Senior Full Stack Engineer Jobs in McLean, VA
Senior Full Stack Engineer jobs in McLean, Virginia are concentrated in the Tysons Corner corridor, the Beltway business parks along Route 7, and the defense and intelligence campuses clustered near the Dulles Toll Road, with demand driven by federal contracting, cybersecurity, and financial services. Employers hiring right now include Capital One, Information Technology Senior Management Forum, and Booz Allen Hamilton. Find a role that fits below and apply directly.
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Showing 5 of 226+ Senior Full Stack Engineer jobs
Job Summary
We are seeking a Senior Full Stack Developer – Python with strong experience in Python, PySpark, AWS, and Data Engineering to develop and modernize data-centric applications supporting enterprise and regulatory reporting initiatives. The ideal candidate will have hands-on experience building scalable data solutions, developing batch and real-time pipelines, supporting legacy applications, and modernizing applications within cloud environments. This role requires strong technical problem-solving skills, production support experience, and the ability to collaborate with cross-functional Agile teams.
Key Responsibilities
- Design and develop scalable data solutions using Python, PySpark, Spark, and AWS.
- Build, enhance, and support batch and real-time data pipelines.
- Develop and maintain cloud-based data processing solutions using AWS S3, Glue, EMR, Data Lake, and Delta Lake.
- Modernize legacy applications while maintaining and supporting existing systems.
- Troubleshoot production issues, defects, performance problems, and application enhancements.
- Analyze existing processes and identify opportunities for automation, optimization, and innovation.
- Collaborate closely with Product Owners, Scrum Masters, business stakeholders, and technical teams.
- Evaluate emerging technologies and develop Proofs of Concept (POCs) to support modernization initiatives.
- Participate in Agile ceremonies, technical discussions, code reviews, and SDLC activities.
- Lead and mentor junior developers while providing technical guidance and best practices.
- Work within CI/CD and Agile development environments.
- Support application deployments, production releases, and ongoing system enhancements.
Required Qualifications
- 5+ years of professional software development experience.
- 5+ years of hands-on Python development experience.
- 5+ years of hands-on PySpark / Spark experience.
- 5+ years of Data Engineering experience.
- Strong hands-on experience with AWS, including:
- Amazon S3
- AWS Glue
- Amazon EMR
- AWS Data Lake
- Delta Lake
- Experience working with legacy applications and modernization initiatives.
- 3+ years of SQL experience, including complex queries.
- 3+ years of Unix/Linux experience.
- Strong understanding of SDLC, Agile methodologies, and software development practices.
- Experience providing technical leadership and mentoring junior developers.
- Strong troubleshooting, analytical, and problem-solving skills.
- Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent professional experience.
Preferred Qualifications
- Experience within financial services or mortgage-related environments.
- Experience supporting regulatory reporting applications or data solutions.
- Experience with the Hadoop/Spark ecosystem.
- Experience developing real-time data processing solutions.
- Experience with CI/CD, cloud modernization, and DevOps practices.
- Strong production support and incident troubleshooting experience.
- Experience developing automation solutions and technical POCs.
- Experience working with large-scale enterprise data platforms.
Technical Skills
Primary: Python, PySpark, Apache Spark, Data Engineering, SQL
AWS: S3, Glue, EMR, Data Lake
Data Technologies: Delta Lake, Hadoop, Spark ecosystem, Batch Processing, Real-Time Data Processing
Systems: Unix, Linux, Legacy Application Modernization
Development Practices: SDLC, Agile, CI/CD, Production Support, Automation, POCs
Work Environment
- 100% onsite in McLean, VA
- Candidates must be local to the DMV region.
- Immediate availability preferred.
Why Join Accelyst?
At Accelyst, you will work on modern data and cloud engineering initiatives involving AI, automation, cloud technologies, and enterprise-scale solutions. Our collaborative and agile environment provides opportunities to work with modern technologies while solving complex business and technical challenges.
Job Summary
We are seeking a Senior Full Stack Developer – Python with strong experience in Python, PySpark, AWS, and Data Engineering to develop and modernize data-centric applications supporting enterprise and regulatory reporting initiatives. The ideal candidate will have hands-on experience building scalable data solutions, developing batch and real-time pipelines, supporting legacy applications, and modernizing applications within cloud environments. This role requires strong technical problem-solving skills, production support experience, and the ability to collaborate with cross-functional Agile teams.
Key Responsibilities
- Design and develop scalable data solutions using Python, PySpark, Spark, and AWS.
- Build, enhance, and support batch and real-time data pipelines.
- Develop and maintain cloud-based data processing solutions using AWS S3, Glue, EMR, Data Lake, and Delta Lake.
- Modernize legacy applications while maintaining and supporting existing systems.
- Troubleshoot production issues, defects, performance problems, and application enhancements.
- Analyze existing processes and identify opportunities for automation, optimization, and innovation.
