> Markdown version of [/jobs/ext/959567-mid-level-full-stack-engineer-259k-yr-ts-sci-fs-poly](https://www.wearedevelopers.com/jobs/ext/959567-mid-level-full-stack-engineer-259k-yr-ts-sci-fs-poly). 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). --- # Mid-Level Full-Stack Engineer [$259k/yr+] TS/SCI-FS Poly - **Company:** SYSTOLIC, INC. - **Location:** Annapolis Junction, MD, United States - **Experience:** Experienced - **Salary:** $259,000.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Algorithm Design, Big Data, Cascading Style Sheets (CSS), Databases, Database Queries, Software Debugging, Node.Js, Software Engineering, Software Systems, ReactJS, Git, Vue.js, Bug Reporting, Npm(Software) - **Published:** June 30, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9002616/mid-level-full-stack-engineer-259kyr-tssci-fs-poly ## About the Role * Degree: Technical bachelor's degree or equivalent experience * Years of experience: 7+ years * Total Compensation: $259k+ yearly ## Description * Develop and maintain complex software systems, including algorithm development and large data set manipulation. * Analyze requirements, design and code new features, integrate software, and perform testing. * Implement database queries and interfaces. * Lead software development processes. * Requires expertise in Javascript, React.js, Node.js, Vue.js, HTML/CSS, NPM, and Git., * Develop, maintain, and enhance complex and diverse software systems based on documented requirements. * Analyze user requirements to derive software design and performance requirements. * Design, code, and modify new or existing software to add features and improve performance. * Integrate existing software into new or modified systems or operating environments. * Develop software solutions by analyzing system performance standards and investigating problem areas. * Design, develop, and modify software systems using scientific analysis and mathematical models. * Review and test software components, debug existing software, and resolve problem reports. * Provide input to system design, including hardware/software trade-offs and requirements analysis. * Develop or implement algorithms and complex database interfaces/queries. * Utilize expertise in Javascript, React.js, Node.js, Vue.js, HTML/CSS, NPM, and Git. * Lead software development processes and assist with developing and executing test procedures. * Provide recommendations for improving documentation and software development process standards. ## Related Videos - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [Lessons learned from building a thriving Vue.js SaaS application](https://www.wearedevelopers.com/videos/1666-lessons-learned-from-building-a-thriving-vue-js-saas-application) - [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) - [Web development best practices in 2021](https://www.wearedevelopers.com/videos/280-web-development-best-practices-in-2021) ## Related Articles - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Fullstack developer salary in Germany [2023]](https://www.wearedevelopers.com/magazine/197-fullstack-developer-salary-in-germany-2023) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london)