72,614 Full Stack Sr Developer jobs in the United States

• Lead the full lifecycle development of web applications, from conceptualization and design to implementation, testing, deployment, and maintenance.
• Architect and develop robust and scalable backend systems using Python and relevant frameworks (e.g., Django, Flask).
• Design and implement intuitive and high-performance user interfaces using Angular and modern front-end technologies.
• Leverage AWS Bedrock to integrate and utilize various foundation models for tasks such as natural language processing, text generation, and more.
• Design, develop, and implement agentic systems, including planning, reasoning, tool usage, and memory management, to automate complex workflows and enhance application intelligence.
• Develop and maintain APIs (RESTful, GraphQL) to facilitate communication between front-end and back-end systems, as well as integration with external services.
• Design and manage data models and databases (both relational and NoSQL) to support application requirements.
• Write clean, well-documented, and testable code following best practices and coding standards.
• Collaborate effectively with product managers, designers, data scientists, and other engineers in an agile development environment.
• Participate in code reviews to ensure code quality and knowledge sharing.
• Troubleshoot and debug complex issues across the full stack.
• Stay up to date with the latest advancements in Angular, Python, cloud technologies (especially AWS), large language models, and agentic systems.
• Contribute to technical documentation and knowledge sharing within the team.

• Angular
• Python
• AWS cloud technologies
• Additional Skills:
• Knowledge of AWS Bedrock to integrate and utilize various foundation models.

The senior Java developer will work with a suite of applications in the Payment Policy Management platform to help build and deliver features as a part of the team using SAFe practices.

As a Sr Full Stack Developer at Amentum, you’ll be at the forefront of designing, developing, and deploying sophisticated enterprise applications in support of government IT missions. You’ll lead efforts across the full software development lifecycle while applying advanced technical knowledge and strategic insight to create systems that are efficient, secure, and scalable. Your day-to-day responsibilities will include:

• Lead architectural design and development efforts for enterprise-level applications using technologies including C#, Java, JavaScript, CSS, MVC, .NET, and SQL.

• Coordinate with cross-functional teams to gather, analyze, and define system requirements that align with customer missions and long-term goals.

• Design and implement scalable, maintainable solutions leveraging T-SQL, JavaScript frameworks, and scripting languages, while ensuring code structure follows best practices.

• Oversee development workflows in Team Foundation Server (TFS) and ensure proper source control, build, and release processes are followed.

• Perform system integration and prototype emerging technologies to support innovation and future-proof existing infrastructures.

• Write, review, and maintain comprehensive technical documentation, including architecture diagrams, data flow models, and test plans.

• Stay up-to-date on industry trends and emerging technologies, recommending tools and approaches that improve development processes and system performance.

• Troubleshoot complex technical issues quickly and effectively, applying strong problem-solving and decision-making skills.

• Mentor junior developers and engineers, providing code reviews, architectural guidance, and technical leadership.

• Coordinate and prioritize multiple ongoing projects and tasks to meet deadlines in a high-pressure, mission-driven environment.

• Collaborate with business analysts, developers, and senior leadership, ensuring solutions meet performance, security, and usability standards.

• Communicate effectively across technical and non-technical audiences to align project goals, timelines, and deliverables.

This role calls for someone who thrives under pressure, is technically exceptional, and can see both the big picture and the fine details. Your ability to multitask, stay organized, and lead through complexity will be critical to your success.

Requirements:

• Bachelor’s degree in Computer Science, Engineering, Information Technology, or a related field.

• 9+ years of experience in systems architecture, software development, or enterprise IT design. Which at least seven (7) years specialized experience

• Proven expertise in full software development lifecycle (SDLC), with hands-on experience in analysis, coding, testing, documentation, and system acceptance.

• Demonstrated knowledge of government IT systems, standards, and security frameworks.

• Proficiency in multiple programming languages and technologies, including:

• C#

• Java

• JavaScript

• CSS

• .NET Framework

• MVC architecture

• T-SQL / SQL

• JavaScript Frameworks (e.g., Angular, React, Vue)

• Strong understanding of system design, prototyping, and technology evaluation to support mission objectives and enterprise scalability.

• Experience conducting requirements gathering, functional analysis, and cost-benefit assessments for large-scale IT solutions.

• Ability to develop and maintain technical documentation, system diagrams, and architecture reports.

• Excellent communication and interpersonal skills, including the ability to interface with technical teams and non-technical stakeholders.

Clearance Required: TS SCI CI-Poly

Minimum Education: Bachelor’s Degree in Computer Science, Information Systems, Engineering, or Business

Minimum Years of Experience: Related discipline with nine (9) years of which at least seven (7) years specialized experience.

Required Certifications: N/A

Preferred:

• Prior experience supporting DOD or other federal government agencies.

• Familiarity with Team Foundation Server (TFS) and version control best practices.

