Junior Backend Engineer – Node.js/Python (AI & Fintech Systems)

Winzons; India; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Wohlig Transformations is seeking a Senior Backend Engineer to architect and build scalable backend systems in Mumbai. You will work on mission-critical platforms processing real-time data and analytics, while leveraging Generative AI to enhance automation and data intelligence.

You will design APIs with NodeJS/Python, drive event-driven architectures, and ensure secure, low-latency performance across services. mentorship and collaboration are key parts of the role.

Qualifications

• Bachelor’s degree in Computer Science or related field preferred.
• 1–3 years of backend development experience.
• Strong NodeJS and Python production experience.

Responsibilities

• Design, develop, and maintain scalable backend services and APIs using NodeJS and Python.
• Build event-driven architectures with RabbitMQ and Kafka for real-time data.
• Develop data pipelines using PostgreSQL and BigQuery for analytics.
• Integrate Generative AI models into backend systems for automation and insights.
• Develop AI-powered features such as recommendations or document processing.
• Ensure reliability, security, and low latency for mission-critical systems.
• Mentor junior engineers and lead design discussions.
• Collaborate with cross-functional teams to deliver features.
• Implement monitoring, logging, and observability.

Skills

NodeJS

Python

RESTful APIs

Microservices

Generative AI

PostgreSQL

RabbitMQ

Kafka

BigQuery

GCP/AWS/Azure

Docker/Kubernetes

Redis

Education

Bachelor’s Degree in Computer Science

Tools

OpenAI

LangChain

Embeddings

Job description

Company Name: Wohlig Transformations

Job Role: Senior Backend Engineer

Work Type: Full-Time

Experience: 1-3 Years

Qualification: Bachelor’s Degree in Computer Science or related field preferred

Location: Mumbai

Job Overview

Architect and build scalable, high-performance backend systems while working on mission-critical platforms that process real-time market data and portfolio analytics. The role also involves leveraging Generative AI capabilities to enhance data intelligence, automation, and user-facing features, while ensuring regulatory compliance and secure financial transactions.

Key Responsibilities

• Design, develop, and maintain scalable backend services and APIs using NodeJS and Python
• Build event-driven architectures using RabbitMQ and Kafka for real-time data processing
• Develop and manage data pipelines integrating PostgreSQL and BigQuery for analytics and warehousing
• Integrate and deploy Generative AI models (LLMs, embeddings, AI APIs) into backend systems for automation, insights, and intelligent workflows
• Design AI-powered features such as recommendation systems, document processing, or conversational interfaces
• Ensure system reliability, security, and low-latency performance for mission-critical systems
• Lead technical design discussions, conduct code reviews, and mentor junior engineers
• Optimize database queries, implement caching strategies, and improve overall system performance
• Collaborate with cross-functional teams to deliver end-to-end product features
• Implement monitoring, logging, and observability solutions

Required Skills and Qualifications

• 2+ years of professional backend development experience
• Strong expertise in NodeJS and Python for production-grade applications
• Proven experience building RESTful APIs and microservices architectures
• Experience working with Generative AI frameworks/APIs (OpenAI, LangChain, vector databases, prompt engineering)
• Understanding of integrating LLMs into production systems (RAG, embeddings, fine-tuning basics)
• Strong proficiency in PostgreSQL, including query optimization and schema design
• Hands-on experience with RabbitMQ and Kafka
• Experience with BigQuery or similar data warehousing solutions
• Solid understanding of distributed systems, scalability patterns, and high-traffic applications
• Strong knowledge of authentication, authorization, and security best practices
• Experience with Git, CI/CD pipelines, and modern development workflows
• Excellent problem-solving and debugging skills
• Exposure to fintech or financial services, cloud platforms (GCP/AWS/Azure), Docker/Kubernetes, caching tools (Redis/Memcached), and regulatory requirements (KYC, compliance, data privacy) is a plus