Backend Developer (python)

Who are we :

Trendlyne is a funded, profitable products startup in the financial markets space. We have cutting-edge analytics products built for Indian and US customers, for stock markets and mutual funds.

Our founders are IIT + IIM graduates, with strong tech and marketing experience. We have top finance and management experts on the Board of Directors.

What do we do :

We build powerful analytics in the US and Indian stock market space that are best-in-class. Organic growth in B2B and B2C products has already made the company profitable. We deliver 1 billion+ APIs every month to B2B customers, and have a B2C website and app.

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

Why This Role?

• Real scale, real problems - billions of rows of financial data, 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 - small, senior team means your decisions matter and your work ships fast.
• Direct visibility - work closely with founders and product leads on features that reach hundreds of thousands of users.

Tech Stack:

Language: Python

Frameworks: Django / FastAPI / Flask

Databases: PostgreSQL / MySQL

What You'll Do:

• Design, develop, and maintain scalable backend systems capable of handling billions of rows of data and serving millions of API requests per hour
• Translate product requirements into robust system architecture - owning the full 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, helping 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:

• 3-6 years of hands-on experience with Python and at least one of Django / FastAPI / Flask.
• Strong command of relational databases - PostgreSQL or MySQL - and experience optimising 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 - you build it, ship it, and take responsibility for it in production.
• Strong communication skills - ability to articulate technical decisions clearly to both engineers and non-technical stakeholders.
• Bonus: Familiarity with JavaScript, HTML, or CSS is a plus but not required.

Description :

Job Title : Python Engineer- AI Agents & Code Optimization

Experience : 2+ Years

Employment Type : Full-time

Location : Remote

About the Role :

We are looking for a hands-on Software Engineer to build and improve AI agents that work directly on our production code.

Your core responsibility will be to design and evolve a specialized AI agent that deeply understands our codebase and actively helps make it faster, cleaner, simpler, and cheaper to maintain.

This is not a research role. This is real work on real systems with real business impact.

How We Work :

- Business impact first : Cheaper, Faster, Better

- Simple beats complex always

- Small changes, shipped fast

- You own your work end-to-end

- First question is always : Do we even need this?

- Flat team, zero micromanagement

- Decisions can change adaptability matters

- No long PRDs : one clear goal ? discuss ? execute

- Ship, measure, improve, repeat

What You Will Do :

- Build and use AI agents to optimize, refactor, and remove code

- Feed logs, metrics, and performance data back into AI agents

- Profile applications and identify performance bottlenecks

- Optimize SQL queries and database usage

- Improve deployment pipelines and release processes

- Continuously improve internal AI tooling

- Work closely with infrastructure and production systems

Tech You Should Be Comfortable With :

You dont need to be an expert in everything, but you should be comfortable working with :

- Linux CLI (Required)

- Python

- PHP

- SQL (MySQL or MariaDB)

- Shell scripting

- Large Language Models (LLMs)

What Were Looking For :

- 2+ years of software engineering experience (or strong hands-on projects)

- Solid understanding of performance optimization

- Experience cleaning up legacy or messy codebases

- Practical profiling and debugging skills

- Comfortable working close to infrastructure and deployments

- Automation-first mindset

- Ability to explain technical decisions clearly and simply in English

Nice to Have :

- Experience building AI agents

- Exposure to large or long-running systems

- CI/CD or deployment automation experience

When You Join :

- Career Growth : You are expected to grow into a tech lead, entrepreneur, or highly skilled specialist

- Bleeding-Edge Tech : Hands-on experience with alpha/beta software, cutting-edge infrastructure, and top tier hardware

- Global Exposure : Work with a global team and directly with C-level leadership

- Real Impact : Your code directly solves real user problems and moves the company forward

Proficient in Golang, Python, Java, C++, or Ruby (at least one)

Strong grasp of system design, data structures, and algorithms

Experience with RESTful APIs, relational and NoSQL databases

Proven ability to mentor developers and drive quality delivery

Track record of building high-performance, scalable systems

Excellent communication and problem-solving skills

Experience in consulting or contractor roles is a plus

• Discussing project aims with the development team.
• Designing and building web applications using CodeIgniter.
• Troubleshooting issues in the implementation and debug builds.
• Working with front-end and back-end developers on projects.
• Testing functionality for users and the backend.
• Ensuring that integrations run smoothly.
• Scaling projects based on client feedback.
• Recording and reporting on work done in Codeignitor/Laravel
• Maintaining web-based applications.
• Presenting work in meetings with management.

