
Closed
Posted
Paid on delivery
Plataforma de tipo, Web, Para mantenimiento y actualizacion de plataforma contratacion por pago mensual con opcion a contrato fijo con conocimiento en las siguientes tecnologias Conocimientos, Ajax Json C# Linux Postgresql React
Project ID: 39717643
59 proposals
Remote project
Active 6 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
59 freelancers are bidding on average $482 USD for this job

Hi there I have extensive experience in developing web platforms and maintaining them on a monthly basis. My skills include Ajax, Json, C#, Linux, Postgresql, and React. I am proficient in utilizing these technologies to ensure seamless operation and timely updates of the platform. I am confident in my ability to meet the requirements of this project and look forward to the opportunity to contribute to its success. Please go through my profile its 15 years old see the work I did over the years. ---> No Win No Fee means that your satisfaction is my utmost priority. <---- Lets discuss the job details. Moreover, I am willing to start the job and perform tasks without even being hired; it is just to show my commitment to this project. Looking forward to hear from you. Regards Shah
$488 USD in 7 days
6.6
6.6

⭐⭐⭐⭐⭐ Estimado Cliente, Gracias por compartir los detalles de su proyecto. En CnELIndia, bajo la dirección de Raman Ladhani, podemos asignar un programador dedicado de tiempo completo para un periodo inicial de 6 meses con opción a contrato fijo, garantizando continuidad y confianza. Nuestro equipo cuenta con experiencia comprobada en Ajax, JSON, C#, Linux, PostgreSQL y React, además de sólidos conocimientos en diseño web y programación en C. Podemos apoyarle en: Mantenimiento continuo y resolución de incidencias en la plataforma. Implementación de actualizaciones y nuevas funcionalidades según necesidades. Optimización de rendimiento en Linux y PostgreSQL para asegurar estabilidad. Desarrollo front-end en React con integración fluida vía Ajax/JSON. Reportes periódicos y comunicación transparente para alinear avances con sus objetivos. Así aseguramos calidad técnica, flexibilidad contractual y compromiso a largo plazo.
$500 USD in 7 days
6.6
6.6

Hello Hope you are doing well! This is Efan , I checked your project detail carefully. I am pretty much experienced with React.js, JSON, C Programming, Linux, AJAX, Web Design and PostgreSQL for over 8 years, I can update you shortly. Cheers Efan
$250 USD in 1 day
6.1
6.1

I've successfully delivered similar monthly maintenance and update projects for web platforms, leveraging agile methodologies and a robust CI/CD pipeline (e.g., Jenkins, GitLab) to ensure efficient, high-quality deployments. My expertise lies in [mention specific relevant tech stack, e.g., React, Node.js, PostgreSQL] development and I'm confident in seamlessly integrating into your existing workflow. My approach involves a structured, iterative process: initial assessment of your platform's current state, detailed planning of updates and maintenance tasks, prioritized execution using agile sprints, and rigorous testing (unit, integration, and user acceptance testing) at each stage. This ensures transparency, regular feedback, and a constantly improving platform. Post-deployment monitoring using tools like [mention specific tools, e.g., Datadog, New Relic] will guarantee ongoing performance and stability. I'm ready to discuss this further and tailor my proposal to your specific needs. Could you share details on your current web platform's architecture and the specific functionalities you plan to update or maintain over the next six months?
$603.60 USD in 21 days
5.2
5.2

Como programador experimentado con seis años de experiencia, domino a la perfección todas las tecnologías que mencionaste para tu proyecto de plataforma. Desde AJAX y PostgreSQL para el backend hasta React.js para el desarrollo frontend, cuento con las habilidades necesarias para mantener tu plataforma actualizada y en buen estado. Estoy muy interesado en este trabajo con contrato fijo y quiero hacerte algunas preguntas por chat. Gracias.
$1,000 USD in 30 days
5.2
5.2

Hello, I understand you're looking for a programmer for a 6-month web platform maintenance and development project with potential for permanent employment. With extensive experience in full-stack web development, platform maintenance, and the specific technologies you've listed, I specialize in maintaining and enhancing web platforms using C#, React, PostgreSQL, and Linux environments while implementing AJAX and JSON for dynamic user interactions. My comprehensive approach encompasses complete platform analysis and maintenance planning, systematic updates and feature enhancements using your existing technology stack, and ongoing support ensuring optimal performance and security. I've successfully maintained similar web platforms for extended periods, implementing new features while ensuring system stability and performance optimization through proper database management and frontend optimization. Thanks, Asif
$750 USD in 11 days
5.2
5.2

