Python Developer

Software Engineer (Backend) – Kotlin & React

About Us

We are a high-agency startup building elegant technological solutions to real-world problems.

Our mission is to build world-class systems from scratch that are lean, fast, and intelligent. We are currently operating in stealth mode, developing deeply technical products involving Kotlin, React, Azure, AWS, GCP, Google Maps integrations, and algorithmically intensive backends.

We are building a team of builders — not ticket takers. If you want to design systems, make real decisions, and own your work end-to-end, this is the place for you.

Role Overview

As a Software Engineer, you will take full ownership of building and scaling critical product systems. You will work directly with the founding team to transform complex real-world problems into scalable technical solutions.

This role is ideal for engineers who enjoy thinking deeply about systems, writing clean code, and building products from 0 → 1.

Key Responsibilities

System Development & Architecture

• Design, develop, and maintain scalable backend services, primarily using Kotlin or JVM-based languages (Java/Scala).
• Architect systems that are robust, high-performance, and production-ready.
• Apply strong data structures, algorithms, and system design principles to solve complex engineering challenges.

Full Stack Development

• Build fast, maintainable front-end applications using React.
• Ensure seamless integration between frontend systems and backend services.

Cloud Infrastructure

• Design and manage cloud architecture using AWS, Azure, and/or Google Cloud Platform (GCP).
• Implement scalable deployment pipelines, monitoring, and infrastructure optimization.

Product & Technical Collaboration

• Work closely with founders and product stakeholders to translate business problems into technical solutions.
• Contribute actively to product and engineering roadmap decisions.

Performance Optimization

• Continuously improve system performance, scalability, and reliability.
• Implement efficient algorithms and system optimizations to gain a technical advantage.

Engineering Excellence

• Write clean, well-tested, and maintainable code.
• Maintain strong engineering standards across the codebase.

Required Skills & Qualifications

We value capability and ownership over years of experience. Whether you have 10 years of experience or none, what matters is your ability to build and solve hard problems.

Core Requirements

• Strong computer science fundamentals (Data Structures, Algorithms, System Design).
• Experience with Kotlin or JVM languages such as Java or Scala.
• Experience building modern React applications.
• Hands-on experience with cloud platforms (AWS / Azure / GCP).
• Experience designing and deploying scalable distributed systems.
• Strong problem-solving and analytical thinking.

Preferred / Bonus Skills

• Experience with Google Maps APIs or geospatial integrations.
• Prior startup experience.
• Contributions to open-source projects.
• Personal side projects demonstrating strong engineering ability.

Ideal Candidate

You will thrive in this role if you:

• Take ownership of problems, not just tasks.
• Are comfortable working in high-ambiguity environments.
• Have a builder mindset and enjoy creating systems from scratch.
• Learn quickly and execute with speed and precision.

This Role May Not Be For You If

• You prefer strict task assignments and detailed specifications before starting work.
• You want to focus only on coding tickets without product involvement.
• You prefer large teams with multiple layers of management.

Why Join Us

• Build 0 → 1 products with massive ownership.
• Work in a flat organization with no unnecessary hierarchy.
• Collaborate directly with founders and core product builders.
• Your contributions will have immediate and visible impact.
• Flexible remote work environment.
• Opportunity to shape the technology, culture, and future of the company.

If you are passionate about building powerful systems, solving complex problems, and owning your work, we would love to hear from you.

https://loopx.redstring.co.in/form/69e4c676e8ea0f6af4ed066e

• Software Engineering
  • Design and develop highly scalable, available, reliable, secure and fault tolerant systems with minimal guidance for a market leader in the logistics industry
  • Partner with team members on functional and nonfunctional requirements and spread design philosophy, goals and improve the code quality across the team
  • Research new technologies and tools that enable building the next generation of our services
  • Provide technology leadership to the team and foster engineering excellence
• Product Delivery
  • Partner with product managers to define and execute on the feature roadmap
  • Translate business requirements into scalable and extensible design
  • Coordinate with various cross functional teams on planning and execution
  • Maintaining automated build / test / deployment environments

• Software Engineering
  • Should have at least 3 years of hands-on experience in designing, developing, testing and deploying applications on Java, Ruby, Kotlin, Python, Node or Go for large scale applications
  • Deep knowledge of one of the programming languages they have experience in
  • Proficient in OOP and Design Patterns, experience with functional programming would be a plus
  • Data modelling experience in Relational Databases
  • Ability to design and implement low latency RESTful services
• Product Delivery
  • Ability to scope, review and refine user stories for technical completeness and to alleviate dependency
  • Well versed in working with agile methodologies which includes phases such as design, development, code review, testing and release management
  • Ability to have worked in a CI/CD environment, with hands on experience with Git or any similar source code management tools
• Product Maintenance

• Experience troubleshooting server performance issues such as memory tuning, GC tuning, resource leaks
• Continuously refactor applications to ensure high quality design

• 3+  years of hands-on experience in ERPNext Platform and Frappe Framework, Python, JavaScript and MySQL/MariaDB
• Strong knowledge of configuration and customisation of the ERPNext platform

Fulfil’s software engineers develop the next-generation technologies that change how millions of customer orders are fulfilled by merchants. Our products need to handle information at massive scale. We're looking for engineers who bring fresh ideas from all areas into our technology.

As a senior software engineer, you will work on our python based ORM and applications that scales to handle millions of transactions every hour. This is mission critical software and your primary focus will be building robust and scalable solutions that are easy to maintain.

In this role, you will be collaborating closely with the rest of the team working on different layers of infrastructure in an international environment. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product are important.

What You’ll Do:

• Own definition and implementation of API interfaces (REST and GraphQL). We take pride in our 100% open API with over 600 endpoints.
• Implement simple solutions to complex business logic that enables our merchants to manage financials, orders and shipments across millions of transactions.
• Build reusable components and packages for future use.
• Translate specs and user stories into reviewable, test covered patches.
• Peer review code and refactor existing code.
• Integrate with our eCommerce partners (Shopify, BigCommerce, Amazon), shipping partners (UPS, USPS, FedEx, DHL) and EDI.
• Manage Kubernetes and Docker based global deployment of our infrastructure.

Requirements We’re Looking for Someone With:

• Experience working with ORMs like SQLAlchemy or Django (2-3 years)
• Experience with SQL and databases (Postgres preferred)
• Experience in developing large server side applications and microservices
• Ability to create high quality code
• Experience with python testing tools (pytest) and test automation
• Familiarity with code versioning tools like GIT
• Strong sense of ownership and leadership quality
• Experienced in the tools of our web stack- Python, Celery, Postgres, Redis, RabbitMQ

Nice to Haves:

• Prior experience at a growth stage Internet/Software company
• Experience with ReactJS, Google Cloud, Heroku
• Cloud deployment and scaling experience