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Senior Full Stack Engineer
eSolutionsFirst, LLCMcLean, VA🇺🇸United StatesPosted 12 Jul 2026
Quick Overview
Work Type
Hybrid
Level
Mid Senior
Job Description
We are seeking a Senior Full Stack Engineer to lead the design, development, and delivery of scalable enterprise applications across frontend, backend, APIs, and data platforms. This role requires a hands-on technical leader who can architect complex systems, mentor engineers, drive best practices, and deliver high-quality solutions using .NET, React, Python, and SQL technologies.
Key Responsibilities
- Architect, design, and develop scalable full-stack applications using .NET, React, Python, and SQL.
- Lead technical design discussions and establish engineering standards, patterns, and best practices.
- Design secure, scalable, and high-performing RESTful and GraphQL APIs.
- Optimize database architecture, data modeling, indexing strategies, and query performance.
- Own end-to-end delivery of major features from requirements through production deployment.
- Mentor engineers through code reviews, technical guidance, and knowledge sharing.
- Collaborate with Product, Engineering, and DevOps teams to define roadmaps and technical solutions.
- Drive cloud-native application development and microservices architecture.
- Partner with DevOps teams on CI/CD, observability, monitoring, and platform reliability.
- Lead troubleshooting, incident response, and production issue resolution.
Required Qualifications
- 10+ years of software development experience with 3+ years in a Senior Engineer or Technical Lead role.
- Deep expertise in C#, ASP.NET Core, Entity Framework, and microservices architecture.
- Strong experience building large-scale React applications and modern frontend architectures.
- Advanced knowledge of RESTful APIs, GraphQL, API security, versioning, and performance optimization.
- Proficiency in Python for backend services, automation, or data engineering.
- Strong SQL expertise including query optimization, indexing, schema design, and performance tuning.
- Experience with cloud platforms (Azure, AWS, or Google Cloud Platform).
- Hands-on experience with Docker, Kubernetes, distributed systems, and event-driven architectures.
- Strong leadership, communication, and stakeholder management skills.
Preferred Qualifications
- Experience with Terraform, Bicep, or Infrastructure-as-Code frameworks.
- Knowledge of OAuth2, OpenID Connect, Zero Trust, and application security best practices.
- Experience integrating AI/ML services or LLM-based solutions.
- Background in healthcare, finance, insurance, or other regulated industries.
- Open-source contributions, technical blogging, or conference speaking experience.
Skills
Docker
Microservices
SQL
AWS
Azure
C#
.NET
ASP.NET
Google Cloud
GraphQL
Kubernetes
LLM
Python
React
Stakeholder Management
Terraform
Zero Trust
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