5,531 Backend Developer jobs in the United States

MANTECH seeks a motivated, career- and customer-oriented SME Backend Java Developer to join our innovative team in Ashburn, VA . This is a hybrid position with 2 days onsite and 3 days remote.

Each day U.S. Customs and Border Protection (CBP) oversees the massive flow of people, capital, and products that enter and depart the United States via air, land, sea, and cyberspace. The volume and complexity of both physical and virtual border crossings require the application of “big data” solutions to promote efficient trade and travel.

Responsibilities include but are not limited to:

• Lead and perform development and maintenance of end-user focused, object-oriented, data-driven analytic applications to support CBP threat analysis and targeting.

• Independently identify technical solutions for business problems, directly contribute to conceptual design, and routinely collaborate with Enterprise/Application architects, Database Architects, Data Scientists, and mission stakeholders.

• Develop new code, modify existing application code, conduct unit and system testing, and engage in rigorous documentation of developed and delivered application use cases, data flows, and functional operations.

• Demonstrate a strong practical understanding of industry standard Java Application Servers technologies such as WebLogic, WebSphere, TomcatEE and/or JBoss for application delivery and a strong understanding of application-relevant cargo and passenger data and databases used to support analytic application development, functionality, and targeting end user (officer) operation.

• Actively participate in formal and informal design reviews, solution sessions, and project milestone meetings as well as contribute to project document artifacts for presentation to both technical and non-technical audiences.

• Integrate with, and materially contribute to, project portfolio teams as a matrixed resource to provide development and issue resolution expertise in collaboration with data scientists, intelligence analysts, developers, and other participants at the direction of a project manager.

• Mentor junior developers and actively contribute to the development of a community of practice focused on enhancing technical skills, sharing best practices, and promoting enhanced mission domain knowledge.

Minimum Qualifications:

• HS Diploma/GED and 20+ years or AS/AA and 18+ years or BS/BA and 12+ years or MS/MA/MBA and 9+ years or PhD/Doctorate and 7+ years.

• Hands-on experience with Java 8+ and newer language features and expertise in Java and Object-Oriented Design and development principles (e.g. XML, JSON).

• Hands-on experience using Spring to develop Micro Services and/or REST API and with one or more ORM libraries such as Hibernate.

• Hands-on experience with one or more relational database systems (e.g., Oracle, MySQL, Postgres) and with SQL and developing complex SQLs involving multiple databases.

• Hands-on experience with web/application servers (e.g., Tomcat, WildFly, WebLogic) and with building and deploying containerized applications (e.g., Docker, Kubernetes, Openshift).

• Experience developing solutions via Amazon Web Services (e.g, AWS EC2, RDS, S3).

• Hands-on experience with one or more build tools (e.g., Maven, Gradle, Bamboo), with Software Source Code Management tools (e.g. BitBucket, Git), and leveraging distributed data/computing tools including Hadoop, Spark, Impala, MySQL, Elasticsearch, Solr, etc.

Preferred Qualifications:

• Developing applications with Spring Boot.

• Experience with NoSQL database systems such as Cassandra, MongoDB, DynamoDB, etc.

• Experience executing continuous integration with Jenkins or Bamboo.

• Familiarity with Unix/Linux and shell scripting.

• Hands on experience with Agile Lifecycle Management and engineering tools including Atlassian Jira and Confluence as well as application IDE tools including Eclipse, Jupyter Notebook, and Apache Zeppelin.

• Agile Scrum participation and, ideally, Scrum Master experience.

Clearance Requirements:

• Must be a U.S. citizen with the ability to obtain DHS CBP suitability prior to starting this position.

Physical Requirements:

• The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, which may involve delivering presentations.

ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at and provide your name and contact information.

Interview : Video

Visa : USC, GC

This is hybrid from day -1 ( Need only local candidates )

Description :

About the job

Our client, a large digital music, podcast, and video service, is looking to hire an Back End Developer to join their team.

