
Fechado
Publicado
Pago na entrega
I have a small web application built with the PERN stack that has a reproducible bug affecting data flow between the API and the frontend. The issue occurs when fetching and displaying records from PostgreSQL. The API responds, but the UI does not behave as expected in certain cases. This is a debugging task only — no new features, no redesign, and no large refactors. Scope of Work: - Investigate the API ↔ frontend interaction - Identify the root cause (query, API logic, or React state handling) - Apply a minimal, correct fix - Verify the issue is fully resolved Good Fit If You: - Have real experience with PERN or MERN-style stacks - Are comfortable debugging backend queries and frontend state Prefer short, focused tasks
ID do Projeto: 40173848
49 propostas
Projeto remoto
Ativo há 4 dias
Defina seu orçamento e seu prazo
Seja pago pelo seu trabalho
Descreva sua proposta
É grátis para se inscrever e fazer ofertas em trabalhos
49 freelancers estão ofertando em média $25 USD for esse trabalho

Hello Sir I am experienced software developer. i will check and identify root cause of issues on API. I would ask you API build in FastApi or flask. I have 12+ years of experience. Looking For Positive response Best Regards Jitendra Sharma
$30 USD em 1 dia
5,4
5,4

Having built numerous PERN and MERN stack applications throughout my career, I have a deep understanding of the unique challenges they present, especially when it comes to debugging and troubleshooting. With my experience in both backend development and frontend UI UX, I am perfectly suited for your project. For this specific task of fixing API and UI bugs in your PERN app, I approach it with a two-fold perspective: one targeted towards investigating the issue's root cause, be it a query or state handling problem and another towards providing a minimal but correct fix that ensures seamless data flow between your PostgreSQL database and the frontend. My work is focused and precise, characteristics that are essential for addressing short-term projects like yours. But more than just delivering results on-time, I prioritize quality alongside effective communication, ensuring that you stay in the loop throughout every stage of the project. Let’s collaborate and turn your application into a bug-free masterpiece. Reach out to me so we can discuss further! (677 words)
$20 USD em 7 dias
5,8
5,8

Hi there, I am a strong fit for this task because I focus on isolating and fixing data flow bugs in existing PERN applications without introducing unnecessary changes. I have hands-on experience debugging PostgreSQL queries, API response handling, and React state issues that cause UI inconsistencies. I work directly with Express APIs, SQL queries, and React hooks or state management to trace issues end to end. I reduce risk by identifying the exact failure point, applying the smallest possible fix, and verifying behavior across the affected cases only. I am available to start immediately and can resolve this as a short, focused debugging task. Regards Chirag
$30 USD em 3 dias
4,4
4,4

Hey , I just went through your job description and noticed you need someone skilled in Java, Node.js, Backend Development, PostgreSQL, NoSQL Couch & Mongo, API Integration, API Development, MySQL, Frontend Development and JavaScript. That’s right up my alley. You can check my profile — I’ve handled several projects using these exact tools and technologies. Before we proceed, I’d like to clarify a few things: Are these all the project requirements or is there more to it? Do you already have any work done, or will this start from scratch? What’s your preferred deadline for completion? Why Work With Me? Over 180 successful projects completed. Long-term track record of happy clients and repeat work. I prioritize quality, deadlines, and clear communication. Availability: 9am – 9pm Eastern Time (Full-time freelancer) I can share recent examples of similar projects in chat. Let’s connect and discuss your vision in detail. Kind Regards, Zain Arshad
$10 USD em 3 dias
4,0
4,0

Hi there! A bug that blocks data from showing correctly can disrupt your app’s workflow and frustrate users. Even when the API responds, if the frontend doesn’t render properly, it creates confusion and slows down usage. I can investigate the PERN stack interaction, identify whether the issue is in the PostgreSQL query, API logic, or React state, and apply a minimal, precise fix. I’ll verify everything works as expected so your data flows smoothly without any unnecessary changes or refactoring. Can you share the specific API endpoint or component where the issue occurs? Start a chat now, and I can fix your app’s data flow quickly and efficiently.
$20 USD em 7 dias
3,9
3,9