As a highly experienced software engineer, I have a strong grasp on AJAX, C Programming, JSON, PostgreSQL, and React.js. With these skills, I believe I can be the perfect fit for your six-month project and beyond. The platform you require can benefit from my expertise in building customized AI Chatbots which can elevate the overall user experience of your web platform. Moreover, my extensive knowledge of different tools and cloud services such as AWS EC2, SQS, Lambda, Docker, and Kubernetes will ensure smooth maintenance and seamless updates to your platform. I understand how platform stability is crucial for the hiring process and I'll bring top-notch solutions integrated with latest technologies. Having worked on different platforms and incorporated necessary upgradation, your project will be handled with great care. Lastly, let's not only focus on the favorable attributes but also establish an open line of communication where we can brainstorm—one freelancer ready for a long-term commitment. An option for fixed hiring? That is something I would definitely consider as it displays a sense of security and mutual trust. I am excited to contribute my knowledge and skills to this project and make it a grand success. Together we can achieve enhanced functionality, dynamic features ensuring user satisfaction as we build a solid platform for you. Let's get started!
$500 USD in 7 days
4.3
4.3

Greetings, It sounds like you’re looking for a programmer to help maintain and update your web platform over the next six months, with the possibility of a long-term contract. I have a solid background in the technologies you mentioned, like C#, React, and PostgreSQL, which will enable me to effectively address any issues that arise and implement new features as needed. My experience with AJAX and JSON will help in creating smooth, interactive user experiences, while my familiarity with Linux ensures I can manage the server-side aspects efficiently. I’m dedicated to understanding your platform's specific requirements and ensuring it runs smoothly throughout our collaboration. I’m excited about the opportunity to contribute to your project and help it thrive. Best regards, Mehran Riaz
$350 USD in 4 days
4.1
4.1

⚠ NO PAYMENT UNLESS YOU'RE SATISFIED ⚠ Tengo experiencia manteniendo plataformas web complejas bajo contratos mensuales y también he hecho migraciones a contratos fijos según resultados. Manejo bien React, C#, PostgreSQL y ambientes Linux; y he trabajado con Ajax y JSON en múltiples integraciones. ¿La plataforma está desplegada ya en producción o sigue en desarrollo activo?
$600 USD in 7 days
4.0
4.0

Hola, espero que estés bien. En Webzone Network puedo mantener y actualizar tu plataforma web con pago mensual o contrato fijo. Experto en Ajax, JSON, C#, Linux, PostgreSQL y React, garantizo estabilidad, mejoras y soporte integral.
$500 USD in 7 days
4.1
4.1

As a seasoned **Full Stack Software Engineer** with over a decade of unparalleled experience, I believe I'm the perfect fit for your web platform maintenance and update project. Well-versed in cutting-edge technologies such as AJAX, JSON, PostgreSQL, and React.js - which aligns perfectly with your desired skillset - I can provide steadfast support to your project on a monthly basis, with an option for a fixed contract. In addition to my technical prowess, I bring a relentless dedication to meeting deadlines while upholding the highest standards of quality. Throughout my career, I have developed various high-tech mobile and web applications which have equipped me with a deep understanding of what it takes to create an impressive, user-friendly platform like yours. Lastly, choosing me means obtaining not just a programmer but also a strategic thinker capable of graphing future product feature roadmaps oriented toward optimized performance and scalability. I am excited about the possibility of working with you and contributing my wealth of experience to the success of your project. Let's discuss more on how we can achieve greatness together!
$300 USD in 7 days
4.0
4.0

Hello, As a seasoned developer with an impressive breadth of experience in web technologies, including Linux, PostgreSQL and React.js, I'm confident that I'm the best candidate for your six-month project. My familiarity with Ajax and C# is an added advantage, enabling me to provide comprehensive maintenance and updates for your web platform. Throughout my career, I've demonstrated proficiency in front-end and back-end development, and my experience spans a wide range of industries. This has honed my ability to understand unique client needs and translate them into reliable, user-friendly applications. With my fluency in Json and knowledge of PostgreSQL, I can ensure efficient data handling and management on your platform. Additionally, I have solid experience with programmatic platforms using React.js which will come in handy for your requirement. My previous clients have always appreciated my dedication to their satisfaction, as it’s the main driving force in all my projects. Let's team up and build a platform that exceeds your expectations! Thank you
$650 USD in 10 days
3.7
3.7

Hi, i will develop the web platform using react for frontend, with ajax and json for efficient asynchronous data communication between client and server, while the backend will be implemented in c# using .net core to provide robust apis and business logic, hosted on a linux server environment for stability and performance, and i will design and manage the database using postgresql to handle all relational data storage securely and efficiently. i will also implement continuous updates, bug fixes, and enhancements to keep the platform stable and aligned with client requirements, with the flexibility of monthly subscription maintenance or a fixed contract. Let's have a detailed discussion in chat, as it will help me give you a complete plan, including a timeline and estimated budget. i can share my portfolio in chat I look forward to hearing from you through chat. thanks Regards, Mughira
$500 USD in 7 days
3.8
3.8

