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I’m building a new service and need a backend expert who can own the entire authentication layer. The stack is TypeScript end-to-end, PostgreSQL for storage, and a React front-end that will consume your work through a clean RESTful API. Everything lives on a Linux server, so familiarity with its ecosystem is essential. Your main mission is to design and implement a rock-solid user authentication system—think sign-up, login, refresh tokens, password resets—while keeping performance tight and code readable. Alongside the coding, I need you to lock the server down: enforce SSL, fine-tune PostgreSQL roles, manage environment secrets, set up firewalls, and apply best-practice hardening so that security audits pass without a hitch. Deliverables: • Fully documented REST endpoints for all auth flows • PostgreSQL schema/migrations written in TypeScript • Security-focused server configuration files and scripts • Clear setup instructions so I can reproduce the deployment • Basic test suite covering critical paths If you write clean TypeScript, understand PostgreSQL inside out, and can speak Linux security fluently, I’d love to collaborate.
Projekt-ID: 40273156
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Hi 36, I’m a TypeScript-focused backend developer with strong experience building secure authentication systems on Linux-based deployments. I can design and implement a robust auth layer including sign-up, login, JWT access/refresh tokens, secure password resets, role-based access control, and clean RESTful endpoints tailored for your React frontend. I can fully own the authentication layer end-to-end and ensure it’s scalable, maintainable, and production-grade from day one. Looking forward to collaborating.
$560 USD på 1 dag
0,0
0,0
90 freelancere byder i gennemsnit $456 USD på dette job

Hello, I’m excited about the opportunity to contribute to your project. With my expertise in TypeScript backend architecture, secure auth flows, PostgreSQL schema design, and Linux server hardening, I can implement a complete authentication layer with sign-up/login, refresh tokens, password resets, and fully documented REST endpoints that your React front-end can consume cleanly. I’ll tailor the build for audit-ready security by setting up SSL, tightening PostgreSQL roles and permissions, managing secrets via environment tooling, and applying firewall and baseline hardening practices while keeping the codebase readable, performant, and well-tested. You can expect clear communication, fast turnaround, and a reproducible deployment package including migrations in TypeScript, configuration/scripts, setup documentation, and a focused test suite covering the critical paths. Best regards, Juan
$500 USD på 3 dage
5,5
5,5

With my 13+ years of experience as a Full-Stack Python and Web3 Developer, I would be thrilled to spearhead the development of your Secure Authentication REST Backend. My expertise in Python ensures clean code and high-performance systems, which aligns perfectly with your requirements. I've worked extensively with PostgreSQL and TypeScript, so designing and implementing your authentication system won't be a challenge for me. In addition to backend development, I have a deep understanding of Linux ecosystem, an essential asset for securing and hardening servers. I am well-versed in enforcing SSL, managing environment secrets, and setting up firewalls to enhance security. My diverse development skills paired with my dedication to delivering results make me confident that I can exceed your expectations with tangible deliverables including full documentation, test suite, and clear setup instructions. Let's connect and discuss how we can embark on this project together!
$250 USD på 2 dage
5,6
5,6

Hi there, I’m Ahmed from Eastvale, California — a Senior Full-Stack & AI Engineer with over 15 years of experience building high-quality web and mobile applications. After reviewing your job posting, I’m confident that my background and skill set make me an excellent fit for your project — Secure Authentication REST Backend . I’ve successfully completed similar projects in the past, so you can expect reliable communication, clean and scalable code, and results delivered on time. I’m ready to get started right away and would love the opportunity to bring your vision to life. Looking forward to working with you. Best regards, Ahmed Hassan
$500 USD på 5 dage
5,0
5,0

Hello Dear! I write to introduce myself. I'm Engineer Toriqul Islam. I was born and grew up in Bangladesh. I speak and write in English like native people. I am a B.S.C. Engineer of Computer Science & Engineering. I completed my graduation from Rajshahi University of Engineering & Technology ( RUET). I love to work on Web Design & Development project. Web Design & development: I am a full-stack web developer with more than 10 years of experience. My design Approach is Always Modern and simple, which attracts people towards it. I have built websites for a wide variety of industries. I have worked with a lot of companies and built astonishing websites. All Clients have good reviews about me. Client Satisfaction is my first Priority. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam
$250 USD på 7 dage
5,1
5,1

