GoLang Developer

Why this role exists:

You’ll own our data pipelines—ingesting, cleaning, and serving fashion/e-commerce data at scale—so the team (and founder) can focus on building new capabilities. If you love end-to-end ownership and turning messy web data into reliable, queryable systems, this role is your playground.

What you’ll do:

• Ingestion at scale: Design, build, and operate resilient crawlers/scrapers with rotation, rate-limits, backoff, and change-tolerance.
• Robust pipelines: Normalization, deduping, schema evolution, enrichment, and SLAs for freshness & completeness.
• Data stores & caching: Model products/variants/attributes in PostgreSQL, manage Redis for caching/queues, and keep costs predictable.
• Observability & quality: Instrument with metrics/tracing, add data QA checks, alerts, and auto-healing where sensible.
• Performance & reliability: Optimize throughput, memory, I/O, and infra spend; design for retries, idempotency, and correct delivery semantics.
• Collaboration: Partner with search/ML/product teams; write crisp docs; raise the bar in reviews; mentor where helpful.

Must-haves:

• Super high ownership: End-to-end closure on tasks you lead.
• 3.5+ years building backend systems, preferably in Python with production ownership.
• Strong data pipeline experience (batch/stream): schema design, deduplication, and backfills.
• Hands-on with PostgreSQL/MySQL and Redis (caching, rate-limits, queues).
• Real-world web scraping: requests/httpx/aiohttp, BeautifulSoup/lxml/Scrapy/Playwright, anti-bot tactics, respectful crawling.
• Concurrency & async (asyncio, multiprocessing), robust error handling, idempotent jobs.
• Solid testing habits and bias for simple, maintainable code.

Nice-to-haves:

• Message queues/streams: Kafka, RabbitMQ, SQS.
• Workflow schedulers: Airflow, Prefect.
• GraphQL; search tech (Elasticsearch/OpenSearch).
• Cost/perf tuning, on-call pragmatism, or prior startup/founding team experience.

How we work:

• High ownership, fast shipping, clear interfaces, strong documentation.
• We optimize for time to go live—startups that succeed outpace those that don’t.
• Competitive salary + meaningful ESOPs.
• (Optional) Work from our hacker-house on MG Road, Gurgaon.

Hiring process (fast closures)

1. 30-min technical deep-dive
2. Take-home (optional)
3. Founder conversation & references

Who You Are:

• You’ve built scalable, production-ready APIs in fast-paced environments, and are comfortable with the challenges that come with a growing startup.
• You understand event-driven architectures and have hands-on experience building real-time applications.
• You are fully capable of taking ownership of backend systems, from designing the database schema to writing efficient, maintainable code.
• You think beyond the code: optimizing performance, scalability, and security are as important as building new features.
• You’re comfortable troubleshooting complex issues, whether that’s API bottlenecks, database performance, or production issues.

Responsibilities:

• Design, implement, and manage a NestJS backend with a modular, scalable architecture that can easily handle real-time events and communication.
• Develop and maintain WebSocket services for real-time event-driven updates and ensure seamless communication across the system.
• Integrate RabbitMQ for reliable internal messaging, handling queues and ensuring event-driven workflows are efficient and fault-tolerant.
• Implement database management strategies using MongoDB, Redis, and Elasticsearch, ensuring efficient data handling, indexing, and optimization.
• Integrate with external APIs (JSON-RPC, XML-RPC, REST) to enhance system capabilities.
• Ensure high performance of the system by optimizing database queries, implementing caching strategies using Redis, and ensuring optimal indexing and data flow.
• Implement role-based authentication and authorization mechanisms using JWT, OAuth, and RBAC patterns within NestJS.
• Follow security best practices to ensure sensitive data is protected, credentials are stored securely, and the system is resilient to common vulnerabilities.
• Work collaboratively with cross-functional teams to ensure seamless integration between different services and technologies.

Must-Have Skills:

• Strong proficiency in Node.js and NestJS with TypeScript.
• Solid experience with MongoDB, Redis, and Elasticsearch for data storage and real-time data handling.
• In-depth knowledge of WebSockets and Socket.IO in NestJS Gateways, enabling real-time communication and updates.
• Experience with RabbitMQ for message queuing and asynchronous task handling.
• Strong understanding of authentication & authorization systems using JWT, OAuth, and RBAC (Role-Based Access Control).
• Expertise in optimizing APIs, including techniques for caching, improving database performance, and reducing latency.
• Familiar with API security best practices, including secure storage of credentials, encryption, and safeguarding sensitive data.

Key Skills:

• TypeScript, NestJS, WebSockets, Socket.io
• Redis, MongoDB, Elasticsearch, RabbitMQ
• API Optimization, JWT, OAuth, RBAC
• Real-time communication, Event-driven architecture

• 4+ years exp with solid backend/engineering experience.
• Knowledge of data structures and an eye for architecture.
• Solid CS fundamentals, fluent in multi-threaded and asynchronous programming, a strong inclination for architecting at scale.
• Excellent technical design, problem-solving, debugging, and communication skills.
• Rapid prototyping worked on distributed systems at scale.
• Basic knowledge of SQL as well as NoSQL databases.
• Proficient in Golang, it's design, and concurrency patterns.

Skills:

·      Strong knowledge of the Go programming language, including its paradigms, constructs, and idioms.

·      Familiarity with common Goroutine and channel patterns.

