Principal Engineer - Backend

Client Company is a profitable, rapidly scaling unicorn which is extremely well capitalized. Client has a very strong moat in the consumer lending space on the back of which it is entering into additional large markets such as E-comm and UPI. 

Client company is now entering its next phase of growth from a fast-scaling startup to a robust, high-scale financial platform serving millions of users daily. You'll design systems built for 10x100x growth, make the key technical trade-off calls, and stay deeply hands-on. Beyond building, you'll mentor engineers and work directly with founders and product teams to translate business goals into scalable, reliable systems. 

This role is an opportunity to: 

• Shape the next-generation architecture for a high-throughput fintech system 
• Build systems designed to scale 10x–100x from current volumes 
• Solve real-world problems across performance, reliability, and financial-grade security 

Responsibilities 

•  Design and evolve the platform architecture to support 10x–100x growth 
•  Own systems end-to-end from the first design decision to production impact 
•  Lead system design discussions and set the long-term technical direction for the platform 
•  Identify scale bottlenecks early and drive solutions 
•  Mentor and elevate engineers through design reviews, code quality, and architectural thinking 
•  Partner directly with founders and product teams to turn business priorities into scalable systems 
•  Operate with high ownership in a fast-paced environment where priorities evolve quickly 
•  Drive projects independently own timelines, coordinate with teams, and see delivery 
•  Conduct rigorous code reviews and champion engineering best practices across the team 
•  Proactively identify gaps in the system and come up with concrete approaches to address them 
•  Solve technical problems across the company not just confined to a single pod 
•  Challenge existing architecture with data and reasoning push back when it’s the right call, and drive adoption of better approaches.

Requirements 

•  7–12 years of experience in backend or platform engineering 
•  Strong computer science fundamentals (preferably from IIT, BITS, NITs) 
•  Strong proficiency in backend development (Node.js, Java, Go, or equivalent) 
•  Proven experience scaling systems through high-growth startup phases (1→10 or beyond) 
•  Track record of building and owning critical platforms or systems from scratch 
•  Exposure to high-volume transactional systems; fintech or lending is a strong plus 
•  Bias for action - moves fast, makes sound decisions, owns outcomes end-to-end 
•  Comfortable navigating ambiguity and evolving priorities in a startup environment 
•  Strong problem-solving skills ability to break down complex technical challenges and arrive at pragmatic, well-reasoned solutions 
•  Hands-on experience with platform engineering developer tooling, shared services, infrastructure abstractions, or internal platforms 

About Us:

Tradelab Technologies Pvt Ltd is not for those seeking comfort—we are for those hungry to make a mark in the trading and fintech industry. If you are looking for just another backend role, this isn’t it. We want risk-takers, relentless learners, and those who find joy in pushing their limits

every day. If you thrive in high-stakes environments and have a deep passion for performance driven backend systems, we want you.

What We Expect:

• You should already be exceptional at Golang. If you need hand-holding, this isn’t the place for you.

• You thrive on challenges, not on perks or financial rewards.

• You measure success by your own growth, not external validation.

• Taking calculated risks excites you—you’re here to build, break, and learn.

• You don’t clock in for a paycheck; you clock in to outperform yourself in a high-frequency trading

environment.

• You understand the stakes—milliseconds can make or break trades, and precision is everything.

What You Will Do:

• Develop and optimize high-performance backend systems in Golang for trading platforms and financial

services.

• Architect low-latency, high-throughput microservices that push the boundaries of speed and efficiency.

• Build event-driven, fault-tolerant systems that can handle massive real-time data streams.

• Own your work—no babysitting, no micromanagement.

• Work alongside equally driven engineers who expect nothing less than brilliance.

• Learn faster than you ever thought possible.

Must-Have Skills:

• Proven expertise in Golang (if you need to prove yourself, this isn’t the role for you).

• Deep understanding of concurrency, memory management, and system design.

• Experience with Trading, market data processing, or low-latency systems.

• Strong knowledge of distributed systems, message queues (Kafka, RabbitMQ), and real-time processing.

• Hands-on with Docker, Kubernetes, and CI/CD pipelines.

• A portfolio of work that speaks louder than a resume.

Nice-to-Have Skills:

• Past experience in fintech.

• Contributions to open-source Golang projects.

• A history of building something impactful from scratch.

• Understanding of FIX protocol, WebSockets, and streaming APIs.

We are seeking a highly skilled Backend Developer to join our team and contribute to the development and improvement of both our customer-centric SaaS platform and internal systems.

As a Backend Developer, you will be responsible for designing, implementing, and maintaining the server-side logic of our application, ensuring high performance, scalability, and security.

Responsibilities:

• Collaborate with cross-functional teams, including front-end developers, product managers, and designers, to understand project requirements and translate them into technical specifications.

