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OVERVIEW We are a financial services/insurance company operating a mature PHP–MySQL system that has evolved over approximately 25 years. The system supports core insurance operations, including: * Client management * Policy administration * Premium collection * Claims processing Due to its long evolution, the system lacks comprehensive technical documentation. We are looking for a highly experienced developer or small specialist team to reverse-engineer and document the system so that new developers can quickly understand and work on it. This is NOT a basic PHP job. We are specifically looking for someone experienced in analysing and documenting complex legacy systems who will get limited assistance/guidance from our current developer. OBJECTIVE Produce a complete, structured System Blueprint that clearly explains: * system architecture * database relationships * module structure * code dependencies * business processes SCOPE OF WORK You will work on a sanitised copy of the system (no production access). Your responsibilities include: 1. System Architecture Analysis * Analyse the PHP codebase * Identify structure and layers * Produce architecture diagrams 2. Database Reverse Engineering * Analyse MySQL database * Create ER diagrams * Document table relationships 3. Module Mapping * Identify core modules (clients, policies, premiums, claims, etc.) * Map scripts to modules 4. Code & Dependency Mapping * Identify file dependencies (includes/requires) * Map which scripts interact with which database tables 5. Business Process Mapping Document flows such as: * client onboarding * policy creation * premium calculation and collection * claims processing 6. Legacy System Audit * Identify unused modules/scripts * Highlight risks or inconsistencies DELIVERABLES (Required) 1. System Architecture Diagram (high-level + detailed) 2. Database Documentation (ER diagrams + table descriptions) 3. Module Map (clearly structured) 4. Script-to-Database Mapping 5. Business Process Flow Diagrams 6. Developer Onboarding Guide 7. Legacy Risk / Observations Report SECURITY & ACCESS (Important) * You will NOT have access to production systems * You will NOT receive real database credentials * All work will be done on a sanitised copy of the system * All client/personal data is anonymised You will be required to sign: * NDA (Non-Disclosure Agreement) * Contractor Agreement with confidentiality provisions REQUIRED EXPERIENCE * Strong PHP (including legacy PHP systems) * Strong MySQL / relational database experience * Experience reverse-engineering undocumented systems * Experience producing technical documentation PREFERRED EXPERIENCE * Financial services / insurance systems * Large or long-running systems (10+ years old) * Familiarity with tools such as: * PHPStan / PhpDepend * SchemaSpy / MySQL Workbench * Documentation frameworks THIS PROJECT IS NOT SUITABLE FOR * Junior developers * Basic website developers * WordPress-only experience PROJECT STRUCTURE Milestone-based: * Phase/Milestone 1: Architecture + database diagrams * Phase/Milestone 2: Module mapping + dependency analysis * Phase/Milestone 3: Full documentation + onboarding guide Estimated duration: 1–2 weeks depending on the Ai tools used and the developer's experience. Payment will be made as follows: Of the agreed fee, 30% each for phase 1 and 2 on completion and 40% on the completion of phase 3. After each phase/milestone has been reached our current developer will advise on the work done and if what has been done is sufficient and correct. Payment for that phase/milestone will then be released. TO APPLY (Required) Please include the following in your proposal: 1. Examples of similar legacy systems you have analysed or documented 2. The tools and methodology you would use 3. A brief explanation of how you would map PHP scripts to database tables 4. Your estimated timeline Applications that do not address the above will not be considered. You can send it privately once we contact you. ALSO, ALL DEVELOPERS WHO I CONTACT WILL BE EXPECTED TO ANSWER THIS QUESTION (Mandatory) Describe how you would safely analyse a legacy PHP system WITHOUT access to production data and how you would identify which scripts interact with which database tables. If you have read the above project description then please put the letters MUL on the first line of your bid.
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With over 7 years in the industry as a Full-Stack Web Developer, I've accumulated a wealth of experience that make me ideal for your project. One of the prime facets of my work has been dealing with complex legacy systems, especially in a financial and insurance context. I've successfully reverse-engineered systems similar to yours and provided comprehensive documentation that ensures seamless transitioning for new developers. Having worked extensively with PHP, MySQL and various related tools like PHPStan, SchemaSpy and MySQL Workbench, allow me to bring a deep understanding into unravelling and mapping your database relationships and architectural flows. Regarding deliverables and project structuring, I work with an effective milestone approach that allows us to build on each phase's important observations effectively. As we progress from Architecture + Database Diagrams all the way through Full Documentation + Onboarding Guide, I will ensure your current developer is consulted at every step for approval. My estimated timeline for this extensive project is 1-2 weeks based on the scale of your system and the efficient tools we use to crawl through it all while maintaining quality standards. Together, in strict accordance to your requirements and budget, we can provide adequate training materials that guarantee easy onboarding processes for new developers.
$500 USD trong 7 ngày
8,8
8,8

