Senior Full Stack Developer

Employment Type: Contractor

AgilityIO is a software development firm that designs and builds custom applications for startups and Fortune 500 companies. We are a global team of over 400 developers, QA engineers, project managers, and UX/UI designers with offices in New York City and Vietnam.

We are seeking a versatile Senior Full Stack Developer to create intuitive front-end experiences and scalable serverless backend systems. This role is ideal for someone who enjoys working across the stack, with a strong focus on API integrations and modern web technologies.

Job Responsibilities

• Architect, develop, and maintain full-stack applications using modern frameworks (e.g., TypeScript/React, Node.js, Python)

• Design and implement scalable backend services with AWS (Lambda, API Gateway, DynamoDB, S3, ECS, etc.)

• Collaborate with cross-functional teams to define, design, and deliver new features

• Ensure applications meet high standards of performance, responsiveness, and security

• Lead code reviews, mentor junior developers, and promote best practices

• Build and maintain CI/CD pipelines; monitor systems for reliability and performance

• Stay current with emerging technologies and propose innovative solutions

Qualifications & Experience

• 5+ years of full-stack development experience

• Strong proficiency in JavaScript/TypeScript and at least one backend language (Node.js, Python, or C#)

• Deep knowledge of AWS services and cloud architecture

• Experience with containerization (Docker, Kubernetes) and serverless architectures

• Proficiency with modern frontend frameworks (React preferred; Angular or Vue a plus)

• Solid understanding of RESTful APIs, GraphQL, and microservices

• Skilled in Git, testing frameworks, and agile methodologies

• Excellent problem-solving and communication skills

• Ability to collaborate effectively with internal and external teams in English

Nice To Have:

• AWS certifications (e.g., Solutions Architect, Developer Associate)

• Experience with Infrastructure as Code (CDK, Terraform, CloudFormation)

• Familiarity with DevOps practices and observability tools (e.g., AWS CloudWatch, Datadog, Prometheus)

What We Offer

• Competitive salary and performance-based bonuses

• Fully remote work flexibility

• Career growth opportunities and mentorship

• A collaborative, forward-thinking team culture

Ready to Make an Impact?

If you're passionate about both frontend and backend development and thrive in a dynamic, product-driven environment, we’d love to hear from you.