Responsibilities

• This candidate will join our newly formed team inside Content Platform from August until November to help us proactively flag content that are violating certain safety policies in visual entities containing image and video.
• You should expect to work mostly with backend services (Java) and event streaming pipelines (Scala, Pubsub) to consolidate the detection for all entities with other proactive safety mechanisms that we currently support.
• Consolidate some detection flows so we can take advantage of our new capability to automatically remove content from our storage.
• By the end of this work we also expect to be able to deprecate 10% of our system inventory and make the maintenance of the current components more sustainable for one team. We will also be releasing a dashboard to track the quality and performance of this new proactive detection flow.
• You will also get the experience of working in a cross timezone team spread through multiple cities in the world (New York, London, Amsterdam and Milan) where we empower more async work and communication.

• 3+ years of experience as a Backend Engineer
• Java experience
• Scala experience
• Data streaming experience
• BigQuery is a plus, Google Cloud

• Lead the development and testing of the systems and services
• Contribute to the technical architecture and design of the product
• Translate product requirements into user stories and scalable technical solutions
• Deliver reliable, scalable services in a production environment
• Propose new ideas and contribute to innovation initiatives
• Collaborate with project leads, product managers, and fellow engineers as well as functional (business and back office) teams
• Participate in sprint planning, code review, development, backlog grooming
• Will have to follow data security, compliance best practices

• Bachelor's degree in Computer Science or a related field
• 3-4+ years of hands-on experience with Java or Kotlin and event-driven architecture
• 5-7+ years of programming experience, ideally with modern tech stacks
• Experience with Kubernetes and service-oriented architectures (100+ services in production)
• BE stack and database experience: Proficiency in Java/Kotlin/DynamoDB
• Cloud platform experience:
  -AWS
  -Temporal (nice to have)
• CI/CD pipelines experience: gitlab
• Background in building SOA or microservices-based applications
• Strong sense of ownership and accountability, with a track record of seeing projects through from start to finish
• Passion for solving complex problems and delivering impactful features
• Comfortable working in a collaborative environment with code reviews and shared design processes
• Will be translating business requirements to technical requirements? Will mostly be implementing stories
• Will follow specific design patterns, best practices or concept requirements? Yes
• Agile environment
• Testing experience required

• Analyze user needs and develop software solutions
• Work with project manager or product owner to meet specification needs
• Recommend software upgrades to optimize operational efficiency
• Collaborate with other developers to design and optimize code
• Create flowcharts and user guides for new and existing programs
• Document all programming tasks and procedures
• Perform routine software maintenance

• Previous experience in software development, computer engineering, or other related fields
• Knowledge of Java, Python, or other programming languages
• Familiarity with relational databases such as MySQL, Oracle, and SQL Server
• Deadline and detail-oriented
• Strong analytical and critical thinking skills

A forward-thinking company in the United States is currently seeking a skilled Backend Developer with expertise in Python, data integration, and AI systems. This role involves contributing to the development of cutting-edge, scalable back-end architecture for a prominent AI-driven recruitment platform.

About the Opportunity:

• Hybrid or Remote: Remote (U.S. Based Only)
• Shift: Standard business hours
• Schedule: Full-Time
• Setting: Cloud-native, collaborative environment

• Designing and developing robust backend services using Python
• Building, managing, and optimizing PostgreSQL and MSSQL databases
• Integrating with external APIs, backend systems, and OpenAI APIs
• Implementing ETL/ELT pipelines and managing both synchronous and asynchronous data flows
• Working with vector databases for AI-related indexing and retrieval
• Deploying and managing solutions in Azure, leveraging services like AKS, Service Bus, and more
• Developing in a Linux-based environment, automating workflows and deployments
• Collaborating with frontend, AI, and product teams to ensure smooth full-stack interactions
• Focusing on security, scalability, and performance across services and data layers
• Championing the use of AI development accelerators to increase efficiency

• 5-10 years of backend development experience, primarily with Python
• Deep experience with PostgreSQL and MSSQL in production environments
• Strong knowledge of API design, integration, and data processing pipelines
• Comfortable with both event-driven (async) and transactional (sync) architectures
• Solid understanding of security practices in cloud, container, and full-stack environments
• Exposure to OpenAI APIs, embeddings, or AI agent integrations
• Experience deploying in Azure, with hands-on use of AKS, APIM, Service Bus, DevOps, and Storage
• Background in Linux-based development and scripting
• Passion for adopting and learning AI-assisted development tools
• Experience with GitHub Copilot, or Cursor, OpenAI APIs

• Experience with DevSecOps or infrastructure as code in Azure
• Contributions to or interest in open-source Python tools
• Clear, proactive communication style and collaborative mindset

