> Markdown version of [/jobs/ext/1572836-senior-software-engineer](https://www.wearedevelopers.com/jobs/ext/1572836-senior-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - **Company:** Leidos, Inc. - **Location:** Baltimore, MD, United States - **Experience:** Expert - **Salary:** $131,300.0 - $237,350.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Geographic Information Systems, Application Programming Interfaces (APIs), Applications Architecture, ArcGIS (Software), Automation of Tests, Big Data, Cloud Computing, Code Review, Computer Programming, Databases, Continuous Integration, D3.Js, Information Engineering, Data Governance, Data Visualization, Relational Databases, Database Schema, Decision Support Systems, JQuery, Python (Programming Language), PostgreSQL, Node.Js, PostGIS, Software Architecture, Standard Sql, Software Construction, Software Engineering, Visual Analytics, Web Applications, Web Application Frameworks, Tailwind, ReactJS, Software Security, Software Application Programming, Backend, Vue.js, Playwright, Build Process, Graphql, Data Delivery, JestJS, Restful APIs, Code Restructuring, Software Version Control, Data Pipelines, Legacy Systems - **Published:** July 14, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9027102/senior-software-engineer ## About the Role * Bachelor's degree and 12+ years experience. * Strong experience developing full stack web applications using modern JavaScript frameworks (Vue.js, React, or similar). * Experience developing interactive visualizations using D3.js or comparable visualization libraries. * Strong programming experience with Python and JavaScript. * Experience building RESTful APIs and backend services. * Experience with relational databases such as PostgreSQL and spatial technologies including PostGIS. * Experience designing and maintaining geospatial data processing workflows. * Knowledge of software development lifecycle practices including version control, testing, and code review. * Experience developing applications supporting large, complex datasets. * Excellent analytical, problem-solving, and communication skills. * Must be able to obtain and maintain a public trust clearance. * Experience with Vue.js, Vuex, XState, Tailwind CSS, Vuetify, GraphQL, Node.js, and jQuery. * Experience with automated testing frameworks such as Playwright, Vitest, or similar. * Familiarity with enterprise data governance, statistical data products, or federal data standards. * Experience supporting secure software development and application authorization processes. * Experience working with economic, demographic, or public-sector data products. * Ability to work effectively with cross-functional teams, technical stakeholders, and business partners. * JavaScript, Python, SQL * Vue.js, Vuex, D3.js, Tailwind CSS, Vuetify, jQuery * Node.js, GraphQL * PostgreSQL, PostGIS * Vitest, Playwright, pgTap * ArcGIS, Geospatial Data Processing * AsciiDoc * REST APIs, Data Visualization, Data Pipelines, Software Architecture, CI/CD, Code Reviews ## Description We are seeking a highly skilled to design, develop, and maintain modern web applications. The ideal candidate combines expertise in full stack development, data visualization, and cloud-ready application architecture to deliver scalable solutions supporting data-driven decision making. This position is onsite in Woodlawn, MD * Design, develop, and maintain full stack web applications that enable users to explore and analyze complex statistical datasets. * Build responsive, interactive data visualization tools using modern JavaScript frameworks and visualization libraries. * Develop intuitive user interfaces that improve access to large public datasets through dynamic filtering, querying, and exploration capabilities. * Design and optimize APIs and backend services supporting high-performance data delivery. * Develop, maintain, and optimize large-scale data processing pipelines and automated workflows. * Create and manage databases and data models supporting enterprise analytics and visualization platforms. * Refactor legacy applications and workflows into scalable, maintainable, server-based architectures. * Collaborate with product owners, subject matter experts, data providers, and stakeholders to translate business requirements into technical solutions. * Apply software engineering best practices including automated testing, code reviews, version control, documentation, and CI/CD processes. * Support application security reviews, deployment activities, and ongoing system maintenance. * Maintain technical documentation, data schemas, and build processes while ensuring backward compatibility across production systems. * Troubleshoot application, database, and infrastructure issues across development and production environments. * Contribute across multiple technical disciplines including software engineering, data engineering, systems administration, and technical consulting. ## Related Videos - [Web development best practices in 2021](https://www.wearedevelopers.com/videos/280-web-development-best-practices-in-2021) - [Web-based Information Visualization](https://www.wearedevelopers.com/videos/84-web-based-information-visualization) - [WeAreDevelopers LIVE - the weekly developer show with Chris Heilmann and Daniel Cranney](https://www.wearedevelopers.com/videos/1309-wearedevelopers-live-the-weekly-developer-show-with-chris-heilmann-and-daniel-cranney) - [Meta Harnesses: What the JS Framework Wars Teach Us About What Is Next for AI Agents](https://www.wearedevelopers.com/videos/100353-meta-harnesses-what-the-js-framework-wars-teach-us-about-what-is-next-for-ai-agents) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [WeAreDevelopers LIVE – From JavaScript to WebAssembly, High-Performance Charting and More](https://www.wearedevelopers.com/videos/1794-wearedevelopers-live-from-javascript-to-webassembly-high-performance-charting-and-more) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk)