Senior Jobs in US

We are looking for Backend Engineers to build and maintain a large scale 24x7 global infrastructure system that powers DoorDash's 3-sided marketplace of Consumers, Merchants and Dashers.We’re looking for Backend Engineers to work on both Product and Product Platform based teams. Product focused Engineers work at the intersection of product and infrastructure to solve key business problems with elegant technical solutions.

[Applicants: Over 200 applicants | Industry: Investment Management, Capital Markets, and Financial Services | Type: Full-time | Level: Mid-Senior level] C++ Software Engineer - ChicagoThe RoleVenture Search is proud to partner with a leading global proprietary trading firm operating at the intersection of technology, mathematics, and markets. You’ll collaborate closely with traders, researchers, and other engineers to design, optimize, and evolve high-throughput platforms that directly impact trading performance.What You’ll Be Working OnDesigning and developing low-latency, high-throughput C++ systemsPerformance optimization across the stack: CPU, memory, networking, and OSBuilding and tuning HPC-style architectures for real-time workloadsProfiling, benchmarking, and eliminating performance bottlenecksWriting clean, modern C++ for systems that demand correctness and speedWorking with cutting-edge hardware and Linux-based environmentsWhat We’re Looking ForStrong professional experience in modern C++ (C++17/20 or later)Deep understanding of low-level systems programmingProven experience with performance optimization and profilingSolid knowledge of computer architecture, concurrency, and memory modelsExperience with Linux internals, networking, or kernel-adjacent workAbility to reason about performance trade-offs in complex systemsNice to HaveBackground in proprietary trading, HFT, or market-driven systemsExperience with lock-free programming, custom allocators, or SIMDFamiliarity with RDMA, TCP/UDP tuning, or FPGA-adjacent workflowsStrong academic background in Computer Science, Engineering, or Mathematics

(10-20%)Create database tables, views, stored procedures, Data Transformation Service packages, and queries to support data driven applications and reporting. (5-10%)Perform any additional responsibilities as requested or assigned.

We place high value on training and professional development, encouraging you to broaden and strengthen your unique skill sets so you can fully realize your potential.Job DescriptionPerformance Contracting Group is seeking a dynamic and experienced Software Development Engineer in Test. This individual will be responsible for the following duties:Qualifications1-3 years of experience in Test Automation, Test Tooling and Infrastructure, or Development Deployment OperationsExperience in API testing from SOAP, RESTfulHands-on experience with designing and developing automated tests in Java or C# with frameworks like JUnit/TestNG or SeleniumHands-on experience with SQL query developmentMicrosoft MB-300 and MB-500Local to the Kansas City MetroThis role is not eligible for employment visa sponsorship.Basic RequirementsStrong understanding of software development, test methodologies, test design strategies, test automation framework, tools, and processes.Strong understanding of relational database, Microsoft SQL server and scripting.Solid understanding of Object Oriented Programming Languages.Proficient in Microsoft Office 365 suite.Creates and maintains automated test cases, executes test suites, reviews and diagnoses reported defects through CI/CD, and ensures overall system quality prior to a release.Participates and conducts peer reviews of test scriptsWorks with Architects, Business System Analysts, Developers, DevSecOps, Product Owners, and other department personnel to derive testing requirements throughout the SDLC.Review requirements, specifications, and technical development to identify, reproduce, debug, isolate and resolve system malfunctions to meet quality standards and verify fixes.Creates software artifacts including test plans, test cases, test procedures and test reports.Holds and facilitates test plan/case reviews with appropriate parties, including Business Analyst...

We build world class tools for macro portfolio managers, that play a core role in their investment decision making processes.Over the past three years, the Global Macro business has expanded significantly, and as a result, we are expanding the Macro Technology team. More broadly, you’ll join our Macro Technology team working with and learning from seasoned experts in supporting a complex global business.

[Applicants: Be among the first 25 applicants | Industry: Software Development, Defense and Space Manufacturing, and IT Services and IT Consulting | Type: Full-time | Level: Mid-Senior level] Serving Maryland and the Greater Washington D.C. area, SageCor Solutions (SageCor) is a growing company bringing complete engineering services and true full lifecycle System Engineering services to areas requiring (or desiring) nationally-recognized expertise in high performance computing, large data analytics and cutting edge information technologies.Active TS/SCI W/ Polygraph Required.Required Skills:Windows SApatching Windows components and 3rd party applicationsVulnerability scanning and remediationIISMicrosoft SQL Server 2019SQL DB quarries/scriptingScripting, Powershell primarily, Python may be helpful.Nlyte familiarity.

As experts in healthcare IT experts, Apex is committed to building systems for healthcare organizations to seamlessly communicate and exchange data across different systems and devices.Summary:We are looking for a Senior Systems Administrator.ResponsibilitiesEssential Job Functions:Installs new software releases, system upgrades, evaluates and installs patches and resolves software related problems.Performs system backups and recovery.Maintains data files and monitors system configuration to ensure data integrity.Expected to recommend and help define policies and protocols that lead to efficient operations and improve the integrity of the systems.Develops and maintains technical documents, including internal policies, procedures and build instructions.May be expected to develop and maintain scripts to automate work and perform it more efficiently.QualificationsNecessary Skills and Knowledge:Familiar with standard concepts, practices, and procedures within a particular field.Strong problem-solving skills and ability to plan and deliver technical solutions independently.Excellent written and verbal communication skills.Ability to manage multiple priorities and deliver under tight deadlines.Strong analytical skills and attention to detail.Minimum Qualifications:Bachelor’s degreeCertifications:AWS Solution Architect AssociateSalesforce Marketing Cloud Email SpecialistAWS Solution Architect ProfessionalCertified Cloud Security Professional (CCSP)At least 5 years of related experience.Clearance: Public TrustCitizenship: US Citizen by birth or naturalizationPay And BenefitsThe salary range for this position is $114,000 - $121,000 annually.At Goldbelt, we value and reward our team's dedication and hard work. As an employee, you'll enjoy a comprehensive benefits package, including medical, dental, and vision insurance, a 401(k) plan with company matching, tax-deferred savings options, supplementary benefits, paid time off, and professional development opportunities.

[Applicants: Be among the first 25 applicants | Industry: Telecommunications | Type: Full-time | Level: Mid-Senior level] Company OverviewAt Motorola Solutions, we believe that everything starts with our people. We’re a global close-knit community,

[Applicants: Be among the first 25 applicants | Industry: IT Services and IT Consulting | Type: Full-time | Level: Mid-Senior level] Job Description – Senior Solutions Architect – Technology TeamTitle:Senior Solutions ArchitectLocation:Nashville, TN

[Industry: Software Development | Type: Full-time | Level: Mid-Senior level] Join the Team Modernizing MedicineAtModMed, we’re not just building software—we’re reimagining the healthcare experience. Founded in 2010 by a practicing physician and a su

[Industry: Computer and Network Security | Type: Full-time | Level: Mid-Senior level] About UsZenity is the first and only holistic platform built to secure and govern AI Agents from buildtime to runtime. We help organizations defend against securit

[Industry: Defense and Space Manufacturing | Type: Full-time | Level: Mid-Senior level] Date Posted:2026-01-19Country:United States of AmericaLocation:US-MA-WESTFORD-WFD7 ~ 7 Technology Park Dr ~ BLDG 7Position Role Type:OnsiteU.S. Citizen, U.S.