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Job Title: Senior Full-Stack Developer

Location: Lucknow

Salary: 12 - 18 LPA

Company: Jaxl Innovations Private Limited

Experience Required: 4–5 Years 

About Jaxl Innovations

Jaxl is reimagining how modern communication tools are built for consumers, businesses, and developers alike. We’re the creators of Jaxl Phone, a next-generation calling app for consumers that puts privacy, clarity, and reliability first, and Jaxl Business Phone, a powerful solution for companies that need scalable, programmable, and deeply customizable voice infrastructure. Alongside these flagship products, we provide developers with robust APIs, tools, and simulators to design, test, and deploy advanced voice and messaging workflows. From interactive IVR simulations and real-time audio pipelines to low-latency tunneling tools like Grout, Jaxl makes it easy to build and iterate fast. Whether you're launching a secure consumer calling app, running a full-blown VoIP platform, or embedding smart voice features into your existing systems, Jaxl gives you the flexibility, control, and performance to get it done.

Role Overview

As a Senior Full-Stack Developer, you will be responsible for designing, developing, and maintaining high-performance web applications and backend systems. You will collaborate closely with product, design, and engineering teams to deliver seamless user experiences and reliable backend services.

Key Responsibilities

• Design, build and maintain scalable full-stack applications
• Develop responsive UI using HTML, CSS, JavaScript, TypeScript
• Build and maintain backend services using Python, Django, REST APIs
• Write efficient, reusable, and testable code across the stack
• Integrate frontend components with backend logic using AJAX, JSON, API calls
• Work with databases (PostgreSQL/MySQL/NoSQL) and optimize queries
• Participate in architectural decisions, code reviews, and system design
• Collaborate with cross-functional teams to translate requirements into technical solutions
• Ensure application security, performance, and reliability
• Troubleshoot, debug, and upgrade existing systems
• Mentor junior developers and uphold coding best practices

Required Skills & Qualifications

• 4–5 years of hands-on experience as a Full-Stack Developer
• Strong proficiency in:
  • HTML5, CSS3, JavaScript, TypeScript
  • Python & Django Framework
  • AJAX, REST API development
• Experience with frontend frameworks (React, Angular, or Vue preferred)
• Strong understanding of database systems (MySQL/PostgreSQL/NoSQL)
• Knowledge of cloud platforms (AWS, GCP or Azure) is a plus
• Experience with Git, CI/CD pipelines, and version control workflows
• Understanding of security best practices and performance optimization
• Ability to work independently and take ownership of features
• Strong analytical, problem-solving, and communication skills

Good-to-Have Skills

• Experience with WebSockets, real-time systems
• Familiarity with DevOps tools (Docker, Kubernetes)
• Experience with microservices architecture
• Knowledge of messaging queues (RabbitMQ, Kafka, Redis)

What We Offer

• Opportunity to work on high-impact communication and AI-driven products
• Fast-paced growth environment with real ownership
• Competitive salary & performance bonuses
• Flexible work culture
• Learning and development opportunities