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I’m building a green-field, multi-tenant SaaS platform and need senior engineers who can take a feature from idea all the way to a securely deployed, tested release. The stack is React / [login to view URL] with TypeScript on the front end, FastAPI with Python on the back end, and PostgreSQL underneath, so you’ll need to be comfortable moving across all three layers as well as CI/CD, security hardening and automated testing. Because this is a brand-new startup, nothing exists yet—every architectural decision, migration strategy and coding standard we put in place now will shape the product for years. Your experience designing enterprise-grade B2B software such as ERP, CRM, MDM, workflow, supply-chain or compliance tools will be invaluable, especially if you have handled strict data-segregation and tenant-governance requirements before. Initial focus The first milestone centres on Configurable Forms & Workflows. Within that scope, these elements are non-negotiable: • Custom form fields and validation • Automated workflow rules and triggers • User roles and approvals You’ll design the domain model, API endpoints, React components, background workers and permission logic that make those capabilities feel seamless to end users and easily extendable for future modules like dashboards, governed AI and third-party integrations. What I’d like to see from you • A brief rundown of enterprise products you personally built, the exact pieces you owned and the tech you used • Specifics on any multi-tenant or role-based access control work • Typical availability (hours per week) and preferred monthly rate • Links to repos, screenshots or docs that validate your contributions (NDA-safe, of course) I value clean, well-documented code, thoughtful testing strategies and pragmatic security. If you can demonstrate that mindset—and have the full-stack chops to prove it—let’s talk.
Project ID: 40622865
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88 freelancers are bidding on average ₹383,173 INR for this job

As a seasoned veteran with over 18 years in the industry, I have amassed a skill set that fits your project requirements like a glove. My proficiency in PHP and Python is the ideal match for building the infrastructure of your SaaS platform. This expertise extends throughout all stages, from design to deployment, ensuring that my part in the process is seamless and top-notch. But my proficiency doesn't stop there. My prior experience across an array of technologies also makes me agile enough to adapt as needed, which aligns perfectly with your need for a full-stack developer. My previous work includes multiple renowned enterprise products, some developed specifically for sectors including HR, CRM, and SCM which makes me-appropriate for the task at hand. Furthermore, my familiarity with role-based access control systems will be invaluable for addressing your data segregation and tenant governance requirements. Lastly, it’s worth noting that both quality control and security are top priorities for me. Hence, you can rest assured knowing every line of my code is well-documented and thoroughly tested. Considering your emphasis on these aspects too, I believe I make a great fit for your team. Prioritizing clean code practices meshes well with my philosophy of delivering projects that are high-functioning, efficient and easily maintainable. So let's pair våup conjectures-of creativity and professionalism to build something extraordinary.
₹375,000 INR in 45 days
9.0
9.0

Hi, I checked your "Full-Stack Engineers for SaaS Platform" project and it looks like understanding the existing workflow will be important before making any changes. I've worked on similar PHP projects involving php, javascript, python, software architecture, postgresql, full stack development, security, api development, ci/cd, fastapi and prefer delivering work in small milestones so everything stays easy to review and adjust if needed. If you can share a few more details about the current setup and expected outcome, I'll suggest the best approach and provide an accurate timeline. ⭐ 5.0/5 from a recent client: "Project was delivered before Time with Best professional Knowledge One could ever held. Thanks for the support" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
₹300,000 INR in 62 days
7.7
7.7

Your tenant-isolation strategy will determine whether you can safely scale beyond 100 customers without a complete re-architecture. Most teams discover too late that shared-schema designs create compliance nightmares when enterprise clients demand data residency guarantees. Quick questions - are you planning row-level security in PostgreSQL or separate schemas per tenant? And what's your target for concurrent form submissions before you need horizontal scaling? Here is the architectural approach: - FASTAPI + POSTGRESQL: Build a schema-per-tenant model with connection pooling that isolates data at the database layer, preventing cross-tenant leaks and enabling per-client backup policies. - CONFIGURABLE FORMS & WORKFLOWS: Design a JSON-schema-driven form engine with Pydantic validation that stores field definitions in PostgreSQL JSONB columns, allowing non-developers to create forms without code deployments. - CI/CD + SECURITY: Implement GitHub Actions pipelines with automated Pytest coverage, OWASP dependency scanning and zero-downtime blue-green deployments to staging and production environments. I've architected three multi-tenant B2B platforms that scaled from pilot to 500+ enterprise customers, including a workflow automation tool processing 2M transactions monthly. Let's schedule a 20-minute technical call to align on your tenant-isolation model before you commit to a schema design.
₹337,500 INR in 30 days
7.3
7.3

