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Summary We are seeking a Senior Backend Engineer to act as an independent Technical Advisor. Our founder is non-technical and requires an objective audit of the newly developed headless backend to verify code quality, architectural soundness, and milestone completion before releasing development payments. Note: You do not need a background in data science, Bayesian statistics, or R. Your focus will be entirely on the Node.js application layer, database schema, and the systemic integration/wiring. Key Responsibilities: Code Review: Audit the Node.js/Express backend for adherence to modern engineering best practices, scalability, and maintainability. Database Review: Evaluate the Prisma ORM schema and Postgres database design for efficiency and proper relational structuring. Architecture Assessment: Review the integration layer between the Node.js API and the offline/asynchronous R-scoring scripts. Ensure the data handoffs are robust and secure. Security & Error Handling: Check middleware implementations (auth, validation, rate limiting) for standard security vulnerabilities. Milestone Verification: Compare the codebase and API functionality against a provided list of contract milestones. Reporting: Deliver a concise "Go/No-Go" executive report for the non-technical founder, along with a technical punch list of any required remediations for the lead developer. Requirements: 5+ years of senior-level experience in Backend Software Engineering. Deep expertise in Node.js, [login to view URL], and RESTful API design. Strong experience with Prisma ORM and PostgreSQL. Familiarity with application architectures that integrate external analytical pipelines or microservices. Excellent communication skills, specifically the ability to translate technical concepts into clear, actionable advice for non-technical stakeholders. Deliverables: A technical audit document detailing code quality, security posture, and architectural health. A formal recommendation on whether the current deliverables meet the criteria for milestone payment.
Project ID: 40374782
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206 freelancers are bidding on average $2,612 USD for this job

Hi, I can act as an independent technical advisor to review your Node.js backend and provide a clear, objective assessment of its quality, architecture, and milestone readiness. I will conduct a full audit of the Node.js/Express application layer, focusing on code structure, maintainability, scalability, and adherence to modern backend best practices. I will also review your Prisma ORM schema and PostgreSQL database design to ensure proper relational structure, efficiency, and consistency with expected data flows. Special attention will be given to the integration layer between the API and external/asynchronous R-scoring processes to verify that data handoffs are secure, reliable, and correctly implemented. I will evaluate authentication, validation, middleware, and rate-limiting logic to identify any security gaps or potential vulnerabilities. In addition, I will map the delivered codebase against your defined milestones and provide a clear Go/No-Go recommendation for milestone payment approval. The final deliverable will include a concise executive summary for non-technical stakeholders along with a detailed technical punch list for your development team to act on. Budget and timeline can be discussed based on codebase size and access scope. Warm regards, Harpreet Singh
$500 USD in 5 days
9.4
9.4

With over a decade of experience in full-stack architecture and high-scale systems, I understand the critical need for a thorough code audit for your Node.js backend project. As you seek a Senior Backend Engineer to provide an objective evaluation of code quality and architectural soundness, my background in building and scaling high-security systems for over 1 million users positions me well to address the challenges of verifying milestone completion. My strategic insight for this audit involves a meticulous review of the Node.js backend, Prisma ORM schema, and database design to ensure efficiency and scalability. Drawing from my past success in delivering secure and maintainable solutions, I am confident in my ability to assess the integration layer and middleware implementations to meet modern engineering best practices. I invite you to take action and reach out to me to discuss further how I can support your project goals and ensure a successful outcome.
$4,000 USD in 45 days
8.5
8.5

Hi, I can act as your independent Technical Advisor and provide a clear, objective audit of your backend before milestone payments are released. I have 5+ years of experience working with Node.js, Express, Prisma, and PostgreSQL, including reviewing production systems for scalability, security, and maintainability. I’ve also worked on architectures integrating external processing pipelines, so I can assess your Node ↔ R workflow reliability and data handoffs. What I’ll deliver: • Full code audit (structure, best practices, scalability) • Prisma schema & database design review • Security checks (auth, validation, rate limiting, error handling) • Architecture assessment (API + external pipeline integration) • Milestone verification against your contract • Clear Go / No-Go report for you + technical fix list for your developer I specialize in translating technical findings into simple, actionable insights for non-technical stakeholders, so you can make confident decisions. Ready to review your codebase and provide an unbiased assessment. Thank you Jennifer
$2,550 USD in 7 days
8.3
8.3

