Senior Backend Developer (Python) - 3-6 years

Trendlyne Technologies; Bengaluru; On-site; INR 1,400,000 - 2,400,000; Full time

Job summary

Trendlyne is seeking a Backend Engineer to design, develop, and maintain scalable backend systems in Bengaluru. You will handle billions of data rows, support millions of API requests per hour, and own end-to-end development from requirements to release.

The role emphasizes ownership, collaboration with product managers, and delivering high-quality features while maintaining robust documentation. Ideal candidates have 3–6 years of Python experience with Django/FastAPI/Flask, strong SQL with

Qualifications

• 3–6 years of hands-on Python development with Django/FastAPI/Flask.
• Strong SQL experience with PostgreSQL or MySQL.
• Solid Redis caching understanding.
• Experience building scalable REST APIs.
• Ownership mindset and production responsibility.
• Strong communication with engineers and stakeholders.
• Bonus: familiarity with JavaScript, HTML, or CSS.

Responsibilities

• Design, develop, and maintain scalable backend systems that handle billions of rows of data and serve millions of API requests per hour.
• Translate product requirements into robust system architecture and own the entire development lifecycle from requirement to release.
• Collaborate with product managers and cross‑functional teams to scope and deliver high‑quality features.
• Write clean, well‑documented code and maintain technical documentation for engineering contributors.
• Drive and participate in design and code reviews to uphold engineering standards.
• Mentor junior developers and help build a strong engineering culture.
• Contribute to evolving backend best practices as the product scales.

Skills

Python

Django/FastAPI/Flask

REST APIs

PostgreSQL

MySQL

Redis

Ownership mindset

Communication

Tools

PostgreSQL

MySQL

Redis

Job description

About Us

Trendlyne is a funded, profitable products startup in the financial markets space. We build cutting‑edge analytics for Indian and US customers across stock markets and mutual funds. Our founders are IIT + IIM graduates with strong tech and marketing experience, and we have top finance and management experts on our Board of Directors.

What We Do

We deliver more than 1billion APIs each month to B2B customers and operate a B2C website and app. Our organic growth in both B2B and B2C products has made the company profitable.

Job Details

Location: Bangalore (On‑site) | Experience: 3–6years

Why This Role

• Real‑scale challenges: billions of financial data rows, millions of API requests per hour, live market feeds.
• Cutting‑edge product work: AI products, online backtesting engines, data visualization, and machine learning integrations.
• High ownership, low bureaucracy: a small, senior team where your decisions matter and your work ships fast.
• Direct visibility: collaborate closely with founders and product leads on features that reach hundreds of thousands of users.

Tech Stack

• Language: Python
• Frameworks: Django, FastAPI, or Flask
• Databases: PostgreSQL or MySQL
• Caching: Redis and high‑throughput caching strategies

What You'll Do

• Design, develop, and maintain scalable backend systems that handle billions of rows of data and serve millions of API requests per hour.
• Translate product requirements into robust system architecture and own the entire development lifecycle from requirement to release.
• Collaborate closely with product managers and cross‑functional teams to scope and deliver high‑quality features that address real user needs.
• Write clean, well‑documented code and maintain technical documentation that enables other engineers to contribute efficiently.
• Drive and participate in design and code reviews, ensuring engineering standards are upheld across the team.
• Mentor junior developers and help build a strong engineering culture within the team.
• Contribute to and evolve best practices for backend development as the team and product scale.

What We're Looking For

• 3–6years of hands‑on experience with Python and at least one of Django, FastAPI, or Flask.
• Strong command of relational databases (PostgreSQL or MySQL) and experience optimizing queries at scale.
• Solid understanding of Redis and caching strategies in high‑throughput environments.
• Experience designing and building REST APIs that are performant, reliable, and maintainable.
• Ownership mindset: build it, ship it, and take responsibility for it in production.
• Strong communication skills – articulate technical decisions clearly to engineers and non‑technical stakeholders.
• Bonus: familiarity with JavaScript, HTML, or CSS.