Repair of Node.js application (backend + frontend + password reset) VPS, NGINX, PM2

Hello, Marcin

I can implement it from scratch, fast delivery, good results.

PM is open.

Addressing the issues with your Node.js backend on the VPS is straightforward once we isolate the token validation and SMTP config mismatches. Since emails are being sent within the app but not arriving, I will investigate your SMTP transporter settings and check for missing SPF or DKIM records on the Linux server. I will also audit the Express endpoints to ensure tokens are correctly generated and validated during the password reset flow.
I have extensive experience managing full-stack JS apps behind Nginx and PM2. I will start by checking PM2 logs and Nginx error files to pinpoint where the authorization fails. For the admin panel, I will set up a secure role-based access system to manage user permissions. To give you an idea, I will use a middleware approach like:
const checkAdmin = (req, res, next) => {
if (req.user && req.user.role === 'admin') return next();
res.status(403).send('Unauthorized');
};
I can access your server via SSH immediately to debug the environment. After fixing the core logic, I will harden the API inputs and ensure the whole system is stable and production-ready.

Looking forward to discussing your project in detail.

I can handle this.

I have experience in backend and web systems (Node.js, PHP, Python), I have worked on fixing existing projects, integrations, and systems with logging, payments, and APIs. I feel comfortable debugging and bringing applications to a stable state.

I will handle logging and password reset — diagnosing endpoints, tokens, validation, and flow between the frontend and backend.

Mailing is also no problem — I will check SMTP / API, logs, deliverability, and fix the sending.

Security: I will check authorization, endpoints, data validation, and basic security to ensure there are no holes.
…
Admin panel — I can create accounts, roles, and basic management.

Server: I work on Linux VPS, I manage Nginx, PM2, backend configuration, and deployment, so I will check everything end-to-end.

Finally, I will conduct tests: logging in, password reset, emails, stability.

I can start immediately and begin with a quick audit + a list of issues to fix.

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Hello!

I am ready to join your project and conduct a full audit followed by fixing the functionality and security of the application.
My experience
I am a backend/full-stack developer with over 4 years of experience:
Node.js (Express, NestJS)
REST API, authorization, working with tokens
PostgreSQL, MongoDB
Docker, VPS (Linux), Nginx, PM2
… Integrations (SMTP, Twilio, payment systems)
Experience working with real production projects (including high-load services)
First, I will conduct a quick audit (4–6 hours) to:
identify key issues
assess the scope
propose a clear plan for fixes
After that, we will gradually close all tasks.

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Good morning,

I have reviewed the assignment and I see a classic set of problems that I know well from my own practice: broken login endpoints, inconsistent password reset, and SMTP configuration that "leaves" the server but never reaches the inbox.

The estimate for the comprehensive execution of the scope: 2,400 - 3,200 PLN net, deadline: 5-7 working days from obtaining SSH access.

I start with an audit of the code and server logs, then I sequentially fix: logging, password reset, email deliverability, API security, and the admin panel. I complete each stage with a test before moving on.

I have been fixing and securing Node.js/Express applications on VPS for several years, I know Nginx and PM2 from a production perspective, not just from documentation. Selected projects from my portfolio can be seen at soft-synergy.com/portfolio.
…
I would be happy to schedule a short online meeting during which we will discuss the project details directly, and after the conversation, you will receive a detailed technical report and a binding offer.

Antoni Seba
soft-synergy.com

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Hello, can I take a look at the code first? I can start right away.

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ready to help you out with this

will send you previous work in chat - to make sure we match

Good morning!
I have extensive experience working with Node.js (Express) and fixing existing web applications — both backend and frontend (JavaScript/HTML).
I have worked with Linux VPS servers, Nginx, PM2, and email delivery systems (SMTP / API).
I specialize in diagnosing and improving key features such as login, password reset, user authorization, as well as strengthening application security.
I can also easily perform final tests and verify server configuration.
Projects I have worked on:

https://rstays.com/ — full backend (Node.js Fastify, payments, AI, chat, Firebase Auth, mobile + web version).

… https://ai-desk.ai/ — backend built from scratch (Node.js, payments, roles, AI).

https://seetruth.app/ — backend of a mobile application (Node.js Express).

GitHub: https://github.com/axbuglak/
I would be happy to analyze the application, propose a repair and security plan, and provide a detailed estimate after a brief review of the project.

Sincerely,
Alexey Buglak

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Hello!

My name is Roman, I am a Full-stack developer with 4 years of experience (Node.js/Express). I looked at your task - the problem is not only in the code, as I understand, but also in the connection "application - mail server - Nginx configuration."

Here’s how I can help with your issues:

Auth & Security Diagnosis: I will analyze the logic of JWT/sessions and check token validation. I will implement protection against Brute-force and check the Authorization header at the Middleware level.

Email Recovery: In addition to checking SMTP in Node.js, I will audit the DNS records of your domain (SPF, DKIM, DMARC). Without this, Gmail and Outlook will throw your emails into spam (Gmail/Outlook).
…
VPS Stabilization: I will optimize the Nginx configuration (reverse proxy) and set up resource monitoring in PM2 to prevent backend crashes.

