Hiring: Senior Backend / Full Stack Developer (Full-Time)

@kishanbwts

I see you need an experienced developer to take on your visa booking automation project, focusing on Node.js backend work and complex integrations. I’ve helped a client in travel tech automate booking workflows by building APIs with secure OTP and payment flows, improving reliability and scaling databases to handle growing traffic. To move your system forward smoothly, I’d like to know: How tightly coupled is your current codebase with third-party services, and are you using any event-driven architecture for webhooks? These details help me plan clean extensions without disrupting existing features. Given my hands-on background with similar automation projects and system scaling, this kind of backend enhancement and integration feels straightforward. I’m ready to dig into your codebase, quickly understand it, and start delivering solid, production-ready features. Let me know how you want to proceed, and I can jump in immediately.

@durgesh8527

With over 10 years of hands-on experience as a Full Stack Developer, I bring a unique perspective to your visa booking automation project. Having worked with some of the most sophisticated software systems in platforms and languages like Node.js, React, Vue.js, Python, among others, I have not only acquired advanced API integration and reverse engineering skills but also a deep understanding of database architecture and system scaling techniques that would be vital in this role. I'm pleased to say that my experience extends to complex automation systems and delivering production-ready code. In addition, I am well-versed with handling APIs & third-party service integrations like Twilio, Stripe and the likes-- an important requirement for your project. Swiftly understanding existing codebases and extending them independently has always been one of my key strengths. Turning these skills into successful projects require constant communication, clear code, and on-time delivery. My approach is centered around these values ensuring you will have a seamless collaboration. Let's connect today so that we can tailor-make a solution for your project needs.

@amjidalikhan

Dear Client, Thanks for considering my application for your project. I have reviewed your project, and it best matches with my expertise. With over 10 years of experience as a senior full stack web developer, I can confidently say that I can start IMMEDIATELY and complete the job efficiently and within a short timeframe. You can find more information about me at https://developer-amjid.web.app. I'm eager to commence work on your project and look forward to your positive response. Sincerely, Amjid

@santoshkumars17

With my extensive experience-both frontend and backend, I believe I am an ideal fit for your senior backend/full stack developer position. I have successfully built numerous complex automation systems, displaying my ability to understand and extend an existing codebase independently. Node.js is one of my strongest suits here with hands-on proficiency in API integration, Database architecture and system scaling which matches the core requirements of your role. Moreover, being a full-time individual developer without any involvement of agencies or companies ensures that all your project requirements and concerns are exclusively addressed by me – with no miscommunication or delays. I have handled diverse projects in my 5+ years career - from SaaS applications to e-commerce platforms - underlining my ability to deliver quality solutions across various domains. I'm also well-versed in using PHP frameworks like Laravel, which would supplement collaboratively if required. My track record prompts me to affirm that I possess clean, optimized & maintainable coding practices while ensuring an on-time delivery and clear communication throughout the project. Let's connect soon to discuss your needs more explicitly!

@nitishk277

I understand you're looking for a senior individual developer who can seamlessly step into an existing project, navigate a complex codebase with minimal guidance, and take ownership of backend development, integrations, authentication processes, and automation-related features while delivering reliable, production-ready solutions. This aligns closely with my experience as a Senior Full Stack Developer with 8+ years of experience in Node.js, React, API integrations, database design, and scalable backend systems. I have worked on platforms involving third-party API integrations, authentication systems, payment workflows, real-time processing, webhook handling, and business-critical automation logic. Recently, I contributed to a Trading & Portfolio Management Platform, a Construction Management SaaS, and a Real-Time Gaming Platform where reliability, performance, and maintainability were key requirements. A couple of questions: What is the current backend architecture and database stack? Are the visa provider integrations API-based, browser automation-based, or a combination of both? I am based in India, work as an individual developer, and am comfortable taking ownership of existing systems while contributing to their long-term growth and stability. My availability is 40 hr peer week. Looking forward to discussing the project.

@mahads31

As a highly skilled frontend/backend development specialist, I bring to the table a well-honed proficiency in API integration and reverse engineering, database architecture, system scaling, and most importantly Node.js development. I have also built and successfully integrated authentication systems, OTPs, webhooks, and payment workflows in my previous complex automation projects. My previous experience in visa booking automation resonates well with your requirement for a Senior Backend/Full Stack Developer for your ongoing project. Adapting to an existing codebase independently is a forte of mine, which means less time spent on training and more efficiency right off the bat. In my career spanning multiple industries and international clients - with India/Bangladesh/USA inclusive - I have always striven to create bespoke solutions that meet the clients' unique requirements. My work is characterized by practical innovation and scalability; qualities that will undoubtedly complement your project perfectly. Choosing me isn't just hiring a developer,it's getting a long-term technology partner who is committed to delivering real business value.

@jagratip3

Hi, I'm an individual full-stack developer from India with strong experience in Node.js, backend architecture, API integrations, authentication workflows, payment systems, webhooks, and database optimization. I have worked on complex automation platforms, integrating third-party services, handling OTP-based authentication flows, and scaling production applications. My approach is to first understand the existing codebase, identify bottlenecks, and deliver clean, maintainable solutions without disrupting current functionality. I am comfortable working independently, reverse-engineering APIs when required, debugging complex systems, and extending existing platforms efficiently. I am available full-time, communicate clearly, and focus on delivering reliable, production-ready results. I would be happy to discuss the project and demonstrate relevant experience. Best regards.