·      Experience with a wide range of Go frameworks and tools, including:

·      Knowledge of dependency management tools such as Godep, Sltr, etc., is a plus.

·      Familiarity with Go's templating language.

·      Experience with Go's code generation tools, such as Stringer, is beneficial.

·      Understanding of popular Go web frameworks like Gin.

·      Familiarity with router packages like Gorilla Mux is advantageous.

http://getsimpl.com/">Simpl partners with popular online brands and offers their customers the ability to make purchases without paying for them at that very moment.

Over the years, additionally, it has also developed a range of offerings including a one-time checkout feature; Bill Box, which allows customers to automate their recurring expense payouts, and splitting a bill in three parts, to build a “full-stack solution,” said Nitya Sharma, co-founder and chief executive of Simpl, in an interview with TechCrunch.

Some of Simpl’s partners include telecom network Jio Platforms, food delivery service Zomato, pharmacy 1MG, grocer BigBasket and ticketing platform MakeMyTrip.

Know More About Simpl

[ https://techcrunch.com/2021/11/30/india-fintech-simpl-raises-40-million">https://techcrunch.com/2021/11/30/india-fintech-simpl-raises-40-million ]

[ https://getsimpl.com/about-us/">https://getsimpl.com/about-us/ ]

Java 1.8 or later/Golang/Ruby on Rails,
Spring, Spring Boot, Microservices, SQL / NoSLQ , REST APIs , Redis , Kafka, Rabbit MQ, Docker, AWS

B2B / B2C / Cloud (AWS/ GCP) / SAAS Products ,  Software Best Practices , REST / GRPC , Domain Driven Design, Event and Message Driven Systems , Data Structures , Algorithms, OOPS, System Design, JUnit, Mockito, Fitnesse, Cucumber, HTML/ CSS / Javascript, Git , Bitbucket, Maven, Asynchronous / Functional / Reactive Programming in Java

• An Engineering Degree - B.E/B.Tech/MS/PhD in any stream – Computer Science preferred.
• 7-12 years of relevant experience in building highly resilient, highly scalable systems
• Understand the product management space with Agile methodologies.
• Demonstrated end-to-end ownership for development and design of least one cloud-based product - Experience in building microservices / platforms is desirable.
• Strong desire to drive change, and ability to adapt to change quickly. Proficient in new and emerging technologies.
• Ability to balance the long-term “big picture” and short-term implications of design decisions.
• Exceptional communication and interpersonal skills - including negotiation, facilitation, and consensus building skills; ability to influence and persuade, without direct control.
• Mentoring / coaching Junior and Senior Engineers.
• Focus on reusability, frameworks, patterns and configuration tools for faster development.
• Excellent in Engineering excellence – code quality, performance tuning / chaos engineering, operational excellence etc.
• DevOps and TechFinOps mindset to problem solving and product development.

About Simpl 

The thrill of working at a start-up that is starting to scale massively is something else. Simpl (FinTech startup of the year - 2020) was formed in 2015 by Nitya Sharma, an investment banker from Wall Street and Chaitra Chidanand, a tech executive from the Valley, when they teamed up with a very clear mission - to make money simple, so that people can live well and do amazing things. Simpl is the payment platform for the mobile-first world, and we’re backed by some of the best names in fintech globally (folks who have invested in Visa, Square and Transferwise), and has Joe Saunders, Ex Chairman and CEO of Visa as a board member.

Everyone at Simpl is an internal entrepreneur who is given a lot of bandwidth and resources to create the next breakthrough towards the long term vision of “making money Simpl”. Our first product is a payment platform that lets people buy instantly, anywhere online, and pay later. In the background, Simpl uses big data for credit underwriting, risk and fraud modelling, all without any paperwork, and enables Banks and Non-Bank Financial Companies to access a whole new consumer market.

In place of traditional forms of identification and authentication, Simpl integrates deeply into merchant apps via SDKs and APIs. This allows for more sophisticated forms of authentication that take full advantage of smartphone data and processing power.

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We’re looking for polyglot developers who love to code. You should have >3 years of experience building high-quality products. You should have the ability to write clean code and must’ve worked on one of Ruby, NodeJS, Golang or Python

Responsibilities

1. Develop new features - build POCs, get feedback, and scale is our default mode
2. Building reusable and platform specific components
3. Translating designs and wireframes into high-quality code
4. Optimizing services for maximum performance
5. Ensure faster release cycles by managing distribution over the cloud 

Requirements

1. Hands-on experience in all aspects of software development - analysis, coding, writing tests, deployment, the works.
2. Knowledge of relational databases, SQL, ACID and distributed locking
3. Solid OOPS understanding.
4. Good exposure to building distributed systems, micro-services architecture.
5. Continuous delivery experience
6. Exposure to building platforms (not just products) would be a plus

Job Description

• Develop p2p infrastructure systems to support blockchain interoperability
• Improve engineering standards, tooling, and processes
• Coding with concurrency, efficiency and scalability as primary motive
• Rigor on Unit testing, coverage and best practices
• Document systems, build runbooks, and automate those processes
• Being hands on by writing, testing, and deploying high-performance networking code.

Required qualifications

1+ years of experience in Golang, Strong knowledge of Go programming language, paradigms, constructs, and idioms, willingness to learn on the go, ability to write clean code, a strong sense of responsibility.

Tech Stack

Go, git, linux, bash, ability to work with Docker.

Nice to have

Experience developing in c++, cryptography and system software development experience,understanding of design patterns, understanding of operating systems, networks.