Backend Developer

Role Overview

We are seeking a skilled Backend Developer with proven experience in Node.js, modern frameworks and GraphQL. The ideal candidate will excel in building robust, scalable APIs and integrating diverse databases, while collaborating within a fast-paced, cross functional team.

Key Responsibilities

• Design, develop and maintain server-side applications using Node.js, NestJS and ExpressJS frameworks.

• Build, optimize and maintain GraphQL APIs, including schema design, query and mutation implementation and resolver logic.

• Integrate and manage SQL (MySQL) and NoSQL (MongoDB, DynamoDB) databases.

• Write clean, maintainable and eSicient code following best practices and coding standards.

• Develop and execute unit tests; participate in code reviews to ensure code quality.

• Collaborate with frontend developers and other stakeholders to define, design and ship new features.

• Utilize Git workflows for version control, branching, merging and code deployment.

• Document technical specifications and architectural decisions.

• Stay up to date with backend and API technologies, including emerging GraphQL tools and best practices.

Required Skills & Qualifications

• 2-6 years of proven experience in backend development using Node.js

• Hands-on experience with NestJS and ExpressJS frameworks.

• Strong proficiency in building and maintaining GraphQL APIs, including schema definition, query optimization and resolver implementation.

• Solid understanding of SQL (MySQL) and NoSQL (MongoDB, DynamoDB) databases.

• Proficiency in JavaScript (and/or TypeScript).

• Experience with Git and collaborative development workflows.

• Proficiency in writing unit tests and using testing frameworks (e.g., Jest, Mocha).

• Understanding of RESTful and GraphQL API design and integration.

• Familiarity with security best practices in backend and API development.

• Excellent problem-solving and teamwork skills.

Preferred Qualifications

• Experience with GraphQL server frameworks and tools (e.g., Apollo Server, Prisma).

• Familiarity with GraphQL clients (Apollo Client, Relay) and frontend integration.

• Experience with containerization (Docker, Kubernetes).

• Knowledge of CI/CD pipelines, AWS Lambda functions, AWS Cloudwatch, AWS S3 and DevOps practices.

• Experience with cloud platforms (AWS, Azure, GCP).

• Exposure to microservices architecture and Agile/Scrum methodologies.

🧾 PDF Generation Developer

Full-time / Remote

We're looking for a junior or entry-level developer to join our team full-time and help us build and generate PDF documents quickly and efficiently using PDFmake.

This is a focused, straightforward role that involves converting structured data into clean, formatted PDF reports — such as financial summaries, client forms, or templated documentation.

While the work is a bit repetitive and requires attention to detail, it's an ideal position for someone who enjoys consistency, works well independently, and wants to gain real-world development experience in a production environment.

Experience with generating PDFs is not required — it's a simple, and you’ll quickly learn everything you need while working with us.

✅ What You'll Be Doing

• Use PDFmake to build and generate PDF documents from JSON or templated data
• Write clean and reusable code for repeated document structures
• Make small adjustments and fixes to existing PDF templates
• Occasionally assist with basic front-end (React) or back-end (NestJS) tasks — very minimal

🛠 Basic Requirements

• Solid knowledge of JavaScript or TypeScript
• Some hands-on experience with PDFmake or similar libraries (please share examples if available)
• Basic understanding of React and NestJS (enough to navigate and make small changes)
• Able to write clean, maintainable code with minimal supervision
• Good understanding of layout/positioning concepts (coordinates, grids, etc.)

🤝 Soft Skills We're Looking For

• Reliable, consistent, and self-motivated — you enjoy completing tasks without much variation
• Good communication in English (written and verbal)
• Organized and responsive — this role requires clear updates and attention to formatting details
• Open to feedback and iterative improvement

💼 What We Offer

• A stable, remote full-time role with consistent tasks
• Opportunity to improve and learn through production code
• Supportive and flexible team culture
• Note: This is a low-complexity role with a modest salary, ideal for someone early in their career or looking for focused, stable work.