• Design and develop server-side logic, APIs, and database schema to support the functionality and performance requirements of our SaaS platform.

• Write clean, modular, and well-documented code using any relevant programming language preferably Java with SpringBoot.

• Optimize the backend systems for maximum speed and scalability, ensuring high performance and responsiveness of the application.

• Implement data storage solutions using PostgreSQL or other relational databases, ensuring data integrity and security.

• Conduct thorough testing and debugging to identify and resolve any issues or bugs in the backend code.

• Stay up-to-date with emerging technologies, industry trends, and best practices in backend development and contribute to the continuous improvement of our development processes.

Requirements:

• Proven work experience as a Backend Developer or similar role, with a focus on server-side development.

• Proficiency in working with relational databases, particularly PostgreSQL, and writing efficient SQL queries.

• Familiarity with SaaS concepts and architecture.

• Experience with API design and development, including RESTful APIs. • Solid understanding of software development principles, including object-oriented programming, design patterns, and data structures.

• Experience with version control systems, such as Git.

• Strong problem-solving and analytical skills, with keen attention to detail. • Excellent communication and teamwork skills, with the ability to collaborate effectively with cross-functional teams.

• Bachelor's degree in Computer Science, Engineering, or a related field is preferred, but not mandatory.

As a Backend Developer with expertise in Java, and PostgreSQL, you will play a critical role in developing and maintaining the backend infrastructure of our SaaS and internal platforms, ensuring its reliability, scalability, and performance. Join our team and be a part of building cutting-edge software solutions that empower our customers and drive business growth. 

We are looking for a Node.js Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition, and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is necessary as well.

Location Preferences

• Candidates located in Kerala are preferred.

Skills and Qualifications

• Strong proficiency with JavaScript, React, and Redux

• Knowledge of Node.js and frameworks available for it(particularly Express,Loopback)

• Understanding the nature of asynchronous programming and its quirks and workarounds

• Good understanding of server-side templating languages

• Good understanding of server-side CSS preprocessors

• Basic understanding of front-end technologies, such as HTML5, and CSS3

• User authentication and authorization between multiple systems, servers, and environments

• Integration of multiple data sources and databases into one system

• Understanding Cloud based application deployment.

• Understanding fundamental design principles behind a scalable application

• Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform

• Creating database schemas that represent and support business processes

• Implementing automated testing platforms and unit tests

• Proficient understanding of code versioning tools, such as Git

Hi

About the company:

Our Client is a brand co-creation platform that transforms powerful ideas into authentic, profitable, andexperience-led brands that can define the future of brands in key consumption categories like fashion and lifestyle; food and FMCG, home and decor and beauty and wellness. We are a team of experienced entrepreneurs, marquee investors, and industry professionals who have expertise and experience in building some of the most popular brands in the country. We partner with passionate entrepreneurs to combine our collective learning and experience with data science, digital ethnography, and technology platforms to build brands that connect to the new generation of Indian consumers

Job Location: Mumbai

What you’ll be doing?

• Fluent in Backend web application development (Node.JS, PHP with good knowledge of Magento).

• Fluent in Database (MySQL, NoSQL, MongoDB) design and management.

• Substantial experience with high throughput web services.

• Experience in using cloud platforms like Amazon.

• Knowledge of Frameworks like Express, Koa, Zend, etc.

• Basic Understanding of Front End development (JavaScript, CSS, Ajax, React.JS, Boot Strap, HTML 5)

• Fluent in various automation testing, performance testing, and deployment tools.

• Decent Understanding of Working on Agile Software Development Methodology

What you’ll bring?

• We are looking for an experienced Back End developer to be part of a diverse, fast pace and energetic team.

• The candidate will be expected to design a scalable client-server framework, build database-intensive reporting modules, scalability and reliability of existing applications and services, and provide troubleshooting and 2nd-tier support for existing applications.

• The candidate should be a self-starter, who is proactive, positive, flexible, and a good team player.

• Minimum qualifications: B.Tech./B.E. in CS, IT, or ECE from a reputed college. 1-3 years of experience in Backend software development.

Why work with us

• You will be part of our founding team and get your hands dirty in the 0-1 stage of building a D2C brand.

• You will work with a solid set of people from diverse backgrounds.

• You will independently lead projects and have ownership of your deliverables.

• You will be pushed out of your comfort zone and watch your learning curve spike.

Regards

Team Merito

Senior Software Engineer, Java/Python (Bangalore, Remote option available)

4+ years of experience 

Zepto 

Why should you look at this role?

Salary 40-55 lakh per annum

Paid leave

Sick leave

Provident Fund

What Else?

• High growth startup in quick commerce space (10 min delivery)
• Given our very high hiring bar, we offer a very competitive salary and substantial equity to create everlasting wealth for our early believers as the company grows.
• Work on real world logistics problems & benefit from the rocket ship Zepto is!

