Backend development Jobs

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Voice AI Engineer - W2 ONLY

Pronix Inc

Overland Park, Kansas, USA

Contract

W2 ONLY Job Title: Voice AI Engineer Voice virtual assistants Location: Overland Park, KS Duration: 12+ Months Position Summary We are seeking a Voice AI Engineer with strong expertise in developing voice virtual assistants, building intelligent workflows using Large Language Models (LLMs), and deep familiarity with modern cloud-native technologies. This role is ideal for someone who thrives in fast-paced environments, enjoys solving complex problems at scale, and is excited about the future

Full Stack Developer

BGI, LLC

Nellis Air Force Base, Nevada, USA

Full-time

Position Summary As a member of the BGI team, you will participate in dyamic Operational Test & Evaluation (OT&E) programs for the F-35 Joint Strike Fighter (JSF) aircraft at Nellis AFB, NV. In this position, you will provide the Air Force Operational Test and Evaluation Center (AFOTEC) Detachment 6 and the United Operational Test Team (UOTT) with full stack software development support. Job Responsibilities Develop and maintain front-end applications using HTML, CSS, and JavaScript.Utilize mode

.NET FullStack Developer

Photon

Dallas, Texas, USA

Full-time

Job Title: .NET FullStack Developer Location: Dallas, TX (Onsite) We are seeking a highly skilled Full Stack Developer with deep expertise in .NET 8 (C#), Xamarin Native, and Appium test automation. This role requires a professional who can confidently deliver across mobile and backend systems, write maintainable code, implement automated testing strategies, and work with modern DevOps practices. Experience with Git, RESTful API design, and CI/CD via Azure Pipelines is essential.Key Responsibil

Engineering Manager

Mitchell Martin, Inc.

Overland Park, Kansas, USA

Full-time, Contract

Title: Engineering Manager Location: Midwestern Region (Onsite) Employment Type: Full TimeCompensation Pay Range:$140000-$200000/YrsDescription * Collaborate with leadership to plan and prioritize work from the product roadmap. * Oversee cross-department operations to ensure timely and complete project delivery. * Manage the team's backlog and facilitate agile development ceremonies. * Conduct regular performance evaluations and 1:1 meetings with team members. * Contribute to codebase developmen

Principal Cloud Software Engineer

ManTech

Denver, Colorado, USA

Full-time

Mantech seeks a motivated and customer-focused Principal Cloud Software Engineer to join our team in Denver, CO or Chantilly, VA. In this role, you will design, develop, and support cloud-based backend applications, ensuring secure and scalable solutions for mission-critical systems. Responsibilities include but are not limited to: Design, develop, and maintain production backend applications for the ServiceNow platform using Java Deploy and manage services in cloud environments, with an emph

Software Engineer

Quantelux

Remote

Full-time

Company Description Quantelux is a consultancy firm that helps global enterprises cope successfully with today's competitive realities and challenges by design, build, educate, demonstrate, and deploy innovative technology products, integrated architectural solutions, and proven methodologies and tools in IT governance, information content and data management, software development, process improvement techniques, and infrastructure services management. Role Description This is a full-time remote

Senior Backend Software Engineer

NasTech Global, Inc.

Palm Beach Gardens, Florida, USA

Full-time

Job Title: Senior Backend Software Engineer Location: Palm Beach Gardens, FL(Hybrid) Job Type: Full-Time Minimum Requirements Minimum of 10 years of experience in software development, demonstrating proficiency in building scalable full stack applications Bachelor's degree preferred Strong experience/knowledge of Python and C# (Rust is nice to have) Experience with Service Oriented Architectures is a must. (SOA) Proficiency with Azure and/or AWS cloud services and understanding of cloud archite

.Net Developer

Enexus Global

Fremont, California, USA

Contract

Job Title: Software Developer Applied AI and .Net Backend Location: Fremont, CA(5 Days onsite) Position: Contract Interview: Face To Face Job Description Serve as a member of the service software development team, designing, developing, and implementing innovative AI solutions leveraging large language models (LLMs) and Python to enhance our service and customer support environments. Contribute to backend API development using .NET to support scalable, robust applications. Translate ambiguo

AWS / Angular Software Applications Developer- TS/SCI with Polygraph

General Dynamics

McLean, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Software Development Job Qualifications: Skills: Git, GitHub, HTML5, Sass (Stylesheet Language) Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: Deliver simple solutions to complex problems as a Tools Developer/Application Develop

Software Engineer (Tool Developer)

Lockheed Martin Corporation

Mount Laurel Township, New Jersey, USA

Full-time

Job Description What We're Doing As a part of the Lockheed Martin community, we take on challenges and find solutions using creativity and collaboration. If you're looking to be a part of a passionate team solving these complex problems, then Rotary and Mission Systems is the place for you. The Work Lockheed Martin Rotary & Mission Systems is seeking a full-time Software Engineer (Tool Developer). In this role, you will perform requirements analysis, design, implementation, and test/verificati

Software Engineer (BACK-END)

Logisoft Technologies Inc

New York, New York, USA

Full-time

Job Title: Software Engineer (BACK-END) Location: New York, NY(On-Site) Employer Type: C2H (6 Months) The client prefers candidates with established local presence. Note: This opportunity is open to candidates with permanent resident OR U.S. work authorization. Required Skills: 6 8 years of experience in backend application development using JavaHands-on experience with Python for scripting or application developmentStrong knowledge of SQL/NoSQL (Oracle, MS SQL, MongoDB)Experience with messagi

Java Backend Developer

ProCorp Systems Inc.