Hi, This is Elias from Miami. I checked your project description and understand you’re looking for a Senior Backend Engineer to provide technical advice and conduct a code audit. This will help ensure your backend systems are efficient and secure. I’ve worked on similar backend projects, focusing on database design and RESTful API development, which has given me insights into common pitfalls and best practices. I’d be happy to go through the details and suggest the best technical approach. I have a few questions to get a better understanding: Q1 – What specific areas of the code are you most concerned about regarding the audit? Q2 – Are there any existing systems or frameworks in place that I should be aware of? Q3 – What is your preferred timeline for the audit and subsequent recommendations? Looking forward to hearing from you.
$3,000 USD in 30 days
7.9
7.9

I understand you need a Senior Backend Engineer to conduct an audit of your Node.js backend, database schema, and architectural integration. My 5+ years of experience in Backend Software Engineering, expertise in Node.js, Prisma ORM, and PostgreSQL make me well-equipped for this task. I will deliver a detailed technical audit report and provide recommendations for milestone payments. Let's discuss the project scope further to adjust the budget accordingly. Please review my profile for assurance of quality work. Let's start this project together.
$2,450 USD in 25 days
7.8
7.8

Hi there, I am a senior full-stack developer with over a decade of experience, mostly working on Node.js, Express, and PostgreSQL-based systems, and I can act as your independent technical advisor to review and validate your backend before any milestone payments. I understand you need an objective audit of the existing codebase, including API layer, Prisma schema, database design, and how everything is integrated with the external R-based scoring system. Once you share your existing codebase, milestones, and access details, I will thoroughly review the backend structure, database schema, security layers (auth, validation, rate limiting), and overall architecture to identify any gaps, risks, or improvements needed. Then I will prepare a clear audit report covering code quality, scalability, and security along with a simple Go/No-Go recommendation, and also provide a technical checklist of fixes so your developer can address them easily. I would request to connect once so I can understand your expectations and start the review process. Thanks, Rahul A.
$800 USD in 7 days
8.0
8.0

Hello, I understand you need a senior backend engineer to review your headless backend system before you release development payments. I will carefully check the Node.js/Express code for best practices, scalability, and maintainability. I will also look at the Prisma ORM schema and PostgreSQL database design to ensure everything is efficient and properly structured. I will review how the Node.js API connects to your external R-scoring scripts to make sure data flows securely and correctly. Middleware like auth and rate limiting will be tested for security vulnerabilities. Finally, I will verify the milestones against your contract and provide you with a simple, clear report showing whether the work meets expectations and any improvements needed. This approach makes sure you get an honest assessment suitable even if you aren’t technical yourself. Could you please share the specific milestone list and contract details for the audit? Thanks,
$5,000 USD in 14 days
7.4
7.4

Hi I can act as an independent technical advisor to audit the backend objectively and determine whether the current deliverables are truly ready for milestone approval. My experience with Node.js, Express, Prisma, PostgreSQL, REST API architecture, backend security, and system audits aligns directly with the scope you described. A major risk in projects like this is that a backend can appear functionally complete while still having architectural gaps, weak error handling, insecure middleware, or incomplete milestone coverage. I would solve that by reviewing the codebase, Prisma schema, API structure, and the integration layer to the asynchronous R-scoring workflow, then translating the findings into a clear Go/No-Go recommendation. I’m comfortable assessing maintainability, database design, security posture, data handoff reliability, and contract milestone alignment without getting distracted by the underlying statistical model itself. The final output would include both an executive-level summary for the founder and a technical remediation list the lead developer can act on directly. This would give you an objective checkpoint before releasing payment, with clear reasoning and practical next steps. Thanks, Hercules
$5,000 USD in 20 days
6.8
6.8

