Senior Fullstack Developer (MERN Stack)

Strategio Inc.; Dallas (TX); Hybrid; USD 120,000 - 160,000; Full time

Job summary

Strategio in Dallas, TX, is seeking a Senior Fullstack Developer with strong MERN expertise to modernize enterprise applications across financial services and energy. You will design, build, and deploy scalable web solutions across the full software lifecycle.

The role emphasizes collaboration with cross-functional teams, API integration, and delivering high-quality code in an Agile environment. You will mentor junior developers and contribute to architecture discussions.

Qualifications

• Senior Fullstack Developer with MERN stack expertise.
• Strong hands-on experience with MongoDB, Express.js, React.js and Node.js.
• Experience with Oracle or comparable relational databases, including SQL queries and performance optimization.
• Comfortable in Agile environments and collaborating across teams.
• Proactive problem-solver delivering scalable, maintainable solutions.
• Excellent communication with technical and non-technical stakeholders.

Responsibilities

• Design, develop, test, and deploy scalable enterprise web applications using the MERN stack.
• Build and integrate RESTful APIs and GraphQL services for cross-application communication.
• Develop responsive frontend with React.js and JavaScript while building robust backend services with Node.js and Express.js.
• Work with MongoDB, Oracle, and relational databases to support data integration and queries.
• Collaborate with cross-functional teams to troubleshoot integrations and optimize performance.
• Develop and maintain automated tests, ensuring code quality and best practices.
• Participate in Agile ceremonies, code reviews, and continuous improvement initiatives.
• Maintain technical documentation and communicate progress to stakeholders.

Skills

MERN stack

MongoDB

Express.js

React.js

Node.js

JavaScript

SQL/Oracle

API integration

Agile/Scrum

Troubleshooting

Tools

RESTful APIs

GraphQL

AWS

Azure

CI/CD

Job description

Senior Fullstack Developer (MERN Stack)

Location

Dallas, TX - Hybrid (3 days in office)

About the Role

At Strategio, we are looking for a Senior Fullstack Developer with strong hands-on experience in the MERN stack to support the development and modernization of enterprise applications across financial services and energy.

You will work across the full software development lifecycle, designing, building, integrating, and deploying scalable applications. Collaborating with cross-functional engineering teams, you will help deliver reliable, high-quality solutions that solve complex business challenges and support enterprise transformation.

About You

• You are an experienced Fullstack Developer with strong hands-on expertise in MongoDB, Express.js, React.js, and Node.js (MERN stack).
• You have a solid understanding of JavaScript, modern frontend development, backend services, and API integration.
• You have experience working with Oracle or comparable relational databases, including SQL queries and performance optimization.
• You are comfortable working in Agile environments, collaborating with engineering teams, and contributing throughout the software development lifecycle.
• You are a proactive problem-solver who can troubleshoot complex technical challenges and deliver scalable, maintainable solutions.
• You communicate effectively with technical and non-technical stakeholders and take ownership of your deliverables.

As a Strategio Full-Stack Developer, You Will:

• Design, develop, test, and deploy scalable enterprise web applications using the MERN stack.
• Build and integrate RESTful APIs and GraphQL services to enable seamless communication across applications and systems.
• Develop responsive frontend applications using React.js and JavaScript while building robust backend services with Node.js and Express.js.
• Work with MongoDB, Oracle, and relational databases to support application functionality, data integration, and query optimization.
• Collaborate with cross-functional teams to troubleshoot integration challenges, optimize application performance, and improve system reliability.
• Develop and maintain automated tests, ensuring code quality, maintainability, and adherence to engineering best practices.
• Participate in Agile ceremonies, technical discussions, code reviews, and continuous improvement initiatives.
• Maintain technical documentation and communicate development progress, challenges, and solutions to relevant stakeholders.

Core Technical Skills

• Frontend: React.js, JavaScript, modern web application development.
• Backend: Node.js, Express.js, server-side application development.
• Databases: MongoDB, Oracle or comparable relational databases, SQL, query optimization.
• API Development: RESTful APIs, GraphQL, system integration.
• Software Engineering: Fullstack development, automated testing, debugging, performance optimization, clean code principles.
• Methodologies: Agile/Scrum, collaborative software development.

Nice to Have

• Experience with AWS, Azure, or other cloud platforms.
• Knowledge of modern application architectures, including microservices.
• Exposure to DevOps practices, CI/CD pipelines, and deployment automation.
• Experience optimizing application performance and scalability.
• Previous experience delivering technology solutions within financial services or energy.
• Experience contributing to technical design discussions and architecture decisions.

At Strategio, we are committed to creating a diverse and inclusive work environment where everyone feels valued and respected. We work hard to create a culture of kindness, honesty, and respect, and we are dedicated to creating higher-performing organizations by addressing the lack of diversity in the workforce. Individuals seeking employment are considered without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, status as a protected veteran, or disability.