Admin Panel: I will create a simple and reliable admin panel, without any heavy frameworks, so you can easily edit content.

Why choose me:

Experience with Legacy: I can understand what has already been written, I won’t rewrite everything from scratch.

Comprehensive Approach: I set up not only JS but also the server environment (Linux/Nginx).

Security above all: Before starting work, I always make a full backup of the database and project files.

Estimated time: 3-5 days (depending on the volume of edits in the admin panel).

Bonus for you: After completing the work, I will provide a short "Security Checklist" for your server to avoid similar security issues in the future.

I am ready to start the audit today. I would be happy to discuss the details in private messages!

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Hello,

I have reviewed the assignment — it is a typical case where the application works, but it requires a solid diagnosis and addressing several key areas at once: login, password reset, emails, security, and server configuration.

Estimate: 1800 - 2500 PLN net
Deadline: 5-7 working days

I start with an audit of the code and server configuration (SSH, Nginx, PM2) to quickly locate the sources of the problems, rather than treating the symptoms. Then I fix each area covered by the assignment and finish with end-to-end testing — login, password reset, email deliverability.

… I regularly carry out similar projects — repairs, audits, and securing Node.js/Express applications on VPS is one of my main areas. I know where errors most often occur in this type of stack and I work efficiently, without unnecessary delays.

I would be happy to schedule a short online meeting — it is not just a conversation, but a specific consultation, after which you will receive a detailed report assessing the state of the application and a binding offer. You can find some of my projects here: https://soft-synergy.com/portfolio

Jakub Czajka
https://soft-synergy.com

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Hi! I can complete your project. I have experience. Write to me, let's talk.

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Hello, I have the appropriate experience in the required technologies. Please contact me privately, I am able to complete all tasks, I will start from today. I am happy to help!

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Good morning,
I have experience in repairing existing Node.js/Express applications on VPS (Linux, Nginx, PM2) and I can quickly restore key features and improve security.

What I will do:

diagnostics and repair of user login,
repair of the password reset process (tokens, validation, reset link),
repair of email sending (SMTP/API, logs, deliverability),
basic security hardening of the API and authorization,
… creation of an administrator account and granting permissions,
verification of VPS, Nginx, and PM2 configuration,
final tests (login, password reset, email, stability).

I can start immediately after receiving SSH access and project files.

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Good day.

I am interested in your project. I am a Full-Stack JavaScript developer with approximately 5 years of experience, with a primary stack of Node.js (Express), JavaScript, MongoDB, REST API. I have experience working on both developing new systems and analyzing and fixing existing projects, including issues with authorization, security, and server configuration.

In similar tasks, I usually work in the following order:
Application audit
checking authorization logic
analyzing login / reset password endpoints
checking token handling
… checking frontend ↔ backend communication
Server-side diagnostics
analyzing Node.js / PM2 logs
checking Nginx configuration
checking application operation on Linux VPS
Functionality fixes
login and authentication flow
reset password (token generation and validation)
fixing SMTP / email delivery
Security
checking JWT / session logic
protecting API endpoints
data validation
basic security best practices
Final testing
login
password reset
email sending
server stability
I also have experience with:
Linux VPS
Nginx
PM2
SMTP / email API
JWT authentication
debugging production Node.js applications
I am ready to quickly join the project, conduct an audit, and propose solutions.
If possible, please send:
the project structure or Git
a brief description of the issues occurring during login / email
access to staging or logs
After that, I will be able to quickly assess the scope of work.

Best regards,
Ruslan Zotsenko
Full-Stack JavaScript Developer (Node.js)

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Hello. I understand the problem. I have rich experience with node.js, so I think that my expertise will be helpful.

Hello.
I have carefully reviewed your requirements.
Based on this review, I am confident that I can complete the current revisions in a short period of time and work with you to create a great result.
I would like to have the opportunity to discuss this in more detail.
Thank you.
Ifeoluwa.

Hello.I have been working with Node.js for more than 8+ years.I'm ready to cooperate.

Hi! I’m a Senior Full-Stack JavaScript Developer with 8+ years of experience working with Node.js, Express, VPS Linux, Nginx, and PM2.

I have experience debugging production Node.js apps and stabilizing systems on VPS environments.

I’m available to start immediately and can quickly diagnose the issues and provide fixes. Happy to discuss the details and review the project.

Best,
Jeo Vincent Carretas

Hello! I will complete your task quickly and efficiently.

My portfolio: https://freelancehunt.com/ua/freelancer/romas6ka.html#portfolio
Write to me, I will start working today. I will be happy to collaborate with you!

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Good morning.

I can help with the analysis and repair of applications. I have experience working with Node.js, Express, Linux server configuration, and deployments with Nginx and PM2.

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Good day.
I know Node JS and PM2 very well.
I write various tasks in Node JS + Express.
I can help fix errors.
I will specify the exact price and deadlines after checking the code.
If you have any questions, you can write to me in private messages.

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