Senior Full-Stack Developer at Aristotle | Washington, DC

Derex Technologies Inc. seeks a Senior iOS Developer based in Washington. This role centers on building and enhancing iOS applications to provide users with a seamless and dependable experience. Key responsibilities Design, develop, and maintain iOS applications Collaborate with cross-functional teams to deliver quality software Contribute ideas and solutions to improve mobile products Ensure applications meet established performance and usability standards What we value Solid experience in iOS development Ability to work effectively with colleagues from different disciplines Commitment to delivering strong user experiences Interest in shaping the future direction of mobile products This position is located in Washington.

MetroStar Systems is seeking a Senior iOS Engineer based in Washington, DC. This position centers on designing, building, and maintaining mobile applications that support the company’s digital initiatives. Role overview The Senior iOS Engineer will take ownership of developing mobile apps from concept through delivery. The work involves close collaboration with colleagues across different disciplines to ensure software meets project goals and client expectations. Key responsibilities Design and implement new features for iOS applications Maintain and improve existing mobile products Work with cross-functional teams to deliver reliable, high-quality solutions

Join Our Team as a Software Developer!At Akumen, Inc., we are dedicated to delivering technology, data, and cybersecurity solutions that empower federal clients to modernize their operations, enhance decision-making, and achieve impactful results. Our mission is to provide innovative, secure, and scalable services that align with our clients' mission priorities.Role Overview:We are looking for a talented Software Developer to join our team and contribute to application design, development, integration, and maintenance for federal programs. In this role, you will create secure and scalable applications that facilitate data access, business logic, analytics, and visualization. You will collaborate closely with architects, engineers, and stakeholders to convert requirements into practical and efficient technical solutions.Key Responsibilities:Design, develop, test, and maintain software applications and components.Establish integrations between front-end interfaces, back-end services, APIs, and data platforms.Diagnose and resolve defects, implement enhancements, and support software upgrades and releases.Work with stakeholders to transform functional requirements into technical designs and code.Maintain comprehensive technical documentation and support Agile development and delivery processes.

Role overview Derex Technologies Inc. seeks a Senior Project Manager to guide technology projects from start to finish. This position is based in Washington and plays a central role in delivering projects on time and according to client expectations. What you will do Manage every stage of technology project life cycles, from initiation through completion Work closely with teams across different functions to achieve project milestones Keep projects focused on client objectives and specific requirements Track progress, identify issues early, and resolve challenges to maintain delivery timelines Impact This role directly influences the success of major projects and helps teams deliver high-quality results that meet client needs and expectations.

Derex Technologies Inc. is looking for a ServiceNow Architect based in Washington. This position focuses on designing, implementing, and refining ServiceNow workflows to fit client requirements. Role overview The ServiceNow Architect works closely with cross-functional teams to create solutions that integrate smoothly with clients’ existing systems. The role requires hands-on involvement in every stage, from initial design through deployment and optimization. Key responsibilities Design ServiceNow workflows tailored to client needs Implement and optimize ServiceNow solutions Collaborate with teams across disciplines to ensure effective integration Contribute to improvements that help clients operate more efficiently

Join our dynamic team at usm2 as a Senior Java Developer! We are looking for talented individuals who are passionate about technology and eager to contribute to exciting projects. In this role, you will be responsible for developing high-quality Java applications, collaborating with cross-functional teams, and driving innovative solutions. If you are an experienced Java developer located in or near Washington, we want to hear from you!

We are seeking a talented and motivated iOS Developer to join our dynamic team at usm2. In this role, you will work on exciting projects that push the boundaries of mobile technology. If you are passionate about developing high-quality iOS applications and are eager to make a significant impact, we want to hear from you!

Join Significance Inc as a Senior Financial Budget Analyst, where you'll play a crucial role in managing financial planning, analysis, and budgeting activities. Your expertise will guide decision-making and strategic initiatives by providing detailed insights into financial performance.As a vital member of our finance team, you will collaborate closely with various departments to ensure financial alignment with organizational goals. Your contributions will directly impact our ability to achieve long-term success.

We are actively seeking a talented Senior Java Developer or Lead Java Developer to join our dynamic team at usm2. This is an exciting opportunity for individuals with a strong background in Java development to contribute to innovative projects in a fast-paced environment.As a Senior Java Developer, you will be responsible for designing, developing, and maintaining high-quality software applications. You will collaborate with cross-functional teams to deliver robust solutions that meet our clients' needs.