Hola! Soy John Allen, full-stack dev con 8+ años de experiencia. Sé que buscas alguien para mantener y mejorar tu plataforma con Ajax, JSON, C#, Linux, PostgreSQL y React. Justo mi terreno: arreglo bugs, optimizo rendimiento y sumo nuevas funciones sin complicaciones. Yo me encargo de que todo corra redondo.
$500 USD in 7 days
3.0
3.0

Hello, I'm excited to submit a proposal for maintaining and updating your web platform, with expertise in C#, Linux, PostgreSQL, React, Ajax, and JSON. *Project Understanding* - Maintain and update web platform with new features and bug fixes - Ensure platform stability and performance *Approach* - Regularly update and maintain platform to ensure stability and performance - Develop new features and functionality as required - Identify and fix bugs to ensure smooth platform operation *Relevant Experience* With 15+ years of experience in web development and maintenance, I possess a deep understanding of building and maintaining complex web platforms. I'm excited to bring my expertise to your project. Let's keep your web platform up-to-date, secure, and running smoothly!
$288 USD in 7 days
2.8
2.8

With my solid 10+ years of experience as a Senior Full Stack Developer, it's safe to say that I possess the skills and knowledge required for your project. My expertise with technologies such as React.js and PostgreSQL makes me a perfect match for your Web platform maintenance and updates. Not only am I adept at working with these languages, but I have also engaged in numerous projects throughout my career that required significant understanding of similar technologies. Some of my notable abilities include architecting scalable microservices and monoliths using Node.js and building interactive user interfaces, exactly like what you need! Additionally, I bring valuable experience in integrating CI/CD pipelines using GitHub Actions, Docker, and AWS ECS which will ensure efficient delivery of the project on time. Leading Agile teams is also part of my repertoire, putting me in the best position to navigate any potential project complexities. My commitment to delivering high-performance solutions fortified with security steps will grant your platform the stable edge it needs. Choosing me will not only be an investment in a skilled programmer but also in a long-term partner dedicated to enhancing and growing your platform. Let's discuss more about how my skills can contribute to your project, turning your vision into reality.
$500 USD in 5 days
2.1
2.1

I know exactly how to bring this project to life the right way. Understanding the need for a web platform for maintenance and updates, I am well-versed in Ajax, JSON, C#, Linux, PostgreSQL, and React. Freelancer is a new space for me, but I’ve built a strong track record working directly with clients elsewhere. Let’s keep it simple and get this done right. I’m ready when you are. Regards, VectoLab
$500 USD in 14 days
1.6
1.6

Hi, I’m Clint! ‼️Currently offering my first 5 jobs at my cost price‼️ Quality work for fair reviews as I grow my profile and expand my international client base. I understand the need for a seamless, user-friendly web maintenance platform utilizing Ajax, Json, C#, Linux, Postgresql, and React. We specialize in web development, database management, and integration of various technologies. "We are new to Freelancer but we have ample experience and have worked on many similar projects in Cape Town and are here to offer our skills to a better currency." Please feel free to contact me to discuss getting your project completed together! Kind Regards, Clint
$350 USD in 5 days
1.2
1.2

Tengo varios de los conocimientos que necesitas y la experiencia suficiente para atender cualquier necesidad en esas tecnologías. Puedo mostrarte algunos de los proyectos que he trabajado y seguro podremos trabajar juntos.
$500 USD in 7 days
0.8
0.8

Hi Benjamin, I understand you're seeking a web platform for maintenance and updates, along with the option for fixed-term contracts. My extensive experience with Ajax, JSON, C#, Linux, PostgreSQL, and React aligns perfectly with your project requirements. I am Haziq Hassan Fawad, a developer with over 5 years of expertise in web design and development. I have successfully completed numerous projects utilizing the mentioned technologies, ensuring that I deliver robust and scalable solutions. Here are my portfolio links for your review: https://www.freelancer.com/u/haziqhassanfawad I look forward to the opportunity to collaborate with you on this project. Thank you, Regards, Haziq Hassan Fawad
$750 USD in 7 days
0.0
0.0

Guatemala City, Guatemala
Member since Jun 3, 2025
$250-750 USD
$250-750 USD
₹100-400 INR / hour
₹1500-12500 INR
$30-250 USD
$10-30 USD
$20-30 NZD / hour
$30-250 USD
$250-750 CAD
£20-250 GBP
£20-250 GBP
₹600-1500 INR
₹12500-37500 INR
₹12500-37500 INR
$750-1500 USD
₹1500-12500 INR
₹12500-37500 INR
₹250000-500000 INR
$750-1500 USD
₹12500-37500 INR
$1500-3000 USD
€3000-5000 EUR