Hi there, I’m thrilled to dive into your project on Secure Authentication! With my extensive experience in developing robust authentication systems using TypeScript and PostgreSQL, I am confident that I can deliver the rock-solid user authentication layer you’re looking for. My background includes creating secure RESTful APIs and implementing performance-optimized solutions. I understand the intricacies of managing Linux environments and am well-versed in applying security best practices to ensure a seamless experience. I will design a comprehensive solution that includes documented REST endpoints, PostgreSQL schema, and security-focused configurations. You can expect everything to be thoroughly documented to facilitate easy deployment on your Linux server. Let’s discuss how we can take this project forward! What is your timeline for launching the authentication layer and are there any specific security protocols you wish to prioritize?
$610 USD på 7 dage
4,5
4,5

Hello, I can design and implement a secure, production-grade authentication layer for your TypeScript stack with PostgreSQL and React. Scope covered: Sign-up, login, refresh tokens, password reset (JWT-based, secure token rotation) Fully documented REST API endpoints PostgreSQL schema and migrations in TypeScript Hardened Linux server setup (SSL enforcement, firewall, role-based DB access, secrets management) Clean, readable code with a focused test suite for critical flows Clear deployment and setup documentation Security, performance, and maintainability will be the priority from day one. Ready to collaborate and deliver a robust, audit-ready authentication system. Best regards.
$650 USD på 4 dage
4,6
4,6

Hi, I came across your project "Secure Authentication REST Backend" and I'm confident I can help you with it. About Me: I'm a agency owner with over 8+ years of experience in Node.js, PostgreSQL, API Development, Backend Development, RESTful. , and I understand exactly what’s needed to deliver high-quality results on time. Why Choose Me? - ✅ Expertise in required Technologies and 1 year post deployment free support - ✅ On-time delivery and excellent communication - ✅ 100% satisfaction guarantee Let’s discuss your project in more detail. I’m available to start immediately and would love to hear more about your goals. Looking forward to working with you! Best regards, Deepak
$600 USD på 15 dage
4,6
4,6

As an experienced Full-Stack Developer, I bring to the table comprehensive knowledge and understanding of the technologies and systems your project requires, making me the perfect choice for your Secure Authentication REST Backend. With my extensive experience in working with Angular, Node.js, React, TypeScript and PostgreSQL, I can effectively design and implement the rock-solid user authentication system you need. Moreover, beyond just delivering what's required for this project, I offer long-term reliability. My client-centric approach means I don't just build and run; I'm committed to conducting regular maintenance and providing ongoing support. Value for money is also assured as proven by offering discounts to long-term clients like yourself. Trust me with your Secure Authentication REST Backend project, let's create something amazing together!
$500 USD på 12 dage
4,7
4,7

Hello, I can take full ownership of your authentication layer and deliver a secure, production ready TypeScript based solution. I would implement clean REST endpoints for signup, login, refresh tokens, and password reset using JWT with rotation and proper hashing, backed by a well structured PostgreSQL schema and migration setup. On the server side, I will harden the Linux environment with SSL enforcement, firewall configuration, restricted PostgreSQL roles, secure environment variable handling, and audit friendly configuration. The codebase will be modular, well documented, and covered by tests for critical auth flows to ensure reliability and reproducibility.
$500 USD på 7 dage
4,2
4,2

Hello, I am Vishal Maharaj, a seasoned professional with 20 years of experience in PostgreSQL, API Development, Backend Development, Node.js, and RESTful services. I have carefully reviewed your project requirements and am confident in my ability to deliver a secure authentication REST backend solution. To achieve this, I will design and implement a robust user authentication system, focusing on sign-up, login, refresh tokens, and password resets. I will ensure high performance and maintain readability of the code. Additionally, I will secure the server by enforcing SSL, configuring PostgreSQL roles, managing environment secrets, setting up firewalls, and implementing best security practices to pass audits seamlessly. Let's discuss further details to initiate the project. Cheers, Vishal Maharaj
$500 USD på 5 dage
5,3
5,3