- Collaborate closely with Product Owners, Scrum Masters, business stakeholders, and technical teams.
- Evaluate emerging technologies and develop Proofs of Concept (POCs) to support modernization initiatives.
- Participate in Agile ceremonies, technical discussions, code reviews, and SDLC activities.
- Lead and mentor junior developers while providing technical guidance and best practices.
- Work within CI/CD and Agile development environments.
- Support application deployments, production releases, and ongoing system enhancements.
Required Qualifications
- 5+ years of professional software development experience.
- 5+ years of hands-on Python development experience.
- 5+ years of hands-on PySpark / Spark experience.
- 5+ years of Data Engineering experience.
- Strong hands-on experience with AWS, including:
- Amazon S3
- AWS Glue
- Amazon EMR
- AWS Data Lake
- Delta Lake
- Experience working with legacy applications and modernization initiatives.
- 3+ years of SQL experience, including complex queries.
- 3+ years of Unix/Linux experience.
- Strong understanding of SDLC, Agile methodologies, and software development practices.
- Experience providing technical leadership and mentoring junior developers.
- Strong troubleshooting, analytical, and problem-solving skills.
- Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent professional experience.
Preferred Qualifications
- Experience within financial services or mortgage-related environments.
- Experience supporting regulatory reporting applications or data solutions.
- Experience with the Hadoop/Spark ecosystem.
- Experience developing real-time data processing solutions.
- Experience with CI/CD, cloud modernization, and DevOps practices.
- Strong production support and incident troubleshooting experience.
- Experience developing automation solutions and technical POCs.
- Experience working with large-scale enterprise data platforms.
Technical Skills
Primary: Python, PySpark, Apache Spark, Data Engineering, SQL
AWS: S3, Glue, EMR, Data Lake
Data Technologies: Delta Lake, Hadoop, Spark ecosystem, Batch Processing, Real-Time Data Processing
Systems: Unix, Linux, Legacy Application Modernization
Development Practices: SDLC, Agile, CI/CD, Production Support, Automation, POCs
Work Environment
- 100% onsite in McLean, VA
- Candidates must be local to the DMV region.
- Immediate availability preferred.
Why Join Accelyst?
At Accelyst, you will work on modern data and cloud engineering initiatives involving AI, automation, cloud technologies, and enterprise-scale solutions. Our collaborative and agile environment provides opportunities to work with modern technologies while solving complex business and technical challenges.
See All 226+ Senior Full Stack Engineer Jobs in McLean
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Find JobsSenior Full Stack Engineer Job Market in McLean
Who's Hiring
- Capital One105
- Information Technology Senior Management Forum25
- Booz Allen Hamilton19
- MITRE9
- Guidehouse9
Top Industries Hiring
- Technology & Software
- Banking & Financial Services
Senior Full Stack Engineer Jobs in McLean: Frequently Asked Questions
How do I get a senior full stack engineer job in McLean?
The strongest hiring activity in McLean comes from federal contractors, defense IT firms, and financial services companies concentrated in Tysons Corner and the Route 7 corridor. Candidates who hold an active security clearance or have experience building systems for government clients move to the front of the line fast. Familiarity with cloud-native architectures on AWS or Azure and full-cycle CI/CD pipelines is what McLean employers consistently prioritize over a broad generalist background.
Which companies hire senior full stack engineers in McLean?
Companies currently hiring senior full stack engineers in McLean include Capital One, Information Technology Senior Management Forum, and Booz Allen Hamilton, per current listings on Migrate Mate as of September 2026. McLean's employer base skews heavily toward large federal contractors, defense technology firms, and financial institutions with significant government-facing operations.
Are there remote senior full stack engineer jobs in McLean?
Yes, senior full stack engineering is among the more remote-compatible technical roles because the core work is code-based and asynchronous. About 30% of senior full stack engineer openings tied to McLean are remote or hybrid as of September 2026, though roles tied to classified government contracts typically require on-site presence at cleared facilities. Commercial and financial services employers in the Tysons area tend to offer the most flexible hybrid arrangements.
How can I get a senior full stack engineer job in McLean with little or no experience?
The most realistic entry path in McLean is landing a junior or mid-level engineer role at a federal contractor or defense tech firm, where internal promotion pipelines are well established and clearance sponsorship gives you a durable competitive edge. Smaller government IT consultancies in the Beltway corridor regularly hire engineers at the associate level and develop them toward senior roles. Building hands-on experience with React, Node.js, or Java and earning an AWS or Azure certification before applying sharpens your profile for the local market.
Which industries hire the most senior full stack engineers in McLean?
The sectors hiring the most senior full stack engineers in McLean are Technology & Software and Banking & Financial Services, based on current listings on Migrate Mate as of September 2026. McLean's proximity to federal agencies, the intelligence community, and major financial regulators makes those sectors the primary engines of local engineering demand.
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