@rakhshanz3

With over two decades of experience in computer science and artificial intelligence under my belt, I am confident that I am the ideal candidate for your senior backend/full stack developer position. My expertise includes Backend Development, JavaScript, API Development, Node.js, and Web Development- covering everything you require and more for this position. In fact, I have recently been intensively focused on projects that align closely with your visa booking automation project. In my most recent role as a CTO in an AI startup, I built complex automation systems - including the type of API integrations and workflow processes you mentioned. My proficiency with large-scale software engineering allows me to easily understand and extend existing codebases independently, which would be an asset for your team. Furthermore, my understanding of databases and system scaling will ensure smooth, seamless operation as your project expands. In regards to the preferred location of our candidates, I am based in Bangladesh which makes me an excellent match for your team. My timezone proximity offers easy communication window times and my cost-effectiveness is surely something that you will appreciate. If you're looking to add an experienced professional who can truly take ownership of this project and deliver top-notch results; look no further. The ball is now in your court!

@Jaydeep365

Hi, I have 9+ years of experience in full-stack development with strong expertise in Node.js, MongoDB, MySQL, PostgreSQL, API integrations, authentication systems, payment workflows, webhooks, automation platforms, and scalable backend architecture. From your requirements, it looks like you need someone who can quickly understand an existing codebase, extend it independently, and handle complex backend workflows without constant guidance. This is exactly the type of work I have been doing for years. My relevant experience includes: *Node.js backend development and system architecture *Advanced REST API integrations and automation workflows *Authentication, OTP verification, JWT, session management *Payment gateway and webhook integrations *Database design, optimization, and scaling *Production deployment and maintenance *Working on large existing codebases and adding new features independently I am an individual developer based in India, not an agency. If you are still looking for the right developer, I would be happy to discuss your project and share relevant work that demonstrates my experience with backend systems, automation workflows, and API-heavy applications. Looking forward to hearing from you. Thanks.

@Nahuel6304

As a highly experienced Full Stack Developer, specializing in web development with advanced skills in JavaScript, PHP, MySQL, AngularJS, and React JS, I can assure you that I align perfectly with what you are looking for. I've spent the past five years mastering my craft and broadening my automation systems expertise which makes me well-versed in handling complex projects-from backend to database architecture. Furthermore, I am skilled in API integration and reverse engineering. This experience will be paramount to complementing your active visa booking automation project. My ability to understand and extend an existing codebase independently will help me integrate seamlessly into your team, removing any potential delays from the learning curve. Lastly, I understand you're only interested in hiring from India/Bangladesh/USA, and be assured that as part of my commitment to giving optimal results, where I hail from elicits nothing short of diligence and dedication towards my work. With your negotiable salary on offer and my proficiency fitting the role impeccably, it only makes sense to trust this crucial project to someone who has proven themselves time and again. Let's take this amazing journey together; I'm only a click away!

@abhishek060

Hi, I reviewed your requirements and understand that you're looking for an individual developer who can independently work on an active visa booking automation project, understand an existing codebase quickly, and build reliable production-ready solutions instead of requiring constant guidance. I can help with backend development involving API integrations, authentication and OTP workflows, webhook handling, payment flows, and scalable database architecture. I’m comfortable working with existing systems, analyzing current implementations, and extending functionality while keeping performance and stability in mind. I understand projects like this often involve multiple integrations, changing workflows, and maintaining existing functionality while adding new features, so I focus on clean implementation and maintainable code. A few quick questions: • Is the current system built completely in Node.js, or are there additional technologies involved? • Which APIs and payment systems are currently integrated? • Are you looking mainly for new features, optimization, or maintenance of the existing automation flow? I’d be happy to discuss the project further and understand how I can contribute.

@sgwtechnology

Hi, I’ve reviewed your requirement for a senior Node.js backend/full-stack developer and I’m interested in contributing to your visa booking automation system. I have strong experience building production-grade backend systems using Node.js, including API integrations, authentication flows (OTP/JWT), webhook-driven architectures, and payment processing systems. I’ve also worked on complex automation platforms where reliability, scalability, and clean integration with existing codebases are critical. ### Relevant experience includes: • Node.js backend architecture and REST API design • Third-party API integration and reverse engineering workflows • Secure authentication systems (OTP, session, token-based auth) • Database design (PostgreSQL/MySQL) with scalable structures • Debugging and extending existing production systems • Building automation-heavy backend logic with real-time events I am comfortable working inside existing codebases, quickly understanding architecture, and delivering maintainable, production-ready code without disrupting live systems. I focus on clean engineering, predictable deployments, and strong communication throughout development. I meet your location requirements and can commit full-time depending on alignment and long-term fit. I’d be happy to discuss the current system architecture and contribute immediately. Best regards, Mukesh

@serviceaxisgroup

Hi, I can help with making your visa booking automation production-ready by extending the existing Node backend through auth, OTP, webhooks, and the full payment workflow. I’d start by auditing the current codebase and mapping the exact API calls, OTP handling, webhook events, and payment state transitions. I’ll reduce risk with small incremental changes, thorough logging, and early end-to-end verification of each workflow step. Which visa booking provider are you integrating, and what webhook events do you receive today? Are payments handled via a specific gateway already in your stack? If you share the current flow details, we can align on scope and start fast.

