SaaS Platform Backend Improvement
Budget / SalaryHourly project
TypeFreelance project
LocationRemote
Posted1 hour ago
Secure Multi-Tenant SaaS Backend Redesign
Category: Backend Development / Software Architecture Budget: £1,350 GBP Hourly rate range (if hourly bids considered): $30/hr – $250/hr Project deadline: Tuesday, 6 October 2026
Description: We need an experienced backend engineer to redesign and harden the backend architecture of an existing multi-tenant SaaS platform. The current system needs improved data isolation between tenants, encrypted API endpoints, and a cleaner service layer separating authentication, billing, and core business logic. This is purely backend/infrastructure work — no front-end changes required.
Key requirements:
Strong experience with backend frameworks (Node.js, Django, or Java Spring)
Familiarity with multi-tenant data architecture and encryption best practices
Experience designing secure, versioned REST or GraphQL APIs
Comfortable working against a fixed one-week delivery window
Deliverables:
Revised backend architecture diagram
Refactored authentication and API layer with encryption in transit/at rest
Documentation of security decisions and migration notes
Money-Back Guarantee & Acceptance Terms:
Freelancer's acceptance of these terms. By commencing any work under this project — including, without limitation, accepting the award, confirming a start date, or performing any preparatory or substantive task — the Freelancer is deemed to have read, understood, and irrevocably accepted all terms of this posting in full, including this Money-Back Guarantee & Acceptance Terms clause. Commencement of work by the Freelancer constitutes their binding acceptance of the contract; it is not conditional on any further signature or confirmation.
Milestone release ≠ Client's acceptance of the work. Release of any milestone payment by the Client authorises the Freelancer to commence or continue work only. It does not constitute the Client's acceptance of that work or of the final deliverable. The Client's acceptance of the deliverable occurs solely upon the Client's written confirmation that it conforms to the specification set out in this posting.
Time is of the essence. The Project Deadline stated above (6 October 2026) is a material term of this engagement.
Money-back guarantee. If the completed deliverable(s) are not delivered in full working order by the Project Deadline, and the Client has not granted an express written extension prior to that deadline, the moneyback gurantee clause will be triggered and this contract shall automatically and immediately terminate (become void) without further notice, and the Freelancer shall refund the Client all sums paid under this contract in full within 5 business days of the deadline lapsing.
Extensions. Any extension to the Project Deadline is valid only if agreed in writing (including via the platform's messaging system) by the Client before the original deadline expires. No extension is implied by silence, delay in response, or continued work after the deadline has passed.
No waiver. The Client's acceptance of late or partial work, at its sole discretion, does not waive the Client's rights under this clause in respect of any other milestone or deliverable.
Survival. This clause survives termination of the contract.
Category: Backend Development / Software Architecture Budget: £1,350 GBP Hourly rate range (if hourly bids considered): $30/hr – $250/hr Project deadline: Tuesday, 6 October 2026
Description: We need an experienced backend engineer to redesign and harden the backend architecture of an existing multi-tenant SaaS platform. The current system needs improved data isolation between tenants, encrypted API endpoints, and a cleaner service layer separating authentication, billing, and core business logic. This is purely backend/infrastructure work — no front-end changes required.
Key requirements:
Strong experience with backend frameworks (Node.js, Django, or Java Spring)
Familiarity with multi-tenant data architecture and encryption best practices
Experience designing secure, versioned REST or GraphQL APIs
Comfortable working against a fixed one-week delivery window
Deliverables:
Revised backend architecture diagram
Refactored authentication and API layer with encryption in transit/at rest
Documentation of security decisions and migration notes
Money-Back Guarantee & Acceptance Terms:
Freelancer's acceptance of these terms. By commencing any work under this project — including, without limitation, accepting the award, confirming a start date, or performing any preparatory or substantive task — the Freelancer is deemed to have read, understood, and irrevocably accepted all terms of this posting in full, including this Money-Back Guarantee & Acceptance Terms clause. Commencement of work by the Freelancer constitutes their binding acceptance of the contract; it is not conditional on any further signature or confirmation.
Milestone release ≠ Client's acceptance of the work. Release of any milestone payment by the Client authorises the Freelancer to commence or continue work only. It does not constitute the Client's acceptance of that work or of the final deliverable. The Client's acceptance of the deliverable occurs solely upon the Client's written confirmation that it conforms to the specification set out in this posting.
Time is of the essence. The Project Deadline stated above (6 October 2026) is a material term of this engagement.
Money-back guarantee. If the completed deliverable(s) are not delivered in full working order by the Project Deadline, and the Client has not granted an express written extension prior to that deadline, the moneyback gurantee clause will be triggered and this contract shall automatically and immediately terminate (become void) without further notice, and the Freelancer shall refund the Client all sums paid under this contract in full within 5 business days of the deadline lapsing.
Extensions. Any extension to the Project Deadline is valid only if agreed in writing (including via the platform's messaging system) by the Client before the original deadline expires. No extension is implied by silence, delay in response, or continued work after the deadline has passed.
No waiver. The Client's acceptance of late or partial work, at its sole discretion, does not waive the Client's rights under this clause in respect of any other milestone or deliverable.
Survival. This clause survives termination of the contract.
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