Hello!! " Senior Backend Engineer for Code Audit I am a honest dedicated full time developer. "I read your requirements carefully and understood very well about the project scope and start working accordingly in stages. I am having more then 10+ years of experienced in programming and i believe that i can start working step by step and achieve the project goal in short time frame. I would approach your project by starting with wireframes and getting the UI/UX design completed, before starting the actual development phase. We'll provide You high Quality Design and development for you with unlimited changes in design. I am available on desk as per your convenient time zone and will work on your project until you satisfied with my work. Awaiting your positive response. Thanks
$500 USD in 7 days
7.1
7.1

Hi, As per my understanding: you need an independent audit of a Node.js backend, validating architecture, Prisma schema, security, and milestone delivery with a clear Go/No-Go report. I will share my portfolio on your first message. * Codebase, API & middleware audit * DB schema & query review * Integration + security checks * Clear report with action items Queries: access to repo/docs? milestone checklist? I will be looking forward to hearing from you. Kindest Regards
$2,800 USD in 45 days
6.7
6.7

I’ll give you an objective, founder-friendly verdict on whether this backend is truly ready for milestone payment — not just “looks good” on the surface. I’m a senior backend engineer with 10+ years auditing Node.js/Express systems, Prisma/PostgreSQL schemas, and API integrations where reliability, security, and delivery status need to be verified independently. This project is a strong fit because you need both a technical deep dive and a clear Go/No-Go recommendation for a non-technical decision maker. Key strengths I bring: - Node.js/Express code review focused on architecture, maintainability, validation, auth, and error handling - Prisma + PostgreSQL schema review for relational design, efficiency, and data integrity - Integration audit of the API-to-R pipeline to confirm handoffs, async flow, and failure handling My approach: I’ll review the codebase against your milestone list, inspect the API and database layer, test critical flows, identify risks or missing deliverables, and deliver two outputs: a concise executive audit for the founder and a technical punch list for the lead developer. If you’d like, I can start with a rapid discovery call and confirm scope before auditing the codebase.
$3,500 USD in 365 days
6.8
6.8

Hi, I can provide an independent, senior-level audit of your Node.js backend to give you a clear Go/No-Go decision with full confidence. I’ll review code quality, architecture, Prisma/PostgreSQL schema, and the integration with your R-based pipeline—focusing on scalability, maintainability, and security (auth, validation, rate limiting, error handling). I’ll also verify all deliverables against your milestone criteria. You’ll receive: A clear executive summary (non-technical) A technical audit report with actionable fixes A final recommendation on whether to release payment I’ve worked on backend audits and system reviews, translating complex findings into practical decisions for founders. Ready to assist.
$2,500 USD in 5 days
5.9
5.9

I can conduct a focused, objective audit of your Node.js/Express backend and Prisma/Postgres setup to verify code quality and architecture before releasing payments. In a recent review for a SaaS startup’s API, I identified critical security gaps in middleware and helped realign their schema for better scalability and maintainability. For your integration with offline R-scoring scripts, I’d specifically check data handoff robustness and error handling to ensure safe and reliable asynchronous flows. Do you currently have automated tests covering the integration points or error scenarios? Also, how are you managing auth tokens or rate limits in middleware—any custom logic? I’ll deliver a clear Go/No-Go summary for your founder that highlights milestone coverage and a punch list focused on immediate fixes your lead dev can implement. This approach has helped previous clients avoid costly post-release issues and payments delays. Ready to start the code and architecture audit as soon as you provide repo access and milestone criteria.
$2,750 USD in 7 days
5.6
5.6

Hello. I will perform an objective audit of your Node.js/Express backend, Prisma/Postgres schema, and the integration with offline R scoring to verify code quality, security, and milestone completion. I will deliver a clear Go/No-Go executive report and a prioritized technical punch list for the lead developer. Thank you, Sherman.
$2,750 USD in 7 days
5.7
5.7

Hello!, I am a US-based senior software engineer with over 15 years of experience in backend development, software architecture, and database design. I carefully read your project description and am excited about the opportunity to act as a technical advisor for your code audit. To ensure I understand your needs fully, could you please clarify the following questions to help me better understand the project? 1. What specific areas of the codebase are you most concerned about during the audit? 2. Are there any existing documentation or guidelines that I should follow while performing the audit? With extensive experience in Node.js, MySQL, and PostgreSQL, I have previously worked on projects such as a custom API for a niche e-commerce platform and a data processing tool that streamlined backend operations for a SaaS startup. My approach focuses on practical, maintainable solutions that align with your goals. To achieve the project’s objectives, I suggest a phased approach: 1. Initial code review and identification of key areas for improvement. 2. Detailed documentation of findings and recommendations. 3. Implementation of necessary changes and optimizations. I'm committed to delivering quality results and ensuring your backend systems operate smoothly and efficiently. Let’s connect to discuss how I can contribute to your project. Best, James Zappi
$3,000 USD in 14 days
5.3
5.3