Join our dynamic team at Systems Definition Inc. as a Software Developer specializing in Java! We are looking for a driven individual with proven expertise in modern web application development, particularly using microservices and cloud technologies.This role involves developing, integrating, and testing web applications that support vital Department of Defense (DoD) mission planning and National Security initiatives. The ideal candidate will have the ability to analyze and transform existing codebases into more modular, cloud-optimized architectures. Additionally, you will be tasked with integrating both commercial and open-source tools to automate processes that enhance our quality assurance capabilities.Your familiarity with DevOps practices and CI/CD methodologies will be essential in this fast-paced Agile environment, where you will contribute to cutting-edge algorithms and technologies for our esteemed DoD clientele located in Washington, DC. Collaboration is key; you will participate in team meetings and work closely with engineering, documentation, and fellow developers to devise innovative solutions.

Join usm2, a leading technology solutions provider, as we seek Senior Java Developers to tackle exciting projects in a fast-paced environment. This is a fantastic opportunity for seasoned developers looking to make a significant impact.

Role Overview: Join our dynamic team as a Senior Application Developer specializing in Angular, where you will be instrumental in developing and enhancing software applications for our customer's enterprise applications portfolio. Your expertise in the angular.io framework will be pivotal in supporting operations and maintenance activities. The ideal environment consists of systems built on angular.io, Java, and Oracle platforms. In this collaborative role, you will engage with fellow developers, stakeholders, and end-users to design, implement, and troubleshoot UI components effectively.Key Responsibilities: Develop and maintain software applications, troubleshoot issues, and apply your knowledge of the software development lifecycle and Agile methodologies.

About Our TeamJoin the innovative Monetization team at OpenAI, a newly formed, dynamic cross-functional group dedicated to collaborating across engineering, product, research, and design. We are committed to developing foundational systems that responsibly scale access to intelligence. Our mission focuses on creating user-centric, privacy-conscious monetization products, including cutting-edge advertising experiences that foster user trust, create economic opportunities, and support OpenAI's ongoing innovation.Monetization is vital for enabling OpenAI to continuously explore the frontiers of AI capabilities, ensuring that the advantages of AGI are shared widely. We are convinced that monetization strategies should align with user value, adhere to strict privacy and safety standards, and nurture a thriving ecosystem of developers and businesses.This team thrives in a greenfield environment, moving rapidly through prototyping, experimentation, and iterative deployment. We work closely with our partners in Product, Design, and Research to translate research breakthroughs into scalable real-world systems.About the RoleWe are seeking a Senior iOS Engineer to spearhead the development of core mobile monetization experiences and iOS foundations that facilitate user interactions such as account management, payment for services, and access to family features across OpenAI's mobile applications.This role presents a unique 0→1, greenfield opportunity where you'll define the architecture, components, and reusable frameworks essential for product teams to deliver quickly while adhering to high standards of security, reliability, privacy, and user trust. You will collaborate extensively with backend engineers, product managers, designers, safety experts, and researchers to convert evolving requirements into high-quality iOS systems and experiences.Key ResponsibilitiesDevelop and deploy new monetization experiences on iOS, including purchase flows, subscription management, and monetization-adjacent surfaces that showcase AI's capabilities.Design and maintain shared iOS frameworks and components for account, trust, and commerce flows utilized across OpenAI's mobile applications (e.g., identity management, entitlements, payments, policy-aware user experience).Oversee complex client-side systems encompassing UI, networking, local state management, observability, and integrations with Apple platforms (StoreKit, Sign in with Apple, device security features, etc.).Enhance performance, reliability, and responsiveness for global users, implementing robust offline and poor-network handling and safe rollout strategies.Develop and refine testing frameworks (unit, integration, snapshot) to ensure high-quality deliverables.

Overview At Akumen Inc., we are on the lookout for a talented and seasoned Senior ServiceNow Developer who possesses 5 to 8+ years of practical experience in architecting, developing, and managing enterprise-level ServiceNow applications. In this pivotal role, you will spearhead the design and execution of sophisticated solutions that resonate with our business goals and technical demands. You will assume responsibility for significant projects, mentor junior developers, and work in collaboration with cross-functional teams to deliver robust, secure, and innovative ServiceNow applications. The ideal candidate will have extensive proficiency in ServiceNow development, scripting, integrations, and architecture, backed by a profound understanding of ServiceNow best practices and governance. You will showcase exceptional leadership and communication skills, engaging effectively with both technical and non-technical stakeholders, consistently delivering solutions that meet or surpass client expectations. This role necessitates a proactive problem-solver who thrives in a dynamic environment and is dedicated to fostering continuous improvement and innovation in mission-critical IT systems. Required: All applicants must reside in DC/MD/VA. This position is NOT remote – work will be conducted 100% in downtown Washington, DC.

