Switch Developer/ Integration/ Java Developer

Job Title : Principal Backend Engineer (AI-Driven)

Experience : 10+ Years

Location : Chandigarh

Tech Stack : PHP, Node.js, Laravel, MySQL, MongoDB

Additional Requirement : Hands-on experience with AI technologies, APIs, or ML integrations

Role Overview :

We're looking for a Principal Backend Engineer (AI-Driven) to design and lead scalable backend systems while driving AI adoption across products.

The role involves integrating AI-powered features, architecting intelligent systems, and mentoring engineering teams on modern backend and AI implementation.

Key Responsibilities :

• Design and lead backend architecture using PHP (Laravel/CodeIgniter) and Node.js
• Build scalable microservices / modular backend systems
• Develop APIs and backend workflows for AI-driven features
• Integrate AI APIs (OpenAI, LangChain or similar frameworks)
• Work with LLMs, embeddings, vector databases, and AI pipelines
• Ensure performance, scalability, and security of backend systems
• Mentor engineering teams and drive backend + AI best practices

Requirements :

• 10+ years of backend development experience
• Strong expertise in PHP / Node.js, MySQL, MongoDB
• Hands-on experience integrating AI/ML APIs or AI-powered features
• Strong system design and architecture skills
• Experience leading engineering teams

Good to Have :

• Prompt engineering or AI cost optimization
• Exposure to MLOps / ML pipelines

Job Title: Java Developer (Full-time)

Location: Pune (Onsite)

Experience Required: 3+ Years

Working Days: 5 Days (Mon to Fri)

Key Responsibilities:

• Design, develop, and deploy scalable microservices using Java and Spring Boot.
•  Implement RESTful APIs and integrate with external systems and databases.
• Build and manage services on AWS Cloud using components like ECS, Lambda, S3, RDS,
• and API Gateway.
• Collaborate with DevOps to integrate CI/CD pipelines for automated builds, tests, and
• deployments.
• Ensure application performance, reliability, and security in a cloud-native environment.
• Participate in code reviews, troubleshooting, and performance optimization.
• Work closely with architecture, QA, and product teams to deliver high-quality solutions.

Required Skills & Experience:

• Strong proficiency in Java, Spring Boot, and microservice architecture. 
• Hands-on experience with AWS Cloud services (ECS, EKS, Lambda, RDS, CloudWatch,etc.).
•  Knowledge of Docker, Kubernetes, and CI/CD tools (Jenkins, GitLab, or AWS
• CodePipeline).
• Experience with REST APIs, JSON, and message brokers (Kafka, RabbitMQ, or SNS/SQS).
• Proficiency in SQL and experience with relational databases (Oracle, MySQL, or
• PostgreSQL).
•  Familiarity with security best practices, monitoring, and logging in the cloud.

Minimum 5 years of experience in NestJS and NodeJS backend development.

● Strong expertise in microservices architecture.

● Proficient in working with SQL databases like PostgreSQL or similar.

● Hands-on experience with ORMs (e.g., TypeORM or other popular ORMs).

● Solid understanding of Swagger for API documentation.

● In-depth knowledge of REST API architecture.

● Basic understanding of Docker/containerization tools.

● Excellent debugging and problem-solving skills.

● Strong communication skills for effective collaboration across teams.

● Sound knowledge of design patterns and backend best practices.

● System design expertise (a strong plus).

● Basic knowledge of frontend technologies like React or Angular (a plus).

About the Role

We are undertaking a platform migration from our existing WordPress site to a modern React frontend. We are seeking a highly capable Backend Engineer on a 1-month contract to lead the backend aspects of this transition. The ideal candidate has strong experience with serverless backends and API-first architectures, particularly using Cloudflare Workers and the Cloudflare ecosystem. You will collaborate closely with our in-house Frontend Engineer (specialized in React) to deliver a seamless, performant, and secure end product.  