• Knowledge of cloud platforms and services, such as AWS, Azure, or Google Cloud.

• Experience with Agile or DevSecOps methodologies in a systems development context.

• Certifications such as:

o TOGAF (The Open Group Architecture Framework)

o Microsoft Certified: Azure Solutions Architect Expert

o AWS Certified Solutions Architect - Associate/Professional

o Security+ Certification

• Ability to lead and mentor multidisciplinary technical teams.

• Strong organizational and decision-making skills, with the ability to handle multiple tasks under pressure and tight deadlines.

• Track record of identifying and implementing emerging technologies to improve business performance and operational efficiency.

Compensation

The annual starting salary for this position is between $150k-$160k annually. Factors which may affect starting pay within this range may include geography/market, skills, education, experience and other qualifications of the successful candidate.

Benefits

Amentum offers the following benefits for this position, subject to applicable eligibility requirements: medical dental and vision insurance, 401(k) retirement plan, life insurance, long-term and short term disability insurance, 17 days of paid time off, and parental leave.

#javelin

• Develops, builds, debugs, codes and tests web enabled interfaces to DSS' products
• Develops new features within existing products, develops new products, contributes to project work planning, performs product maintenance, produces enhancements and provides quick solutions to problems for the Product Line team(s)
• Mentors Junior software engineers and other team members ty sharing experience and knowledge
• Serves as development point of contact on one or more projects.

• Adheres strictly to documentation requirements and deadlines
• Provides feedback to assigned development team(s) on a regular basis
• Contributes to project plans, performs product maintenance, produces product enhancements, and provides quick and effective solutions to problems which cannot be resolved by the product line team
• Is responsible for written and verbal communication with other team members, documentation of version notes, technical manuals, work activities and other work processes.
• Travels on an occasional basis up to 25% as directed by management and client need.

• Individuals working for DSS will be subject to security and privacy requirements as explained in HIPAA, FedRAMP, and NIST 800-53. Additionally, they are required to undergo specific FedRAMP training to ensure compliance with all associated controls and responsibilities in the day-to-day performance of their duties. Individuals working in departments that are considered to be in the high risk category will be required to undergo advanced training based on their role and level of access. Individuals with access to modify data and the configuration baseline will require further training.

• 6+ years software development experience
• 3+ years web application development experience
• Works independently and has acted as a mento to Interns, Junio SW Engineers and SW Engineers.
• Detail-oriented approach to work. Translates business requirements into technical designs.
• Produced software in a structured maturity model environment and has demonstrated and verifiable software development skills, such as:
• HTML5
• JavaScript
• CSS
• XML
• AJAX
• AngularJS
• jQuery
• Java
• C#
• .NET (DotNet)
• Delphi
• SQL Server

• Identifies, prioritizes, and executes tasks to meet critical project deadlines.
• Works effectively (maintaining accuracy and sensitivity) under tight timelines and schedules.
• Senses the importance or impact of issues and situations and takes appropriate actions.
• Possesses excellent listening skills and a commitment to communicating (verbally and in writing) in a clear, concise and timely manner at all times.
• Organizes time effectively while identifying barriers to progress, proposing solutions and setting priorities.
• Any experience designing and developing EHR software

• Bachelor's degree in a related field of study
• Equivalent combinations of work experience andor education can be substituted

• Master's Degree in a related field of study

• MCSD, Advanced Certification in Web and Mobile Application Development, or other targeted certifications.

Job Title

Application/Product Engineer (AI/ML)

Job Description

Fujitsu's Technology Strategy Unit (TSU) is responsible for the corporate technology strategy for the entire Fujitsu - the world leading Information technology solution company. We are looking for an AL/ML engineer with solid hands-on technical experience as well as a strategic, business-oriented mind. This role will be crucial to the development and implementation of cutting-edge AI/ML products. Its responsibilities will include designing and constructing sophisticated AI/ML models, in addition to improving and updating existing systems. The candidate should be passionate about building products to meet customers' requirements.

Responsibilities

• Develop machine learning applications in alignment with project requirements and business goals

• Integrate various technology components into viable products

• Develop requirements and design implementation strategy based on customers' needs

• Research and implement machine learning algorithms and tools

• Develop technical strategy based on market trends and competitive landscape

• Presentation and tech demo to customers and executives

• Work with researchers and product management team to commercialize technology components

• Perform machine learning tests and statistical analysis in order to fine-tune the machine learning systems

Qualifications

• PhD degree preferred, MS will be considered

• 2+ years of experience applying AI/ML to practical uses

• Coding in Python, PyTorch, C++, Javascript

• Full-Stack Development experience preferred

• Strong analytical, presentation and communication skills

• Problem solver, fast learner, team player and highly motivated

• Previous experience of working with international teams and product management team preferred

#LI-KC1

Requisition ID : 30189