I am well-equipped to tackle the "Senior PHP Systems Analyst Needed to Document 25-Year Legacy PHP/MySQL Platform" project. With my expertise in PHP, Software Architecture, MySQL, Software Development, and Data Visualization, I am confident in delivering quality results. Budget flexibility is assured after discussing the full scope. Let's kick-start this project together. Please go through my profile its 15 years old see the work I did over the years. No Win No Fee means that your satisfaction is my utmost priority. Lets discuss the job details. Moreover, I am willing to start the job and perform tasks without even being hired; it is just to show my commitment to this project. Looking forward to hear from you.
$525 USD trong 10 ngày
8,7
8,7

Hello there, I am thrilled to submit my proposal for your project involving reverse-engineering and documenting your mature PHP-MySQL system that supports core insurance operations. With over [X years] of experience in analyzing and documenting complex legacy systems, my team and I are well-equipped to deliver a comprehensive System Blueprint detailing system architecture, database relationships, module structure, code dependencies, and business processes. Our approach will involve working on a sanitized copy of the system to ensure data security while conducting system architecture analysis and database reverse engineering to meet your objectives effectively. Regards, Yogesh Kumar
$560 USD trong 7 ngày
8,4
8,4

MUL Hi, I can help thoroughly analyze and document your 25-year legacy platform to create a clear System Blueprint for new developers. I’ve successfully reverse-engineered complex legacy systems before, producing detailed architecture diagrams and comprehensive documentation. My approach includes using analysis tools like PHPStan for code assessment and MySQL Workbench for ER diagrams, ensuring clarity in module and process mapping. For script-to-database mapping, I would identify dependencies by analyzing includes and requires in your codebase, creating a thorough list of interactions. I estimate a timeline of 1-2 weeks for complete documentation, structured through milestones to ensure clarity. Looking forward to discussing how we can move forward! I have strong expertise in legacy PHP systems and MySQL. Best, Priyanka
$750 USD trong 7 ngày
8,4
8,4

Senior PHP Systems Analyst Needed to Document 25-Year Legacy PHP/MySQL Platform (Architecture + Database + Flows)GET clear communication------creative thinking-----Reliable delivery without constant follow-ups I am highly appreciative to work on this specific task I can do my best. I am an Innovative PHP/Full stack developer having rich experience with so many successful Tasks. Let’s connect on chat for further discussion and start quickly. Thanks!!
$500 USD trong 7 ngày
8,1
8,1

MUL I can help with this, I will reverse-engineer your 25-year PHP/MySQL platform and deliver the full blueprint — architecture diagrams, ER models, module maps, script-to-database mappings, business process flows, and a developer onboarding guide. For script-to-table mapping, I will use static analysis (grep for query patterns, trace includes/requires) combined with PHPStan for dependency resolution and MySQL Workbench for ER generation. This approach works reliably on sanitised copies without needing production access. Questions: 1) Roughly how many PHP files and database tables are we looking at? 2) Is there any existing documentation, even partial, or are we starting from zero? 3) Do you have a preferred format for deliverables (Confluence, PDF, Markdown)? Looking forward to talking through the details. Kamran
$270 USD trong 10 ngày
8,4
8,4

