Senior Full Stack Engineer

Company: Citian
Location: Washington
Posted on: February 20, 2026

Job Description:

Job Description Job Description Citian is a fast growing, venture backed SaaS technology company based in Washington, DC. Our software solutions revolutionize how our transportation and infrastructure systems – roads, rail, transit, bicycle, pedestrian – operate. Our tech solutions: Reduce traffic fatalities Enhance pedestrian accessibility Empower system operators to save time & money You'll work with some of the brightest minds in the software and transportation industries. Our engineers and data scientists apply the latest in emerging tech, Artificial Intelligence, and Machine Learning to build smarter, more advanced tools for our diverse client base. We work with clients across the United States, with global ambitions in the years ahead. Who You Are: As a Senior Full Stack Engineer at Citian, you'll be expanding current projects and innovating new solutions within transportation. You will have at least 5 years of experience developing and deploying full stack applications. You are willing to work alongside other developers to build Citian's software lineup and complete contracted software solutions. We're looking for a quick learner who is adaptable and has a strong desire to progress through the company. As a self-starter, you are not afraid to take ownership of projects and can handle the challenges that come with a rapidly evolving startup. You are resourceful, innovative, and continuously seek opportunities to improve processes and drive efficiency. Your strong communication and collaboration skills enable you to work effectively with cross-functional teams and stakeholders. If you are passionate about software engineering and are eager to contribute to the success of a startup, we would love to hear from you. Expected Duties: Develop full stack applications, including both front-end and back-end components, web applications, and mobile applications Collaborate with other developers through GitLab Communicate deadlines and needs with other teammates Research new solutions to transportation engineering problems Innovate and brainstorm approaches to solutions through group sessions Implement modern solutions and deploy production builds Meet tight deadlines Required Skills & Experience: Bachelor's in Computer Science or related field 5 years of software development experience ideally within a startup environment Portfolio of projects that demonstrate full stack development (web, application, or game development) Experienced in modern web development tools such as Typescript, React, Next.js, NodeJS, Express Strong understanding of Computer Science topics such as optimization and algorithms Familiar with the design cycle and the concept of horizontal and vertical sliceas Understanding of Python/SQL code and ability to retrieve and store data safely through a back-end Demonstrate a deep understanding of creating and maintaining RESTful APIs, with proficiency in tools such as Postman for testing and debugging these interfaces. Experience with cloud services, specifically AWS, and the ability to leverage its features for scalable back-end solutions is highly desired. (S3, Lambda Function Your Citian Advantage: Competitive salary and benefits package including medical, dental, and vision insurance and generous PTO. 401(k) company match and monthly commuter transportation benefit On-site gym and free snacks in the office High-growth potential and opportunities for advancement within a fast growing, venture-backed SaaS startup! Let's build smarter cities together! Learn more about Citian here: www.citian.co Citian is an organization committed to diversity and inclusion to drive our business results and create a better future every day for our diverse employees, clients, partners, and communities. We believe a diverse workforce allows us to match our growth ambitions and drive inclusion across the business. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, age, national origin, or protected veteran status and will not be discriminated against on the basis of disability. Equal Opportunity/Affirmative Action Employer Minorities/Females/Protected Veterans/Persons with Disabilities

Keywords: Citian, Arlington , Senior Full Stack Engineer, IT / Software / Systems , Washington, Virginia