Tech Team: 40-50 (200+ in few months)

About the Employer

Zepto is a fast-growing startup that delivers products in 10 minutes through an optimised network of dark stores that we're building across the country!

Just 6 months after launching, we've raised $160 million from marquee

investors in Silicon Valley and India. Our investors include Y Combinator, Nexus Venture Partners, and many more! We’ve built out one of the best startup teams in India, with Senior Executives from Uber, Flipkart, Dream11, PhonePe, Goldman Sachs, Pepperfry, and institutions like Stanford, INSEAD, IITs, and IIMs.

The magic of Zepto is our ability to consistently deliver 2,500+ products in 10 minutes flat. It's the core of what we do, and the reason why we’ve been able to grow so fast with phenomenal customer love. Our mission is simple: to make 10-minute delivery the new normal.

Funding:

Funding Zepto has raised a total of $160M in funding over 3 rounds.

Their latest funding was raised on Dec 20, 2021 from a Series C round.

Employer Reviews:

“High Ownership, Lots of Learning, Broad Roles, Accessible Leaders”

"Alot of benefits like ZeptoJoy coupon, internet bill reimbursement and cab reimbursement is also taken care of. Overtime is paid."

Reporting structure:

Software Engineer -> Sr Software Engineer -> Lead -> EM -> AD / Director / VP -> Head of Engineering -> CTO

This role would be by and large a Individual Contributor role.

Interview Process:

• Round 1. Problem Solving + CS Fundamentals (60 mins)
  • DS/Algo Problems (30 mins) - You can expect 1-2 Leetcode easy/medium questions
  • CS Fundamentals (30 mins)
• Round 2. Low Level Design (60 mins)
  • You would be given a trivial problem and expected to work through the low level design viz class structure, interfaces, db data models etc.
• Round 3. High Level Design (60 mins)
  • You will be given a trivial problem, where we would work with you to design the system for the problem statement. We expect the detailed flow of the Functionality
    • Extract APIs, if any
    • Database choices
    • Schema design and Scale the system, if time permits

What You will do Everyday?

• Work very closely with the Tech Leadership and lead end-to-end development.
• Closely collaborate with product, design and business teams to understand product ideas and business needs and help deliver these as a series of ultra fast experiments.
• Architect and implement backend services with high reliability and scalability.
• Contribute to system architecture and database design.
• Set up best practices for development and champion their adoption.
• Write quality documentation and handle conflicts well to build consensus.
• Learn about new technologies and incorporate them.
• Mentor young minds and foster team spirit

Your Superpowers

• 4+ years of experience with Java frameworks like Spring / Dropwizard/Play or Python frameworks like Django/Flask/FastApi and databases like PostgreSQL/MySQL/MongoDB
• Experience in building highly scalable customer-facing applications that involve implementing complex business flows and dealing with an ever-increasing scale
• Extensive experience in object-oriented design skills, knowledge of design patterns, and huge passion and ability to design intuitive module and class-level interfaces.
• Experience in service-oriented architecture design.
• Experience building at least one application from scratch.
• Experience with cache store/message broker like Redis / RabbitMQ/Kafka
• Interest in learning new languages/framework as needed.
• Worked in a startup environment with high levels of ownership and commitment.
• A growth mindset and passionate about building things from the ground up and most importantly, you should be fun to work with.

• The Architect/ Lead Backend Engineer will handle the digital experience from inception to go-live model.
• The role holder is expected to create a vision and roadmap for the digital experience to provide best in class customer experience for each of the product solutions handled.  The role holder will play a critical role in leading the innovation and growth of our front end web and mobile platforms.
• Must be from Good Companies and have been working on high Scale of Traffic
• Proficiency in engineering practices and writing high quality code, with expertise in either one of Java or Groovy or Go.
• 3+ years of experience building microservices.
• Strong experience in architecting and building distributed systems, scalability, and availability
• Strong knowledge of data structures, algorithms, and designing for performance
• Strong knowledge of cloud technologies like AWS/Google Cloud/Azure
• Good understanding of RxJava or Actors framework
• Proficient with RDBMS
• Strong knowledge on data stores, database design, data modelling and SQL queries
• Extensive experience building and owning large- scale distributed backend systems
• Experience working with three or more of : Unix/Linux environments, Distributed and parallel systems, Workflow automation, CI/CD Platform development, Cloud platforms development e.g. AWS/GCP, Kubernetes/Container platforms based development 

 Job Description:                                           

• 4+ years Rails experience in a production environment working complex Ruby on Rails applications and Ruby gems
• Proficient understanding of code versioning tools
• Knack for writing clean, readable Ruby code
• Knowledge on HTTP and RESTFUL API development experience
• Experience in Angular is a plus
• Proactiveness, good communication and fast learning.