Having garnered 8+ years of industry experience in Full Stack Development, API Development and more, I am confident in my ability to successfully deliver on your green-field, multi-tenant SaaS platform project. My extensive experience in Custom Website Development with React, backed by a solid understanding of JavaScript and CI/CD practices, aligns well with your technology stack requirements. Specifically, my expertise in FastAPI with Python and PostgreSQL can create the required background workers and permission logic for smooth user experiences within your Configurable Forms & Workflows specifications. Additionally, my work on AI Solutions & Business Automation makes me uniquely capable of effectively integrating governed AI components into your future modules. As always, a deep commitment to clean code, comprehensive testing strategies and stringent security protocols underscore my approach to every project.
₹375,000 INR in 15 days
6.4
6.4

I recently helped a B2B SaaS client build a multi-tenant compliance tool with complex role-based access control and strict tenant data segregation. I owned the full-stack design and deployment for their configurable workflows and dynamic form components using React and FastAPI, similar to your setup. For your Configurable Forms & Workflows milestone, I would start by designing a flexible domain model that separates tenant data cleanly and supports fine-grained permissions for user roles and approvals. This will prevent common pitfalls like data bleed and overly complex mutations later. On the frontend, anticipating the need for reusable, validated form fields will keep UI code manageable and extensible. Have you considered how you want to version workflow rules as they evolve? Setting up automated tests for triggers and permissions early will save headaches. Also, what CI/CD stack are you leaning toward? I’ve integrated security checks and automated deployments via GitHub Actions and Docker in past projects, helping maintain reliable releases from day one. I can dedicate 20-25 hrs/week to start, focusing on clean, secure code and well-documented APIs that others can easily build on. I’m ready to dive into your repo and architecture decisions whenever you are.
₹250,000 INR in 7 days
6.0
6.0

Dear Client, I read "Full-Stack Engineers for SaaS Platform" carefully and understand what you're looking to achieve with this Mern Stack Development project. My hands-on experience with PHP, JavaScript, Python, PostgreSQL, Full Stack Development, API Development aligns directly with what you need. I've delivered similar Mern Stack Development work end to end — clean, scalable and on time — and I can share closely related samples and start right away. A few quick questions to get us started: 1. Do you have detailed requirements ready, or should we define the scope together? 2. What's your target timeline for the first working version? 3. Are there existing designs, code or systems I should build on? Thanks & Regards, Deepak
₹325,000 INR in 30 days
5.8
5.8

With over seven years of experience under my belt and more than 575 successful projects completed, I bring to the table a robust and multifaceted skill-set. My team at Techindika has an enviable track record in conceptualizing, architecting and implementing mission-critical software projects, that scale into our clients' core business - very much in line with your bespoke SaaS platform requirements. We have not just worked on generic multi-tenant SaaS systems, but successfully delivered complex projects with credit-based billing, role-based access controls, and solid audit trails. When it comes to clean code, comprehensive testing strategies, and pragmatic security measures, my team does not compromise. We design from day one with scaling potential. Additionally, supported by my multi-cultural team and spread across different timezones in US, UK, Canada & IN we can offer the much needed flexible working pattern - to be available when you need us. As a person who believes in "challenge→solution→outcome" approach before we write a single line of code, the fact that you are kick-starting a greenfield project is pretty exciting for me. It aligns well with how we usually begin nuestros proyectos. We would not simply show up consumed by an idea to learn on your time rather come ready~- having already mapped out the domain and thoroughly audited~\_ the stack.
₹375,000 INR in 7 days
5.3
5.3

Hi! I read that you're building a green-field, multi-tenant SaaS platform starting with Configurable Forms & Workflows custom fields, validation, automated rules, roles and approvals. I have 8+ years of real-time IT experience architecting enterprise B2B platforms, with 5-6 years hands-on in React and TypeScript. My core strength is multi-tenant architecture with strict data-segregation and tenant-governance, I've built configurable workflow engines, dynamic form builders, and granular role/permission systems across multi-tenant SaaS, healthcare, and hospital management platforms. I understand exactly what you mean by making these capabilities extendable designing the domain model and permission logic upfront so dashboards, integrations, and future modules plug in cleanly later. I'd like to be upfront: my backend depth is primarily .NET Core, not FastAPI/Python. I'm confident I can ramp up quickly given the architectural overlap, and I'm happy to discuss fit before committing to hours and rate. Let's connect to talk scope and availability. Akshay B.
₹2,250,000 INR in 7 days
5.0
5.0

Hi, I’m Dhyan Moradiya, a professional specialized in Front-end development(Angular, React JS, etc.) and back-end development (.NET, NodeJS., Django, Laravel). I’m excited to help with your project. I have worked on CMS, CRM, ERP, POS, Inventory management systems, restaurant management systems, and more, ensuring smooth functionality, user-friendly design, and bug-free code. Proven experience with CRM, ERP, real-time monitoring, APIs, and security. Familiarity with scalable solutions for apps similar to yours. Timely delivery without compromising on quality. Let’s connect to discuss your requirements in detail. I’m eager to understand your vision and create a system that exceeds expectations. Looking forward to hearing from you! Best regards, Dhyan Moradiya
₹400,000 INR in 7 days
2.7
2.7

Hyderabad, India
Member since Jul 23, 2026
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