• You understand team dynamics, stakeholder needs, and business context
• You've worked with tech teams-and maybe even dabbled in SQL, JIRA, or light coding
• You know how to solve problems, manage timelines, and think analytically

• Java Full Stack Development -Core Java, Spring Boot, REST APIs, Microservices, Git, and AWS
• DevOps and Cloud Engineering -CI/CD, Docker, Jenkins, Kubernetes, Infrastructure-as-Code, and cloud platforms
• Data Science and AI -Python, machine learning, NLP, model deployment, and tools like TensorFlow and SageMaker
• Data Analytics and Engineering -SQL, Power BI, Tableau, Snowflake, Databricks, Python ETL, and more

• QA Analyst → Java Developer
• Business Analyst → Data Scientist at a FinTech startup
• Project Manager → DevOps Engineer at a cloud-native company

• Entry-Level Software Programmers (Java/Python)
• Java Full Stack Developers
• Data Analysts & BI Engineers
• Data Scientists & ML Engineers

• Recent grads in CS, Engineering, Math, or Statistics
• Professionals seeking a career switch to tech
• Candidates with career gaps or lacking real-world experience
• Individuals looking to boost their skill portfolio for better job prospects

About the job Backend Developer

Must Have:

• 3-5 years
• Build and maintain backend services and APIs using Go (Golang) .
• Perform unit testing for GoLang
• Working knowledge of at least two of the following monitoring tools: Elkstack, Promethius, or Dynatrace.
• Collaborate with senior developers and cross-functional teams to deliver project requirements.
• Experience with CI/CD pipelines, Git, and containerization (Docker).
• Understanding of APIs, RESTful services, and database interactions.
• Perform unit testing by using at least one of the following unit testing frameworks: Junit, Mockito, mocha, chai, or golang and using at least two of the following monitoring tools: Elkstack, Promethius, or Dynatrace.

• Utilize the technical stack of Golang, Kafka, MongoDB, Docker, GitLab and Harness.
• Utilize Mongo DB to store and access data, communicate to it from a Microservice, design and implement the data model, and optimize as needed or using Kafka to create topics to publish or consumers to ingest topics from.
• Familiarity with HL7, JSON/XML data formats.
• Familiarity with healthcare framework such as HL7 FHIR and X12 related standards.

Who We Are

EarthCam is the global leader in providing webcam content, technology and services. Founded in 1996, EarthCam provides live streaming video, time-lapse construction cameras, and Software-as-a-Service (SaaS) for AI-powered visual asset management. EarthCam leads the industry with the highest resolution imagery available, to empower building information modelling (BIM) and Virtual Design Construction (VDC) teams with actionable visual data. EarthCam's innovations include the world’s first outdoor gigapixel panorama camera system, and the first ever 5G construction camera. EarthCam has documented over a trillion dollars of construction projects around the world. The company is headquartered on a 10-acre campus in northern New Jersey.

We are seeking a highly skilled and dedicated Backend Developer to join our growing team.

Responsibilities

• Develop, record and maintain cutting-edge, web-based PHP applications on portal plus premium service platforms
• Build innovative, state-of-the-art applications and collaborate with the User Experience (UX) team
• Collaborate with cross-functional teams to identify and resolve technical issues, ensuring seamless and user-centered designs
• Contribute to the development and maintenance of the codebase, ensuring high-quality, maintainable code
• Prepare and maintain all applications utilizing standard development tools
• Utilize backend data services and contribute to increase existing data services API
• Lead the entire web application development life cycle right from concept to delivery and post launch support
• Convey effectively with all task progress, evaluations, suggestions, schedules along with technical and process issues
• Coordinate with co-developers and keep project manager well informed of the status of development effort
• Participate in code reviews, providing constructive feedback to ensure code quality and adherence to best practices
• Collaborate with stakeholders to understand business requirements and user needs, contributing to the enhancement of user experiences

Requirements

Who YOU Are

• Creative and efficient problem solver
• Technical
• Critical thinker
• Reliable
• Responsible
• Team player