⭐⭐⭐⭐⭐ Reverse-Engineer and Document Complex Legacy PHP-MySQL Systems ❇️ Hi My Friend, Hope you are doing well. I reviewed your project and see you are looking for a developer to analyze and document your legacy PHP-MySQL system. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed over 50 projects related to complex systems. I will analyze the system architecture, database relationships, and business processes efficiently, ensuring comprehensive documentation. ➡️ Why Me? I can easily handle your project as I have 5 years of experience in analyzing and documenting legacy systems. My skills include PHP programming, MySQL database management, and technical documentation. I also have a strong grip on tools like PHPStan and MySQL Workbench, which will enhance the quality of my work. ➡️ Let's have a quick chat to discuss your project in detail and I can show you samples of my previous work. Looking forward to chatting with you! ➡️ Skills & Experience: ✅ PHP Development ✅ MySQL Database ✅ System Analysis ✅ Technical Documentation ✅ Legacy Systems ✅ ER Diagrams ✅ Code Mapping ✅ Module Mapping ✅ Business Process Flow ✅ Risk Assessment ✅ Documentation Frameworks ✅ Software Architecture Waiting for your response! Best Regards, Zohaib
$350 USD trong 2 ngày
8,0
8,0

Hi , I understand you need a detailed, clear documentation of your 25-year legacy PHP/MySQL system covering architecture, database, modules, code dependencies, and business processes. With extensive experience in reverse-engineering complex legacy financial systems and expertise in PHP and MySQL, I will produce comprehensive architecture diagrams, ER diagrams, module and dependency maps, and business flow documentation to onboard new developers smoothly. I utilize tools like PHPStan, MySQL Workbench, and documentation frameworks to ensure accuracy and clarity. I estimate 14 days to complete all three phases as per your milestone structure, working closely with your current developer to validate deliverables. How have you managed sanitising your system copy to ensure developer safety while preserving enough data integrity for effective analysis? Best regards, Muhammad
$750 USD trong 14 ngày
8,2
8,2

Hi, I have strong experience working with legacy PHP and MySQL systems and can help document your 25-year-old insurance platform. Using the provided sanitized copy, I will analyze the code, map modules, identify database relationships, and create architecture diagrams, ER diagrams, and business process flows. I will also produce a clear developer onboarding guide and highlight any risks or unused scripts. To safely analyze the system without production data, I will trace PHP scripts to see which tables they use and map all dependencies, working entirely on the anonymized environment. I use tools like PHPStan, MySQL Workbench, and documentation frameworks to organize everything clearly. Thankyou, Azad
$250 USD trong 7 ngày
7,7
7,7

MUL Hello! I understand you need an expert to dive deep into your 25-year-old PHP/MySQL insurance platform to produce clear and detailed documentation. I will start by carefully analyzing the PHP codebase and database structure using tools like MySQL Workbench and PHPStan to create architecture and ER diagrams. I'll map out the core modules, script dependencies, and how each script interacts with database tables. Then, I’ll document the main business flows like client onboarding and claims processing so new developers can quickly get up to speed. I’ll also identify any unused parts or risks in the system. Since I’ll only work on sanitized data, I’ll implement safe practices for testing without real production info. I’ll deliver all diagrams and reports clearly organized for easy reference. To get the best results, I’d like to know: What current tools or documentation exist for this system? Are there any specific business processes or modules you want detailed priority on? How large is the sanitized copy of the system in terms of files and database size? Which format do you prefer for the final documentation (PDF, online wiki, etc.)? What timeline do you expect for the completion of each milestone? What are the main challenges your current developer faces when explaining the system to new developers? Thanks,
$750 USD trong 24 ngày
7,4
7,4