Hello Founder, I hope you are doing well. I’m a backend engineer with 5+ years of senior-level experience focusing on Node.js, Express, REST APIs, and database design with PostgreSQL and Prisma. I’ve helped technical founders by conducting independent, objective reviews of backend architectures, highlighting code quality, security posture, and scalability implications, and presenting clear, business-friendly recommendations. I will thoroughly audit the Node.js/Express backend, Prisma schema, and the integration layer with external analytic pipelines. You’ll get a concise Go/No-Go executive report for the non-technical founder, plus a technical punch list with remediation steps and concrete priorities for the lead developer. I’ll align the assessment with your milestone criteria and ensure robust data handoffs, security, and error handling. Please feel free to contact me so we can discuss more details. I am looking forward to the chance of working together. Best regards, Billy Bryan
$3,055 USD in 1 day
4.8
4.8

Hello there, I can help as an independent technical advisor to review the backend objectively before any milestone payments are released. With strong experience in Node.js, Express, Prisma, and PostgreSQL, I can audit the codebase for scalability, maintainability, security, API quality, and the integration layer between the backend and the offline R-scoring process. I’ll also compare the delivered functionality against your contract milestones and provide both a non-technical Go/No-Go summary for the founder and a clear technical punch list for the developer. My focus will be on giving you practical, unbiased feedback so you can move forward with confidence. Looking forward for your positive response in the chatbox. Best Regards, Arbaz M
$2,750 USD in 3 days
5.5
5.5

Hi there, I see that you're looking for a Senior Backend Engineer to conduct a thorough code audit of your headless backend. It’s essential to ensure the code quality and architecture are solid before releasing payments, especially since your founder is non-technical. My approach would involve meticulously reviewing your Node.js/Express backend, evaluating the Prisma ORM schema, and assessing the database design to ensure everything is efficient and secure. With 4+ years of experience in backend development, I’m well-versed in Node.js and PostgreSQL, which will help me provide clear, actionable feedback for your team. I can also focus on the integration layer and security aspects to ensure robust data transfers and middleware implementations. One question I have is: what specific milestones do you want me to verify in relation to the codebase and API functionality? Best regards, Arslan Shahid
$2,750 USD in 7 days
4.8
4.8

Hello, I have reviewed the details of your project. i will perform a structured technical audit of your node js and express backend by reviewing the full application layer for code quality, maintainability, and adherence to modern backend standards, focusing on routing structure, service separation, error handling, and validation flow. i will examine the prisma orm schema and postgresql database design to ensure relational integrity, efficient indexing, and proper handling of data relationships across entities. the integration layer between the api and external or asynchronous scoring processes will be reviewed to confirm secure data exchange, correct sequencing, and failure handling. i will also assess authentication middleware, request validation, rate limiting, and general security posture to identify any vulnerabilities or weak points. milestone verification will be done by mapping the existing codebase against your provided requirements list, ensuring each deliverable is correctly reflected in the system. 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
$2,750 USD in 7 days
4.8
4.8

Releasing payments without confidence in your backend is a big risk, especially when the technical details are overwhelming and you need clear, unbiased answers. It is stressful not knowing if your Node.js backend, Prisma schema, and database setup actually meet your contract milestones and are built to last. You can expect a straightforward audit that gives you a clear Go or No-Go answer, along with a punch list of fixes, so you can move forward confidently. First, I will comb through your Node.js code, database, and integration points. Next, I will check the security, middleware, and milestone alignment. Finally, I will deliver an executive summary that is easy to act on, even without technical know-how. Is there a deadline you are hoping to hit for this executive report?
$2,694 USD in 7 days
4.7
4.7

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