Senior Backend Developer – Node.js / Python (Fintech Role)

Winzons; India; On-site; INR 2,400,000 - 4,200,000; Full time

Benefits offered by this job

Equity participation

Competitive compensation

Job summary

Wohlig Transformations in Mumbai invites a Senior Backend Developer to architect and build scalable, high-performance backend systems. You will work on real-time market data, robust APIs, and secure financial transactions.

You will lead technical design discussions, mentor juniors, optimize queries, and ensure observability with logging/monitoring. The role offers equity participation and a fast-growing fintech environment.

Qualifications

• 5+ years of backend development experience in production-grade systems.
• Strong expertise in NodeJS and Python.
• Experience designing RESTful APIs and microservices.
• Proficient in PostgreSQL and query optimization.
• Hands-on with RabbitMQ and Kafka for real-time data.

Responsibilities

• Architect and build scalable backend services and APIs.
• Develop event-driven architectures with RabbitMQ and Kafka.
• Create data pipelines with PostgreSQL and BigQuery for analytics.
• Ensure security, performance, and reliability for low-latency apps.
• Lead code reviews and mentor junior developers.
• Collaborate with cross-functional teams to deliver features.

Skills

NodeJS

Python

RESTful APIs

Microservices

PostgreSQL

RabbitMQ

Kafka

BigQuery

Security best practices

Git & CI/CD

Tools

Docker

Kubernetes

Redis

BigQuery

Job description

Company Name: Wohlig Transformations

Job Role: Senior Backend Developer

Work Type: Full-Time

Experience: 5+ Years

Location: Mumbai (Phoenix Market City, Kurla West)

Description :

About Allvest :

• AI-driven financial planning and portfolio management platform
• Secure, data-backed portfolio oversight aligned with regulatory standards
• Building cutting-edge fintech solutions for intelligent investment decisions

Role Overview :

• Architect and build scalable, high-performance backend systems
• Work on mission-critical systems handling real-time market data and portfolio analytics
• Ensure regulatory compliance and secure financial transactions

Key Responsibilities :

• Design, develop, and maintain robust backend services and APIs using NodeJS and Python
• Build event-driven architectures using RabbitMQ and Kafka for real-time data processing
• Develop data pipelines integrating PostgreSQL and BigQuery for analytics and warehousing
• Ensure system reliability, performance, and security with focus on low-latency operations
• Lead technical design discussions, code reviews, and mentor junior developers
• Optimize database queries, implement caching strategies, and enhance system performance
• Collaborate with cross-functional teams to deliver end-to-end features
• Implement monitoring, logging, and observability solutions

Required Skills & Experience :

• 5+ years of professional backend development experience
• Strong expertise in NodeJS and Python for production-grade applications
• Proven experience designing RESTful APIs and microservices architectures
• Strong proficiency in PostgreSQL including query optimization and database design
• Hands-on experience with RabbitMQ and Kafka for event-driven systems
• 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 in financial applications
• Experience with Git, CI/CD pipelines, and modern development workflows
• Excellent problem-solving and debugging skills across distributed systems

Preferred Qualifications :

• Prior experience in fintech, banking, or financial services
• Familiarity with cloud platforms (GCP/AWS/Azure) and containerization (Docker, Kubernetes)
• Knowledge of frontend technologies for full-stack collaboration
• Experience with Redis or Memcached
• Understanding of regulatory requirements (KYC, compliance, data privacy)
• Open-source contributions or tech community participation

What We Offer :

• Opportunity to work on cutting-edge fintech platform with modern technology stack
• Collaborative environment with experienced team from leading financial institutions
• Competitive compensation with equity participation
• Challenging problems at the intersection of finance, AI, and technology
• Career growth in fast-growing startup environment