HI! I am an expert web programmer. I have a lot of work experience in Laravel, Codeigniter, PHP, Wordpress, JavaScript, HTML, Vuejs, Reactjs, React Native, and MySQL. I can start right away. I want to discuss this project in detail. Please contact me to discuss more regarding this project. For more details Chat with me
$400 USD trong 7 ngày
7,5
7,5

Hi I read full requirements from top to bottom. I will show you many examples with codes I am ready to start from now, I am ready for any test without any cost. Please have a look about my profile about my review and rating, https://www.freelancer.com/u/webmaestro2013/ I know PHP MYSQL, MVC framwork and js very well .I have developed backend and front end both. I know PHP, MYSQL, AJAX, javascript , jquery , css, html, xml, js , json, Bootstrap and API implementation PLEASE HAVE A LOOK AT MY PROFILE FOR MORE ABOUT MY RATING AND REVIEWS I have 15+ years of experience in php, mysql, I have done more jobs in the php for both design and functionality. I hope that you will provide this job to me and reply to me as soon as possible for the best services and supports. Thanks & Regards Anita
$500 USD trong 31 ngày
7,3
7,3

Hi, MUL I am writing this bid by myself and am confident in delivering a detailed and structured system blueprint for your 25-year legacy PHP/MySQL platform. Your need for deep analysis and thorough documentation resonates with my extensive experience in reverse-engineering complex legacy systems. With strong skills in PHP and MySQL, I’ll analyze your sanitised codebase and database to produce clear architecture diagrams, ER diagrams, module mappings, and process flows. I’ll use tools like PHPStan, MySQL Workbench, and SchemaSpy to ensure precise dependency mapping and documentation. My approach includes a phased delivery with detailed onboarding guides to enable smooth knowledge transfer. I can start immediately and aim to complete all milestones within the 2-week timeline you’ve outlined for quality results and iterative validation with your current developer. Which specific PHP static analysis or reverse-engineering tools do you currently use or prefer for this project? Also, could you clarify the volume or complexity of business process flows you expect documented? Best regards,
$650 USD trong 14 ngày
6,9
6,9

MUL Hello, I understand you need a Senior PHP Systems Analyst to reverse-engineer and fully document a 25-year legacy PHP/MySQL platform for financial services. I have extensive experience analysing complex legacy systems, producing high-quality architecture diagrams, ER diagrams, module maps, and business process flows. I can create a structured System Blueprint that clearly explains code dependencies, database relationships, module structures, and operational workflows. My approach includes static code analysis using PHPStan and PhpDepend, database inspection with MySQL Workbench or SchemaSpy, and mapping scripts to tables through code parsing and query tracing in the sanitized environment. I will produce high-level and detailed architecture diagrams, module maps, script-to-database mappings, onboarding guides, and a legacy system risk report. All work will be done on anonymized copies without production data. Estimated timeline: Phase 1 (architecture + database) – 4–5 days; Phase 2 (module mapping + dependency) – 4–5 days; Phase 3 (full documentation + onboarding guide) – 3–4 days. I have documented similar multi-decade legacy systems for banking and insurance platforms using these methodologies. Questions: Are there existing unit or integration tests that can be leveraged for mapping script-to-table interactions? Should the business process mapping strictly follow current implementations, or also include suggested improvements? Thanks, Asif
$750 USD trong 11 ngày
6,9
6,9

Hello, MUL. I have extensive experience analyzing legacy PHP systems and producing clear, detailed documentation that supports ongoing development. I would approach your project in phases, starting with in-depth analysis of the architecture and database using tools like MySQL Workbench and PHPStan. Then, I would carefully map PHP scripts to database tables by tracing code dependencies and includes, ensuring accuracy without access to production data. I focus on creating structured diagrams and clear documentation so new developers can quickly understand system flows and risks. My experience with long-running financial systems and strong PHP/MySQL skills align well with your needs. Thanks, Teo
$500 USD trong 5 ngày
6,5
6,5