Qualifications

• BS/MS degree in Computer Science, Engineering, MIS or related field
• Experience in PHP development, demonstrating your proficiency in designing and developing high quality software solutions
• Strong understanding of backend development
• Hands-on experience with SQL schema design, SOLID principles, REST API design 
• Software testing (PHPUnit, PHPSpec, Behat)
• MySQL profiling and query optimization
• In depth knowledge of object-oriented PHP and Laravel/Blade PHP Framework

Benefits

What We Offer:

The EarthCam package includes excellent salaries, bonuses, benefits, and constant opportunities for development – designed to create an entrepreneurial, invigorating and satisfying environment. Our benefits include:

• Base salary starting at $85K annually
• Health insurance (Single coverage 100% paid for by company)
• Dental and vision insurance
• 401K Plan (with aggressive company matching)
• Paid time off, plus paid holidays
• Regular free breakfasts, lunches and snacks
• In-house Yoga sessions
• Bicycles to ride around campus
• Team BBQs and annual company Olympics

EarthCam is committed to maintaining a transparent and secure recruitment process. EarthCam communicates with candidates exclusively using EarthCam email addresses and extends job offers solely by telephone. For more information about the EarthCam recruitment process and avoiding fraudulent job offers, please click here.

Job Description:

We are seeking a Backend Developer to join our team and contribute to building robust backend services for our platform. In this role, you will work with our Senior Backend Developers, Lead Architect, and other team members to implement reliable and efficient backend functionality that powers our applications.

Responsibilities

• Develop and maintain backend services and APIs according to specifications

• Implement features and functionality using Python and related frameworks

• Follow established coding standards and architectural patterns

• Write clean, maintainable, and well-tested code

• Create and maintain documentation for services and APIs you develop

• Implement security best practices in your code following established guidelines

• Build integrations with internal and external systems

• Follow established testing standards and implement tests for your code

• Collaborate with frontend developers to ensure smooth API integration

• Troubleshoot and resolve backend-related issues and bugs

Required Qualifications

• 4+ years of experience in backend development

• Proficiency in Python

• Understanding of RESTful API principles

• Familiarity with database concepts and SQL

• Experience with version control systems (Git)

• Basic understanding of web security principles

• Experience with cloud environments (AWS, Azure) at a basic level

• Good communication skills and ability to work in a team environment

• Willingness to learn and adapt to new technologies

• Bachelor's degree in computer science, Software Engineering, or related field (or equivalent practical experience)

Preferred Qualifications

• Experience with GraphQL

• Familiarity with JavaScript/TypeScript

• Experience with API documentation tools

• Basic understanding of containerization (Docker)

• Interest in AI technologies and workflows

• Experience with automated testing

• Knowledge of CI/CD concepts

• Familiarity with microservices concepts

• Experience building AI agents a plus

Compensation at DXC is influenced by an array of factors, including but not limited to the experience, job-related knowledge, skills, competencies, as well as contract-specific affordability and organizational requirements. A reasonable estimate of the current compensation range for this position is $105,100 - $195,200.

Full-time hires are eligible to participate in the DXC benefit program. DXC offers a comprehensive, flexible, and competitive benefits program which includes, but is not limited to, health, dental, and vision insurance coverage; employee wellness; life and disability insurance; a retirement savings plan, paid holidays, paid time off.

At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We're committed to fostering an inclusive environment where everyone can thrive.

If you are an applicant from the United States, Guam, or Puerto Rico

DXC Technology Company (DXC) is an Equal Opportunity employer. All qualified candidates will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, pregnancy, veteran status, genetic information, citizenship status, or any other basis prohibited by law. View postings below.

We participate in E-Verify. In addition to the posters already identified, DXC provides access to prospective employees for the Federal Minimum Wage Poster, Federal Polygraph Protection Act Poster as well as any state or locality specific applicant posters . To access the postings in the link below, select your state to view all applicable federal, state and locality postings. Postings are available in English, and in Spanish, where required. View postings below.

Postings link (

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Please note: DXC will respond only to requests for accommodations due to a disability.

Recruitment fraud is a scheme in which fictitious job opportunities are offered to job seekers typically through online services, such as false websites, or through unsolicited emails claiming to be from the company. These emails may request recipients to provide personal information or to make payments as part of their illegitimate recruiting process. DXC does not make offers of employment via social media networks and DXC never asks for any money or payments from applicants at any point in the recruitment process, nor ask a job seeker to purchase IT or other equipment on our behalf. More information on employment scams is available here .