Key Responsibilities

Audit current WordPress backend (data structures, plugins, custom code). Design and implement a backend solution leveraging Cloudflare Workers, Cloudflare KV / Durable Objects, and related services (or propose suitable alternatives such as Node.js/Express or headless CMS if appropriate). Develop secure APIs for authentication, content, and form handling. Migrate existing WordPress data (pages, posts, forms, and media) into the new system. Integrate with our CRM (_Zoho_) and other existing systems. Ensure compliance with NZ data protection standards. Deploy backend on Cloudflare (and/or coordinate with existing hosting infrastructure as needed). Provide documentation and handover to the internal team.

Qualifications & Skills

Proven experience in backend engineering with serverless platforms (Cloudflare Workers, AWS Lambda, or similar). Strong knowledge of RESTful APIs, authentication, and security best practices. Familiarity with Cloudflare KV, Durable Objects, R2, or equivalent distributed data solutions. Experience with WordPress architecture and React-based frontend integration. Experience in migration projects (legacy CMS → modern stack) highly valued. Strong collaboration and communication skills, with the ability to work effectively alongside frontend specialists.

Deliverables

Backend environment and Cloudflare Worker (or alternative) architecture established. Secure APIs deployed and tested with React frontend. Migration of content/data from WordPress. Integration with Zoho CRM and forms. Production deployment. Documentation + handover.

Duration: 1 month.

Engagement: Remote, with short daily and hourly weekly check-ins.

Compensation: 75,000 INR

Experience with Cloudflare Workers, the Cloudflare CDN, prior Wordpress migration experience, and any experience of working alongside frontend engineers prioritized. A huge bonus would be experience with Zoho CRM/Zoho Forms.

• Developing and maintaining server-side network components.
• Collaborating with front-end developers on the integration of elements.
• Designing customer-facing UI and back-end services for various business processes.
• Developing high-performance applications by writing testable, reusable, and efficient code.
• Implementing effective security protocols, data protection measures, and storage solutions.
• Running diagnostic tests, repairing defects, and providing technical support.
• Documenting Node.js processes, including database schemas, as well as preparing reports.
• Recommending and implementing improvements to processes and technologies.
• Keeping informed of advancements in the field of Node.js development.

• At least two years of experience as a Node.js developer.
• Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.
• Knowledge of front-end technologies such as HTML5 and CSS3.
• Superb interpersonal, communication, and collaboration skills.
• Exceptional analytical and problem-solving aptitude.
• Great organizational and time management skills.
• Availability to resolve urgent web application issues outside of business hours.

About Us

Rezo.ai is an AI-Powered Contact Center that enables enterprises to enhance customer experience and boost revenue by automating and analyzing customer agent interactions across multiple channels including voice, email, chat/WhatsApp, and social, at the required scale, whilst training agents with minimal costs

How do we do it

Rezo’s AI-Powered contact center leverages groundbreaking technologies in AI, ML, ASR, NLP, RPA, and predictive intelligence to transform customer experience and reduce costs by automating, and analyzing customer-agent conversations across multiple channels including voice, email, chat/Whatsapp, and social media, whilst coaching them. 

What Makes You A Good Fit :

• You are passionate about technology and software development
• You are continuously experimenting and learning more
• You love solving problems and digging into complex problems
• You believe in taking decisions as close to the product and technical expertise as possible.
• You believe in creativity, trying new things and learning from your mistakes.
• You believe in sharing insights and helping one another to build an even better user plan.

Key Skills Required:

• 3-8 years of Experience in Java Product Development.
• Good understanding of MYSQL.
• Practitioner of clean code and SOLID principles
• Exposure to GIT and Maven
• Good verbal and written communication skills
• Understands different major language paradigms (Object Oriented and Functional)
• Understanding and Experience with Multi-Threaded Applications
• Prior Experience in a SAAS Product company is a Plus 
• Experience with Managing Team is a plus

Educational Background:

• Bachelor's/Master’s degree in Computer Science Engineering from Tier 1 College is a Plus.