MUL Hello, I understand you need a Senior PHP Systems Analyst to document a 25-year-old legacy PHP/MySQL platform. I'm confident I can deliver the required System Blueprint, including architecture diagrams, database documentation, module maps, and more. My experience aligns well with the requirements for analyzing and reverse-engineering complex systems. I'm ready to discuss your specific needs. Regards, Parvesh M.
$250 USD trong 3 ngày
6,3
6,3

MUL I'm Iosif Peterfi, 15+ years in building secure, scalable systems with a practical, business-focused approach. This is my speciality turning legacy PHP systems into well-documented blueprints that speed onboarding and reduce risk. I understand you need a seasoned analyst to reverse-engineer a 25-year PHP-MySQL platform, produce a complete System Blueprint, and empower new developers while keeping data safe. I'll deliver a structured, business-focused view covering system architecture, database relationships, module map, code dependencies, and end-to-end business processes. I will work on a sanitised copy, avoid production data, and produce clear diagrams and onboarding guidance to reduce ramp time and risk. A recent engagement with a long-running financial services platform resulted in a 40% faster onboarding for new engineers and a 25% reduction in implementation errors after documentation was handed over. Phase milestones align with your plan: architecture + database diagrams, module mapping + dependencies, full documentation + onboarding guide. I would safely analyse by using sanitised data, high-level traces, and cross-referencing scripts to map interactions to tables, then validate with business process flows. Let's chat - I can walk you through my approach in 15 minutes.
$4.200 USD trong 21 ngày
6,6
6,6

MUL I am an experienced PHP/MySQL developer with a strong background in reverse-engineering and documenting complex legacy systems, including financial and insurance platforms. I can produce a full System Blueprint covering architecture, database ER diagrams, module mapping, code dependencies, and business process flows. I will use tools like PHPStan, PhpDepend, and MySQL Workbench to analyse the sanitized system copy safely, without production access. To map PHP scripts to database tables, I would statically analyse the codebase for queries, includes/requires, and ORM usage, then cross-reference with the database schema to document dependencies. I will deliver detailed architecture diagrams, module maps, process flows, and a developer onboarding guide. Could you confirm the total number of core modules and approximate codebase size to help refine the planning? Also, are there any critical processes that must be prioritised first? With Regards! Abhi
$750 USD trong 7 ngày
6,6
6,6

MUL Hi, I’ve worked on reverse-engineering large legacy PHP–MySQL systems, including finance-related platforms, and understand how to turn undocumented codebases into clear, structured blueprints developers can actually use. Your scope is very aligned with my experience—architecture breakdown, ER modeling, dependency tracing, and mapping real business flows from code. I’d approach this by combining static analysis tools (PHPStan, PhpDepend) with controlled runtime tracing on the sanitized environment to accurately map script-to-database interactions. For safety, I’d rely on code parsing, query logging, and pattern detection (PDO/MySQLi calls, ORM if any) to identify table usage without needing production data. All outputs will be cleanly structured—diagrams, mappings, and an onboarding guide that reduces ramp-up time significantly. I can deliver across your milestones within 1–2 weeks, with clear validation at each phase.
$450 USD trong 7 ngày
6,5
6,5

Coming across the perfect project fits like this is what makes my experience as a seasoned PHP Developer so rewarding. I've spent the past ten years facilitating comprehensive solutions for companies with mature systems like yours. Being well-versed in legacy PHP helps me dive into your 25-year-old system to dissect its crucial elements and produce an absolutely detailed and structured System Blueprint, that's inclusive of system architecture, database relationships, module structure, code dependencies, and business processes just like you've requested. My proficiency in PHP and MySQL database - two major pillars of your system's functionality - further enhances my capability to extract every inch of information for extensive documentation. Having dealt with complex legacy systems before, I'm already accustomed to working with limited guidance and that only increases my value proposition for your project. You'll surely find my reverse engineering skills, documentation abilities, as well as my past successes with similar projects praiseworthy.
$450 USD trong 7 ngày
6,3
6,3

Port Elizabeth, South Africa
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