Desired Candidate Profile

• Experience working with PHP, performing unit testing, and managing APIs such as REST.
• A solid understanding of application design using Codeignitor/Laravel.
• Knowledge of database design and querying using SQL.
• Proficiency in HTML and JavaScript.
• Practical experience using the MVC architecture.

Responsibilities

• Develop, deploy, and maintain scalable products
• Participate in code reviews, and design discussions to ensure code quality and distribute knowledge
• Pair with team members for functional and non-functional requirements to write well-crafted, well-tested, readable, and maintainable code.
• Help to define roadmap and architecture based on technology and business needs
• Understand business requirements and work closely with the business to provide solutions

Eligibility

• Strong expertise in Backend Python Development with skills to create APIs, integrate the functions into UI, and store and retrieve data from a variety of databases.
• Strong experience with Django/Flask.
• Strong experience in writing unit tests.
• B.Tech/B.E (Preferred CSE)

As an SDE, you will develop a deep understanding of our business, work closely with development teams and own the architecture and end-to-end delivery of software components.

Requirements:

• Exp: 3 - 8 years.
• 4 + years' experience building successful production software systems.
• A solid grounding in Computer Science fundamentals (based on a BS or MS in CS or related field).
• The ability to take convert raw requirements into good design while exploring technical feasibility tradeoffs.
• Expertise in System design (design patterns, LLD, HLD, Solid principle, OOAD, Distributed systems etc. ), Architecture (MVC/Micro services).
• Excellence in technical communication.
• Has experience in mentoring other software developers.
• BS/MS in Computer Science or equivalent.
• Experience developing service oriented architectures and an understanding of design for scalability, performance and reliability.
• Demonstrated ability to mentor other software developers to maintain architectural vision and software quality.
• Demonstrated ability to achieve stretch goals in a highly innovative and fast paced environment.
• Expertise in delivering high-quality, innovative application.
• Strong desire to build, sense of ownership, urgency, and drive.
• Strong organisational and problem solving skills with great attention to detail.
• Ability to triage issues, react well to changes, work with teams and ability to multi-task on multiple products and projects.
• Experience building highly scalable, high availability services.
• The ideal candidate will be a visionary leader, builder and operator.
• He/she should have experience leading or contributing to multiple simultaneous product development efforts and initiatives.
• He/she needs to balance technical leadership with strong business judgment to make the right decisions about technology choices.
• He/she needs to be constantly striving for simplicity, and at the same time demonstrate significant creativity, innovation and judgme.
• Proficiency in, at least, one modern programming language.
• Experience in SQL or Non-SQL database.
• Strong sense of ownership, urgency, and drive.
• Demonstrated leadership abilities in an engineering environment in driving operational excellence and best practices.
• Demonstrated ability to achieve stretch goals in a highly innovative and fast paced environment.
• Excellent communication, collaboration, reporting, analytical and problem solving skills.
• Good understanding of at least some of the modern programming languages (Java) and open-source technologies

• Have the passion and experience for building responsive, elegant and engaging experiences with future friendly web technologies.
• Integration of user-facing elements developed by front-end developers with server side logic.
• Writing reusable, testable, and efficient code with proper documentation. Design and implementation of low-latency, high-availability, and performant applications Implementation of security and data protection Integration of data storage solutions.
• Continually keep yourself and your design team updated with the latest changes in your industry’s standards

We are looking to hire a talented ruby on rails developer to manage the interchange of data between our users and the server. You will be responsible for developing and maintaining the server-side logic for the central database, testing performance, troubleshooting, and integrating front-end elements into the application.

To ensure success as a ruby on rails developer, you should have extensive experience working with ruby and back-end integration techniques. Ultimately, a top-level ruby on rails developer can create clean, functional code that perfectly suits the needs of the company.

• Designing and developing new web applications.
• Maintaining and troubleshooting existing web applications.
• Writing and maintaining reliable Ruby code.
• Integrating data storage solutions.
• Creating back-end components.
• Identifying and fixing bottlenecks and bugs.
• Integrating user-facing elements designed by the front-end team.
• Connecting applications with additional web servers.
• Maintaining APIs.

• Bachelor’s degree in computer science, computer engineering, or related field.
• Experience working with ruby on rails as well as libraries like Resque and RSpec.
• Ability to write clean ruby code.
• Proficiency with code versioning tools including Git, Github, SVN, and Mercurial.
• Experience with AngularJS or BackboneJS.
• Familiarity with MVC, Mocking, RESTful, and ORM.
• Good understanding of front-end technologies including HTML5, JavaScript, and CSS3.
• Knowledge of server-side templating languages including Slim and Liquid.
• Familiarity with testing tools.