Join Our Team as a Senior iOS Software Development Engineer in Test!We are seeking a talented and motivated Senior iOS SDET to join our dynamic team in Seattle. This role requires an in-person interview, so local candidates are preferred.Key Responsibilities:Design and implement mobile UI automation for iOS applications using XCUITest and Swift.Create API test automation and develop tools utilizing Java and Groovy.Qualifications:Proficient in an object-oriented programming language such as C++, Java, Swift, etc.Familiarity with Swift programming or a strong willingness to learn.Meticulous attention to detail in programming, test design, and execution.Experience with version control systems like Git.Strong analytical and problem-solving skills.Excellent organizational and planning capabilities.Willingness to adapt and learn new programming languages and technologies as needed.

Alpha Insight Inc seeks an Event Specialist to join the team in Washington. This position centers on planning, organizing, and delivering events that reflect the company’s brand and engage the intended audience. Collaboration with the marketing team is a key part of the role, ensuring each event supports business objectives. Responsibilities Plan and coordinate a variety of events from initial concept through completion Manage logistics, schedules, and resources to keep each event on track Partner with the marketing team to align events with company goals Contribute to creating experiences that build brand recognition and connect with attendees Location This role is based in Washington.

Join True Zero Technologies, a proud veteran-owned small business dedicated to the meaningful integration of people and technology. We believe that the success of any organization is deeply rooted in the strengths and capabilities of its workforce. Our team comprises passionate and innovative individuals who share a common vision of delivering exceptional services to our clients. Our commitment to fostering a positive work culture has earned us numerous accolades, including recognition as one of the Best Places to Work in 2023 across two categories: “Prosperous and Thriving” and “Mid-Atlantic Region”. We were also honored on the Inc. 5000 list of America’s fastest-growing companies in 2022, 2023, and 2025. This recognition reflects our sustained growth driven by our unwavering dedication to excellence and a people-first approach.

ServiceNow DeveloperEmployment Type: Full-Time, Mid-levelDepartment: Information TechnologyCGS Federal is on the lookout for a talented ServiceNow Developer to enhance our dynamic technical support initiatives for a significant Federal agency. Join a team committed to addressing the government's most pressing challenges through innovative technology solutions.At CGS Federal, we pride ourselves on assembling a diverse group of motivated and skilled professionals who thrive in a collaborative environment. We value innovation and provide numerous learning opportunities for our employees to foster their professional growth and career trajectory.Key Responsibilities:- Employ technologies such as Angular.JS, JavaScript, SQL, and related frameworks for ServiceNow development.- Assist in the discovery phase, requirements gathering, and the development of core ServiceNow functionalities.- Execute multiple HR Service Requests within the HRSD scope in ServiceNow.- Create applications to streamline Employee service requests to HR and support the HR fulfillment process.- Refactor ServiceNow customizations during major updates to the platform.- Collaborate with fellow developers and business analysts within an Agile framework.- Grasp backend configurations of ServiceNow, design tests, and generate test data.- Aid in configuration, change, and release management processes.- Ensure the timely completion and precision of deliverables.Qualifications:- Bachelor’s degree in a relevant field.- 3-7 years of related experience.- Minimum of 2 years of direct ServiceNow development experience.- ServiceNow Certified System Administrator (CSA) certification required.- Proven experience in creating reports, dashboards, customized forms, and workflows within ServiceNow.- Familiarity with Agile Development and Test Management applications in ServiceNow.

Security Clearance Requirement Active DOD/DSS SECRET security clearance or higher is required for this role. Interim clearance is acceptable. Location Requirement This position is onsite in downtown Washington, DC. Candidates must live in DC, Maryland, or Virginia. Remote work is not available. Role Overview Akumen Inc. seeks a Senior Full Stack Java Developer to join the software development team. This role covers all phases of the software development lifecycle, with emphasis on architecture, design, quality, and implementation. A major focus is upgrading, managing, and maintaining cloud-based applications. Success in this position requires strong experience with Java, Angular, C#, and related technologies. The ideal candidate is analytical, self-motivated, and communicates well while handling both front-end and back-end projects. Key Responsibilities Design, configure, and implement application environments. Develop release management procedures and provide production support. Write and refine software code, conduct unit testing, and perform peer reviews to maintain coding standards and quality. Work with team members on software design, deliver accurate work estimates, and implement new features, including user interfaces and data transformation components. Lead upgrades for complex Angular (v9), C#, and Java (v11) applications to current stable releases, focusing on compatibility, performance, and security. Coordinate with development, infrastructure, and operations teams. Ensure all development activities comply with security policies and practices. Independently address security vulnerabilities found in code scans. Collaborate with Business Analysts, Product Managers, and stakeholders to understand and implement business requirements. Communicate updates to program, project, and team leads about risks or needed adjustments to project plans. Keep current with emerging technologies and best practices. Debug and develop across Java, Spring Boot, Angular, and .NET technologies.