Hi, I am a full-stack developer with over 8 years of rich experience in software development. I am familiar with TypeScript, Node.js, PostgreSQL, RESTful API development, and Linux server administration. For this project, the most important point is designing a secure and scalable authentication flow with proper token management and database role isolation. Authentication is the core security layer, so refresh tokens, password resets, and JWT handling must be implemented carefully to avoid leaks or privilege escalation. I will also harden the Linux server with SSL, firewall rules, and secure environment management to ensure it passes security audits. I'm an individual freelancer and can work on any time zone you want. Please contact me with the best time for you to have a quick chat. Looking forward to discussing more details. Thanks. Emile.
$250 USD på 7 dage
4,4
4,4

Hi, Thank you for posting this good task! You’re looking for a backend expert to fully own a secure authentication layer in TypeScript with PostgreSQL, expose clean REST APIs for your React frontend, and harden the Linux server to pass security audits. That aligns perfectly with the kind of infrastructure - focused systems I build. I have strong experience with Node.js (Express/Fastify), PostgreSQL schema design and role isolation, and secure auth flows using JWT, refresh token rotation, bcrypt/argon2 hashing, and strict validation. I structure auth cleanly (controller -> service -> repository), use short-lived access tokens with httpOnly refresh tokens, apply rate limiting and CSRF protection, and manage migrations in TypeScript (Prisma/Knex) for reproducibility. On the server side, I’ll enforce SSL (Let’s Encrypt), apply least-privilege PostgreSQL roles, secure environment secrets, configure firewall rules (UFW), and harden SSH access. You’ll receive documented REST endpoints (OpenAPI), setup scripts, and a focused Jest test suite covering critical flows. Estimated timeline: ~2 weeks for full implementation, documentation, testing, and server hardening. A few quick questions: 1. Do you prefer stateless JWT-only auth, or DB-backed refresh token rotation? 2. Is RBAC required from day one? 3. Single VM or Docker-based deployment? Best regards, Diah
$500 USD på 7 dage
4,2
4,2

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I recently completed a secure authentication system for a TypeScript backend with PostgreSQL storage and a React frontend, enabling smooth sign-ups and token management. The key to success is designing secure, maintainable authentication flows integrated tightly with PostgreSQL roles and server hardening. Approach: ⭕ Design and implement robust RESTful auth endpoints (sign-up, login, refresh tokens, resets) ⭕ Create PostgreSQL schemas and migrations in TypeScript for consistency ⭕ Harden Linux server with SSL, firewall, and environment secret management ⭕ Deliver complete documentation, scripts, and basic test coverage ❓ Could you share any existing infrastructure or preferred tools for deployment? I’m confident I can deliver a secure, clean, and well-documented auth backend for your stack on time and efficiently. Thanks, Nam
$550 USD på 5 dage
3,9
3,9

With my 8 years of experience in IT, I have garnered solid proficiency and a deep understanding of operating systems including Linux, which makes me aptly adaptable to the stack for your secure authentication REST backend. I am well-versed in TypeScript, Node.js, and PostgreSQL - all essential tools for designing and implementing a robust user authentication system in your project.
$500 USD på 7 dage
4,0
4,0

**DO NOT PAY ME UNTIL I COMPLETE! :)** Hello my valuable client :) My profile is new over here but I have 7 years of experience in this field. I have completely understood about your project. Also I will provide you free maintenance on your project for 1 year after project completion. I can definitely complete this in your timeframe. Give me one chance to prove myself. Hit the chat button to get started. If you will not like my work then you dont need to pay me any money so dont worry and have faith in me :) I am eagerly waiting for your message.
$251 USD på 7 dage
3,8
3,8

