model integrity, and securing LLM-integrated applications against emerging attack vectors.