Why You Should Join Rezo.AI

• You will be surrounded by Passionate Team Members with Exposure to Product Building
• You will be learning About various Product Development Cycles
• Big Career Opportunities
• Learning by doing
• The Opportunity of Innovation
• Recognition
• Enhanced Responsibility and Team Management

Cultural fitment 

Work at the heart of AI and customer engagement.

If you are fascinated by AI and looking to work with the latest AI technologies, in a fast growing and flexible work environment with immense growth opportunities, come and join us.

Rezo is the place to be if you want to work in an atmosphere where you can do meaningful research, contribute to the platform, and grow fast.

Culture/Values

We believe that allowing employees to pursue their interests and challenge the existing quo only helps to make Rezo a successful workplace. To that end, we are committed to assisting our employees in enhancing the skills that are vital to their professional growth.

FOCUS, INTEGRITY, TEAMWORK, PASSION, INNOVATION

Why Us?

We are a fast-paced start-up with some of the best talents from diverse backgrounds. Working together to solve customer service problems. We believe a diverse workforce is a powerful multiplier of innovation and growth, which is key to providing our clients with the best possible service and our employees with the best possible career. Diversity makes us smarter, more competitive, and more innovative.

Visit our website: https://rezo.ai/">https://rezo.ai/ for more information

The ideal candidate for this position will be responsible for working on PHP plugins and the PHP developer role.

Job Location: Sultanpur, New Delhi (on-site) 

Job Role: PHP Developer

Design, build, test, integrate, implement and maintain complex or large-scale web pages and web applications. 

• In-Depth knowledge of PHP, HTML, CSS, SQL, XML/Json, AJAX, JQuery, LAMP/WAMP   environments. 
• Expertise in PHP-based e-commerce portals like Magento, Shopify, Woocommerce, etc. 

Duties & Responsibilities: 

• Understanding of business requirements and the process of translating them into well-engineered and integrated technical solutions and reusable components. 
• Development of custom modules of Magento, Shopify, and Woocommerce.
• Integrating Magento / Other Ecommerce applications with other external applications like ERP etc. 
• Write elegant and clean code as a PHP Developer. 
• Implement plugins for Magento, Shopify, Woocommerce, etc. 
• Create clean, well-documented products, software, and services. 
• Work closely with product management, UX designers & QA. 
• Always look for ways to make the UI behave and perform better. 
• Develop technical solutions to complex problems which use ingenuity and creativity.
• Design, code, test, debug and document software according to the functional requirements 

Learn about our Culture: 

Wigzo is a culture-driven company powered by its employees, their vision, and their inspiration. All the employees live by the culture and values that define us. We value people for their talent, personality, competency, and ability to learn and grow. 

We create a work environment that allows people to thrive and show their best performance. We believe in meritocracy. We take pride in our diversity and strive to embrace diverse voices and create an inclusive workplace. To know more please visit: https://www.wigzo.com/employee-spotlight/">https://www.wigzo.com/employee-spotlight/

About Wigzo Technologies by Shiprocket:

Wigzo is an e-commerce marketing automation platform in which Shiprocket has acquired a majority stake. Together, we help businesses of all sizes delve deeper into data to unleash possibilities to enhance sales and income. Wigzo enables e-commerce firms to personalize each customer interaction, resulting in increased engagement, retention, loyalty, and lifetime value. 

An Omnichannel marketing automation suite, Wigzo enables you to understand your customers/visitors more intelligently so you market to them what they want and not what you have. It works on real-time customer insights with real-time communication and a personalization engine that helps marketers manage basic communication and also provides dynamic email, personalized notifications, user retention, real-time engagement, real-time content, and much more. 

Wigzo is holding 1000+ customers globally, it’s been 6+ years in the industry, with 100+ e-commerce brands working with us which results in 15 times business growth. For more information please visit our website: https://www.wigzo.com/">https://www.wigzo.com/