Hi, I can quickly fix your PERN stack bug where the API responds but the UI fails to display PostgreSQL records properly. With 3+ years as a Senior PHP Developer, I've debugged countless API-frontend issues in high-traffic Laravel/Vue.js apps at ACE Money Transfer and Digital Aimz. My experience aligns perfectly: - Built and optimized RESTful APIs with MySQL (similar to PostgreSQL) and Redis caching, reducing response times by 25-30%. - Developed Vue.js interfaces for real-time data display, handling state and API integrations flawlessly for 15,000+ users. - Debugged and fixed data flow problems in payment systems, ensuring 100% accuracy without refactors. I'll investigate API queries, frontend state, apply a minimal fix, and verify resolution—done in hours for short tasks like this. Available immediately. Can we hop on a quick call to discuss the bug details?
$20 USD em 7 dias
4,0
4,0

Hi there, I have 7+ years of experience in PostgreSQL, Java, API Development and can deliver a clean, reliable solution for your project. I value clear communication and timely delivery, and I’m ready to get started immediately. Let’s connect and discuss your goals. Best regards, Dorian
$20 USD em 1 dia
3,6
3,6

Having spent considerable time working with both the MERN and PERN stacks, I'm well versed in hunting down and resolving those pesky, intermittent bugs that can wreak havoc on a project's functionality. My experience includes conducting thorough investigations into the flow of data between APIs and frontend systems, ensuring that the intended outcomes are consistently achieved. In terms of your specific needs, I'm confident in my ability to tackle this debugging task efficiently. Whether it involves unearthing query issues, digging into API logic or examining React state handling, I'm comfortable with these backend and frontend intricacies. As a seasoned developer conversant with PHP, Node.js, Vue.js, and C#, I have mastered debugging techniques that allow me to pinpoint issues swiftly and find minimal, correct fixes to ensure full resolution and optimization. In all my work, I bring a meticulous attention to detail aimed at delivering code that is not only effective but efficient and scalable as well. With me on your team, you can expect a focused approach that will address this issue quickly so that you can get back on track without any further disruptions. I am looking forward to having the opportunity to showcase my skill set by assisting in fixing your PERN stack application promptly.
$30 USD em 7 dias
3,5
3,5

Hola, soy desarrollador Full Stack con amplia experiencia en el desarrollo de aplicaciones utilizando el stack PERN (PostgreSQL, Express, React y Node.js). Estoy seguro de poder ayudarte a identificar y corregir el bug que se presenta al obtener y renderizar registros desde PostgreSQL en la interfaz de usuario, asegurando un flujo de datos estable y un comportamiento consistente del frontend. Estoy disponible para comenzar de inmediato; si deseas más detalles o tienes alguna pregunta, no dudes en escribirme por el chat y lo revisamos juntos.
$128 USD em 2 dias
3,3
3,3

Hello, I am a senior full-stack developer specializing in the PERN stack. I have extensive experience in debugging asynchronous data flows and state synchronization issues between Node.js/Express APIs and React frontends. My Debugging Approach: Network Audit: Inspect the API response headers and payload structure to ensure data integrity. Query & Logic Check: Verify the PostgreSQL query results and any backend middleware transformations. State Mapping: Debug the React lifecycle and state updates to find where the data-to-UI handshake is failing. I provide minimal, surgical fixes that resolve the root cause without bloating your codebase. I can start immediately and turn this around quickly. Regards Saira
$10 USD em 1 dia
3,3
3,3

Experienced with PERN and MERN stacks and strong at debugging API to React data flow issues. I will trace the problem across PostgreSQL queries backend logic and React state to identify the exact root cause. I will apply a minimal correct fix and verify the issue is fully resolved.
$30 USD em 1 dia
3,0
3,0

Hello! I can help you resolve the issue with your web app’s data flow between the API and frontend. With extensive experience working with the PERN stack, I’m confident I can quickly investigate and debug the API ↔ frontend interaction, identify the root cause, and apply a minimal fix to ensure your UI behaves as expected. Let’s chat to get the issue sorted efficiently! Best regards, Dragan
$100 USD em 2 dias
3,0
3,0

Hi client, I will help you debug the web app. I am a experienced web developer with good debugging skills. Share me your repo and I will start debug. I will try to deliver it you by today.
$30 USD em 1 dia
2,9
2,9

Hello, I am immediately available to troubleshoot and resolve the API-UI interaction issue. My experience with PERN stack applications includes debugging data flow problems between PostgreSQL and React, ensuring accurate data display. I would investigate the API responses and React's state handling, applying a minimal fix to address the root cause. Once fixed, I will verify the solution thoroughly. Would you like to discuss the specific bug scenario to clarify the issue further? Best regards, Mojjammil
$100 USD em 1 dia
2,4
2,4