Hello, I have reviewed the details of your project. i will create a complete authentication system using typescript and postgresql that handles sign-up, login, password resets, and refresh tokens with secure hashing and token management. i will design a clean rest api for the react frontend with clear routes and request validations, and write typescript migrations for postgresql to define user tables, roles, and permissions. the linux server will be configured with ssl, firewalls, environment variables, and hardened postgres roles to meet security standards. i will add unit and integration tests for all critical auth flows and document every endpoint, database schema, and server configuration for easy replication. iterative checks will ensure performance is fast, code is readable, and the system passes security audits. Let's have a detailed discussion, as it will help me give you a complete plan, including a timeline and estimated budget. I will share my portfolio in chat I look forward to hear from you. Thanks Best Regards, Mughira
$500 USD på 7 dage
3,9
3,9

I can design and implement a secure, production-grade authentication layer in TypeScript that integrates cleanly with your React front end and PostgreSQL backend. I’ll build a RESTful auth system covering sign-up, login, refresh tokens (rotation + revocation), password reset flows, and secure session handling using JWT with proper expiration and storage strategy. Passwords will be hashed with bcrypt/argon2, and all endpoints will include structured validation and rate limiting. On the database side, I’ll define a clean PostgreSQL schema with migrations written in TypeScript (e.g., via Prisma, Drizzle, or Knex), including proper indexing and role separation. Server hardening will include SSL enforcement, firewall configuration (UFW/iptables), secure environment variable management, restricted PostgreSQL roles, and Linux best-practice security settings to prepare for audits. You’ll receive documented endpoints (OpenAPI), reproducible deployment steps, configuration scripts, and a focused test suite covering critical authentication flows. My approach prioritizes security, performance, and maintainable code—so your foundation is solid before scaling further.
$500 USD på 7 dage
4,0
4,0

Hi, Building a rock-solid auth layer in TypeScript + Node.js + PostgreSQL on Linux is exactly my wheelhouse. I've delivered secure REST API backends with JWT/refresh-token flows, SSL hardening, and PostgreSQL role-based access for production services. What I'll deliver: ✅ Full auth system: sign-up, login, refresh tokens, password reset ✅ PostgreSQL schema + TypeScript migrations (Prisma or Knex) ✅ RESTful endpoints, fully documented (OpenAPI/Swagger) ✅ Server hardening: SSL, firewall rules, env secrets management ✅ Fine-tuned PostgreSQL roles and connection security ✅ Basic test suite covering critical auth paths ✅ Clean setup/deployment instructions for your Linux server The code will be clean, readable TypeScript that your React front-end can consume immediately. I prioritize security-first implementation with audit-ready structure. Ready to start immediately! Best, Friends4it Team --- ? CLARIFICATION BOARD 1. Are you using a specific Linux distro (Ubuntu, CentOS)? 2. Do you prefer JWT (stateless) or session-based auth? 3. Should the auth system support OAuth (Google/GitHub login) or email/password only? 4. What ORM/query builder preference: Prisma, TypeORM, or Knex? Let's build a bulletproof auth layer!
$350 USD på 7 dage
3,6
3,6

Hello, I hope you are doing well. I’m a solo backend developer focused on secure, scalable authentication layers using TypeScript, PostgreSQL, and Linux deployments. I design APIs that are clean, well-documented, and production-ready, with performance and maintainability in mind. In past work, I’ve built and tuned auth flows (signup, login, refresh, password reset) with JWT and refresh token rotation, written PostgreSQL schemas and migrations in TS tooling, and hardened server configs, all with thorough tests and clear docs. I can own this end-to-end, deliver secure, documented REST endpoints, migrations, config scripts, and a runnable setup guide, with a simple test suite. I’ll align with SSL, firewalls, secrets management, and audit-ready hardening. Best regards, Billy Bryan
$450 USD på 3 dage
3,6
3,6

HELLO, HOPE YOU ARE DOING WELL! You are building a service needing a robust authentication layer and I can deliver exactly what you require. My expertise covers all aspects of designing and implementing secure user authentication systems, along with managing performance and code readability. My plan involves creating fully documented REST endpoints, applying tight security measures on the server, and ensuring everything functions seamlessly with PostgreSQL and Linux. I'd like to have a chat with you at least so I can demonstrate my abilities and prove that I'm the best fit for this project. Warm regards, Natan.
$500 USD på 7 dage
3,2
3,2

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