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

• 5-8 years of experience as a Java/J2EE developer.
• 1-3 years of experience with Angular / React is desirable.
• 1-3 years of experience in using Spring and Spring Boot frameworks.
• Thorough knowledge of server-side development.
• Proven experience as a Full Stack Developer or similar role.
• Good understanding of web services (WSDL SOAP, RESTful).
• Hands-on experience in using Application Servers like WebSphere.
• Expertise in relational databases (Oracle, SQL Server).
• E-commerce domain knowledge is desirable.
• Prior experience in developing desktop and mobile applications.
• Familiarity with common stacks.
• Knowledge of multiple frontend languages and libraries, like HTML/ CSS, JavaScript, XML, jQuery.
• Experience in implementation of Microservices
• Experience with AWS (S3, SQS, SNS, ECS, EC2, ALB, API Gateway, Lambda, etc.) is highly desirable
• Good understanding of Docker & Kubernetes is highly desired.
• Familiarity with databases (MySQL, MongoDB, PostgresSQL), web servers (Apache), and UI/UX designs.

• Architect new and optimize existing software codebases and systems used to crawl, launch, run, and monitor the Anakin family of app crawlers
• Deeply own the lifecycle of software, including rolling out to operations, managing configurations, maintaining and upgrading, and supporting end-users
• Configure and optimize the automated testing and deployment systems used to maintain over 1000+ crawlers across the company
• Analyze data and bugs that require in-depth investigations
• Interface directly with external customers including managing relationships and steering requirements

• Extremely effective, self-driven builder
• 2+ years of experience as a backend software engineer
• 2+ years of experience with Python
• 2+ years of experience with AWS services such as EC2, S3, Lambda, etc.
• Should have managed a team of software engineers
• Deep experience with network debugging across all OSI layers (Wireshark)
• Knowledge of networks or/and cybersecurity

• Broad understanding of the landscape of software engineering design patterns and principles
• Ability to work quickly and accurately in a highly stressful environment during removing bugs in run-time within minutes
• Excellent communicator, both written and verbal

• Must be available to work extended hours and weekends when needed to meet critical deadlines
• Must have an aversion to politics and BS. Should let his/her work speak for him/her.
• Must be comfortable with uncertainty. In almost all the cases, your job will be to figure it out.
• Must not be bounded to comfort zone. Often, you will need to challenge yourself to go above and beyond.

About Us

Instavans is a Logistics tech startup focused on the development of SaaS products for the Road Trucking industry. Instavans has built and rolled out SmarTruck™, a SaaS based TMS with a private marketplace. SmarTruck has customers in India & the MENA region and is poised to enter Latam and Sub-saharan Africa.

The company’s innovative go-to-market plan involves working with large Shippers and 4PLs (Fourth Party Logistics Service Providers) to synergistically bring their Carriers on board.

We are looking for people to help us supercharge our growth, while we continue to embody the values that have got us so far already. As we are a rapidly growing company you will gain exposure to all areas of the platform, understanding the key success drivers at an engineering team and gaining invaluable experience for your future career. Success in this role will lead to opportunities for growth across the entire engineering team with significant scope for future development.

We have openings in Frontend (Angular 8+), Backend(Node.js), Android (Kotlin) and QA (Automation)

Desired Candidate Profile

• Min 5 years of software development experience, with a Bachelor's degree in Computer Science or related field.
• Proficiency in a Go programming language
• Strong software development fundamentals (Data structures,  Algorithms, problem-solving,  OO  design,  systems architecture,  and development methods).
• Excellent verbal and written communication skills, and interpersonal skills. Self-motivated attitude with the ability to multitask, learn and thrive in a timeline-driven environment
• Good understanding of memory/SQL/NoSQL database concepts (key-value, schemas, indexing, etc)
• Writing scalable, robust, testable, efficient, and easily maintainable code
• Translating software requirements into stable, working, high-performance software
• Playing a key role in architectural and design decisions, building toward an efficient microservice distributed architecture

Skills

• Strong knowledge of Go programming language, paradigms, constructs, and idioms
• Knowledge of common Goroutine and channel patterns
• Experience with the full site of Go frameworks and tools, including:
• Dependency management tools such as Godep, Sltr, etc.