Hi there, You’re absolutely in the RIGHT PLACE. I’ve delivered SIMILAR PROJECTS multiple times and know EXACTLY how to execute this efficiently and correctly from day one. To lock down the SCOPE, TIMELINE, AND PRICING, I’ll need to ask you a few key questions. Unfortunately, Freelancer’s 1500 CHARACTER LIMIT doesn’t allow me to break everything down properly here. Let’s jump on CHAT so I can show you my PROVEN PAST WORK, walk you through the REAL RESULTS I’ve delivered, and outline a CLEAR ACTION PLAN for your project. You’ll immediately see why my approach is DIFFERENT and EFFECTIVE. If you’re serious about getting this done RIGHT, I’m ready to move forward. Looking forward to CONNECTING and WINNING TOGETHER. Cheers, Mayank B
$20 USD em 7 dias
2,5
2,5

Hi, I have carefully reviewed your project requirements regarding the debugging issue in your PERN stack application, specifically the data flow disruption between the API and frontend. With solid experience in PERN and MERN stacks, I am confident in my ability to quickly pinpoint whether the cause lies within the PostgreSQL query, API logic, or React state management. I specialize in precise debugging and delivering minimal fixes that fully resolve issues without unnecessary changes. I propose to start by thoroughly investigating the API to frontend interaction, isolating the root cause, and then applying and verifying a targeted fix to restore expected UI behavior. I can have this done efficiently within a short timeframe to meet your preference for focused tasks. Let me know your availability to discuss next steps and timelines. Can you provide access to the current codebase and any error logs or screenshots that illustrate the UI issue? Best regards, Andrew
$15 USD em 1 dia
2,3
2,3

✨✨✨✨✨ Hi, I have hands-on experience debugging PERN and MERN stack applications, especially issues where APIs respond correctly but frontend state or rendering breaks in edge cases. I’ll trace the full data flow—from PostgreSQL query through the API layer to React state and components—to pinpoint the exact root cause. My approach is minimal and precise: apply only the fix that’s needed, without refactors or feature creep. I’ll verify the resolution end-to-end so records fetch and display correctly in all affected scenarios.
$20 USD em 1 dia
2,3
2,3

Hi, this is right in my wheelhouse. I work daily with PERN/MERN stacks and specialize in debugging API ↔ frontend data flow issues — especially cases where the backend responds but React state or rendering breaks in edge scenarios. I’ll trace the request from PostgreSQL → API → React, identify the exact failure point (query, controller, or state handling), and apply a minimal, safe fix without refactoring or adding features. You’ll get: Clear root-cause explanation Clean, targeted fix Verification that the UI now behaves correctly I can start immediately and this should be a short, focused task.
$22 USD em 1 dia
1,8
1,8

Hi I am a passionate fullstack developer with strong experience in PERN-style stacks, including PostgreSQL, Node.js, Express, and React. I’m comfortable debugging data flow issues across API queries, backend logic, and frontend state handling. I’m ready to start immediately and can fully commit to your team. For your task, I can investigate the API-to-UI interaction, identify whether the issue is coming from the SQL query, API response handling, or React state logic, and apply a minimal, correct fix without refactoring or adding features. I’ll verify the issue is fully resolved before delivery. Looking for your reply. Best Regards, Gazmir
$10 USD em 1 dia
1,0
1,0

Hello Robert K., We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on Java, JavaScript, NoSQL Couch & Mongo, MySQL, Node.js, PostgreSQL, Backend Development, Frontend Development, API Development, API Integration Lets connect in chat so that We discuss further. Regards
$20 USD em 7 dias
0,6
0,6

San C, Venezuela
Método de pagamento verificado
Membro desde jan. 18, 2026
$250-750 USD
$30-250 USD
$30-250 USD
$30-250 USD
₹150-400 INR / hora
$250-750 USD
₹75000-150000 INR
₹600-1500 INR
€30-250 EUR
$2-3 USD / hora
₹12500-37500 INR
₹600-1500 INR
$10-30 USD
₹1500-12500 INR
$15-25 USD / hora
₹600-1500 INR
mín. ₹2500 INR / hora
₹1500-12500 INR
$1500-3000 USD
₹12500-37500 INR
€30-250 EUR
$10-30 USD
₹150000-250000 INR
$30-250 USD