New York, New York, USA

Third Party, Contract

Title: Java Backend Developer Location: NYC, NY Duration: 12 Months Rate: DOE Job Description: Skills required (essential): Hands-on with 7+ years experience in building distributed event-based systems applying agile practices. Sound understanding of microservice architecture and design patterns, system resiliency, scalability, security, and observability.Strong working knowledge of core Java, Spring-boot, and other Spring framework features.Experience with designing and implementing high volum

Backend Java Developer

Cognowiz

San Jose, California, USA

Contract

Title: Backend Java DeveloperDuration: 4-month contract + extensionsLocation: San Jose, CA Job Description:The client is looking for a Backend Java Developer to join one of the world's leading online payment platform companies based in San Jose, CA. Must-Haves:EE/CS or related majors. Bachelor and above.5+ years working in software engineer. Solid knowledge in Java and experience in design and implementation of REST-APIs, Spring Boot.Experience in micro-service and high concurrency service desig

Backend Engineer

Mitchell Martin, Inc.

Remote or Overland Park, Kansas, USA

Full-time, Contract

Title: Backend EngineerLocation: Midwestern Region (Onsite) Employment Type: Full TimeCompensation Pay Range:$105000-$150000/YrsDescription * Develop and enhance backend systems to support new and existing products. * Collaborate with various stakeholders to ensure successful product development. * Maintain high-quality code standards and testing procedures. * Communicate effectively with team members and other departments. * Contribute to the overall success of the product lifecycle.Key Respons

Full Stack Engineer

Zachary Piper Solutions, LLC

Cary, North Carolina, USA

Full-time

Piper Companies is seeking a Senior Full Stack Engineer to join a global financial powerhouse pioneering innovative banking solutions while shaping the future of sustainable finance for a full-time, hybrid position located in Cary, North Carolina (NC). The Senior Full Stack Engineer will architect and develop complex enterprise systems using Big Data technologies and modern programming frameworks while collaborating with cross-functional teams to deliver end-to-end solutions through the entire s

Backend Software Engineer

Vaco by Highspring

Pittsburgh, Pennsylvania, USA

Contract

THIS POSITION IS NOT AVAILABLE FOR C2C OR VISA SPONSORSHIP EVEN WITH THIS ROLE BEING PRIMARILY REMOTE YOU MUST STILL RESIDE IN THE PITTSBURGH AREA We currently have a contract-to-hire opportunity available for a Software Engineer focused primarily on Back-end services utilizing C# and SQL. You will also need to have familiarity with front-end technologies such as Angular. This position would be primarily remote with on-site requirements for team meetings about once or twice per month. Your co

Backend Engineer (GoLang Developer)

SES

Remote

Full-time

Systems Engineering Services is seeking a Backend engineer with a focus on Golang Development based out of the DMV area. Top 5 Technical Skills: Experience using the following Tech Stacks: Golang; Python; and NodeJS Understanding of cryptography, consensus algorithms, and other core concepts of blockchain technology Familiarity with Private Blockchain as well as Public platforms such as Ethereum, Hyperledger, and/or Corda Top 3 Soft Skills: Outstanding Communications Collaboration Proven abilit

Java Full Stack Developer

ProIT Inc.

McLean, Virginia, USA

Full-time

Java Full Stack Developer Proven experience as a Full Stack Developer or similar role, with proficiency in Java programming language. Strong understanding of frontend technologies such as HTML5, CSS3, JavaScript, and modern JavaScript frameworks. Experience with backend development using Spring Framework or similar frameworks. Hands-on experience with relational and non-relational databases. Familiarity with DevOps practices and tools such as Git, Jenkins, Docker, and Kubernetes. Excellent

Python Backend-Developer at Ottawa, Canada (Onsite)

Optimus Labs USA

Ottawa, Ontario, Canada

Third Party, Contract

Requirement details: Role: Python Backend-Developer Location: Ottawa, Canada (Onsite) Experience: 10+ Years Duration: Long Term Job Description: Working experience with Python and framework (e.g., Django, Flask)Proficiency in Linux operating systemExperience with DockerExpertise in SQL and database managementKnowledge of NoSQL databases, particularly CassandraWorking experience with message brokers, especially Apache KafkaUnderstanding of container orchestration with KubernetesVersion control wi

Software Engineer

Judge Group, Inc.

Charlotte, North Carolina, USA

Contract

Location: Charlotte, NC Salary: $53.00 USD Hourly - $57.00 USD Hourly Description: Job Title: Senior Java Engineer (Contingent Resource) Location: Charlotte, NC Employment Type: Contract / Contingent About the Role We are seeking a highly skilled Senior Java Engineer to join our team as a contingent resource. In this role, you will contribute to the design, development, and delivery of software engineering solutions, supporting moderately complex initiatives and collaborating with cross-fun