@Visharaa2024

Hello, I am an individual full-stack developer with strong experience in Node.js backend development, complex API integrations, authentication systems, payment workflows, webhooks, and scalable database architecture. I have worked on automation-focused applications that require deep understanding of existing codebases, rapid problem-solving, and production-grade system development. I am comfortable analyzing and extending complex platforms, optimizing performance, and building reliable backend services that can scale with growing demand. My expertise includes REST APIs, microservices, MySQL, Redis, queue systems, OTP verification flows, payment gateway integrations, and cloud deployments. I can work independently, communicate clearly, and contribute immediately to an active project without extensive supervision. I understand the importance of writing maintainable, secure, and well-documented code while delivering features efficiently. I am interested in a long-term opportunity and would be happy to discuss your current architecture, technical challenges, and development roadmap. If selected, I can quickly review the existing codebase and begin contributing to the project with a focus on stability, scalability, and high-quality delivery. I look forward to speaking with you further.

@Branstrive

With a vast range of advanced backend development skills, I can confidently say that I am the best fit for your visa booking automation project. My experience in Node.js, API integration and reverse engineering has equipped me with the ability to work with complex systems and deliver production-ready work independently. Moreover, my expertise in authentication, OTPs, webhooks, payment workflows and database architecture will be invaluable to your project. Unlike many other developers, I truly understand the significance of strong backend and full stack development. A well-structured database architecture allows for smooth scaling up of a platform which is crucial for growth. Over the years, I have mastered this art and can assure you efficient scaling for your project. Looking forward to working with you and discussing your project further.

@shubhankar1967

Hi, I am an IITian with 10+ years of experience to develop similar projects ,I will reverse-engineer and integrate visa booking APIs using Node.js with Puppeteer for session handling and headless flows, Axios with custom interceptors for auth token rotation, and Redis for OTP/webhook state management. Backend built on Express with PostgreSQL for booking queues and user state, JWT-based auth, and Bull MQ for job scheduling and retry logic on failed booking attempts. Kindly click on the chat button so I can share you my relavant projects. Lets connect

@Huzaifa20002

I can start immediately, and projects like this succeed when the existing automation architecture, authentication flows, API dependencies, and scaling constraints are understood before adding new functionality. Hi, I can help extend and maintain your visa booking automation platform with a strong focus on backend reliability, API integrations, authentication workflows, and scalable system architecture. I'm comfortable working within an existing codebase, identifying bottlenecks, and implementing production-ready solutions without disrupting current operations. I have 7+ years of experience building complex automation systems, Node.js backends, API integrations, webhook-driven workflows, payment processing systems, and database-backed applications. I've worked extensively with authentication flows, third-party integrations, system optimization, and maintaining large codebases that require independent ownership and troubleshooting. Here's how I'll approach this project: Audit the existing codebase, architecture, APIs, and automation workflows Extend and optimize Node.js backend services while maintaining code quality Implement and troubleshoot authentication, OTP, webhook, and payment-related processes Improve database performance, scalability, and overall system reliability Test thoroughly and deliver production-ready enhancements with clear documentation

@maksymp65

Hello! I have already reviewed your description fully. You’re looking for a senior individual full-stack/backend developer to join a production visa booking automation system, with strong focus on Node.js, complex API integrations, authentication flows, and system scaling. ⚡The key challenge is understanding and extending an existing production-level automation system while safely handling sensitive workflows like authentication, OTP, webhooks, and payment flows without breaking stability. ✅To solve this, I will work directly within your existing Node.js codebase, analyze current architecture, and extend it in a clean and scalable way. I will focus on strengthening API integrations, improving authentication/OTP flows, ensuring reliable webhook handling, and optimizing database structure for performance and scalability. I am comfortable working with reverse-engineered or partially documented systems and can quickly adapt to existing production logic while maintaining stability. I can work independently, write production-ready code, and integrate smoothly into an active development environment. Q1: What parts of the system currently need the most urgent fixes or scaling improvements? Q2: Is the codebase already documented or will I need to map the architecture first? Q3: Are you using any specific payment or OTP provider services?

@marias597

A motivated and curious individual with strong interest in technology, AI tools, and creative writing. Skilled in quickly understanding new concepts and applying them to academic projects and practical use cases. Experienced in exploring programming fundamentals, data-related concepts, and online platforms for learning and career development. Demonstrates creativity through storytelling and content development, along with problem-solving abilities in technical and analytical tasks. Passionate about continuous learning, especially in AI, software development, and digital opportunities. Seeking opportunities to apply skills in real-world environments, contribute effectively to projects, and grow professionally in a dynamic and technology-driven field.