Web Developer for EV Energy Optimization App

@AwaisChaudhry

Hello, I am an individual freelancer ready to take on your fixed-price EV Energy Optimization Web App project. I will thoroughly study the provided Excel reference model, map its true inputs, derived calculations, and KPIs to a clean web architecture, and faithfully translate the logic into TypeScript/JavaScript with an input layer, derived state, and output layer, ensuring the results match the Excel model within tight tolerances. I will implement a deterministic solver to minimize energy cost, maximize EV kilometers, maximize solar self-consumption, or balance objectives, with controls for bidirectional EV share, charging windows, PV sizing, and grid vs self-consumption. I will align all charts with the Excel time-series, provide clean, well-documented code, and deliver a maintainable solution suitable for a potential long-term role. What milestones and acceptance criteria do you expect for the Excel-to-code migration, and could you share the exact Excel version, data ranges, tolerances for numerical accuracy, and any non-negotiable constraints on performance or deployment environment? Best regards,

@divumanocha

Hello, I’m an individual freelancer (no agency, no subcontracting) and this project is very much in my wheelhouse. I have strong experience translating complex Excel-based simulation and optimization models into deterministic, production-grade web applications, particularly in energy, cost optimization, and scenario analysis. I understand that your Excel file is not just a calculator, but the reference truth: with implicit logic, intermediate states, KPIs, and optimization assumptions that must be fully understood and faithfully reproduced. My approach is to treat the Excel model as a specification, not something to “approximate.” How I would approach this Excel reverse-engineering Identify true inputs vs derived values Logic integration Rebuild calculations in code with strict numerical consistency Optimization / solver Implement a deterministic solver (no black-box heuristics) Support objectives such as cost minimization, EV km maximization, solar self-consumption, or weighted trade-offs Charts & profiles Align all time-series and ratios exactly with Excel logic Relevant background JavaScript / TypeScript (frontend and logic-heavy applications) Familiar with EV charging, PV production, grid interaction, and cost optimization Timeline & pricing I prefer to propose a fixed price with milestones after reviewing the Excel model and existing codebase, as quality and correctness are clearly more important than speed here. Best regards,

@extreamcode

Hi, I’ve carefully studied your EV energy optimization project and understand your need for a precise and faithful integration of a complex Excel model into a functional web app. This challenge, blending energy system expertise with high numerical fidelity in JavaScript/TypeScript, aligns perfectly with my skills. I have considerable experience reverse-engineering detailed Excel simulations and translating them into clean, modular code structures that ensure accuracy and maintainability. My approach involves first deeply analyzing the Excel model to document key inputs, calculations, and KPIs, then algorithmically replicating the logic with rigorous validation against Excel results. I will build a deterministic solver tailored to your multifaceted objectives and ensure real-time chart updates reflecting the Excel time-series profile. I work solo, guaranteeing clear communication and focused dedication. I’ve shared an initial estimate of 650 EUR for this fixed-price project, with a timeline of approximately 21 days for comprehensive delivery and thorough testing. Once we review a few technical details and milestones, I’ll finalize the cost and schedule. Could you share more details about the solver’s priority among objectives (cost minimization, EV km maximization, solar consumption) to better tailor the optimization logic? Thanks, Asad

@KESHAVINFOTECH

Hi There, 1. EV Charging & Energy Optimization Web Application – Excel Model Integra... ==> We have got the idea about your project. You need to convert a complex Excel model into your web application, making the app the main tool. We have worked on similar data-heavy projects before. For instance, one of our past projects involved an app that could connect to a users power companys plan and automatically find the cheapest time to charge a vehicle overnight, saving money without any user effort. We see the detailed plan for recreating the Excel logic. We will carefully translate all calculations to ensure the numbers match perfectly. Our plan is to build the code in a clean way with separate layers for inputs, calculations, and the final results. We will also implement the solver so you can balance different goals like saving money or getting the most driving range. ## Queries : 1. Is the Excel models logic purely based on formulas and macros, or are there any external data connections or manual input steps within the spreadsheet that we need to account for? ## Initial Project Structure : - Dashboard - Input Setup - Optimization Controls - Results & Charts - Profile We use advanced AI tools (Cursor, Claude, ChatGPT) to speed up coding and reduce manual work hours. We pass these time-savings to you, providing a high-quality app at a very competitive price. Waiting for your reply. :-) Regards, Ghanu & Samir. KESHAV INFOTECH

@trm66614

Hi there,Good morning I am Talha. I have read you project details i saw you need help with JavaScript, Web Application, Software Engineering, Data Visualization, Data Analysis, Full Stack Development, Frontend Development, Web Development, Excel VB Capabilities and Excel VBA I am pleased to present my proposal, highlighting our extensive experience and proven track record in delivering exceptional results. Our portfolio of success will showcase past projects that demonstrate our ability to meet and exceed client expectations. Glowing testimonials from satisfied clients will attest to our professionalism, dedication, and the quality of our work Please note that the initial bid is an estimate, and the final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please share any available detailed documentation? I'm also open to further discussions to explore specific aspects of the project. Thanks Regards. Talha Ramzan

@durgesh8527

With over a decade of experience as a FULL STACK SOFTWARE ENGINEER, I have developed an unparalleled depth of expertise in numerous programming languages such as JavaScript, TypeScript or myPython. Proficient in frameworks like ReactJS or AngularJS and armed with extensive knowledge in interpreting complex Excel models, I am confident that I can seamlessly integrate the provided model into your application. My work never ends at mere coding; I actively invest my time in understanding the domains my projects live in, from AI text agents to energy systems and EV charging. With this mindset, rest assured that I will not treat your project as a collection of tasks but as the central piece of software supporting your innovative idea. My approach to translating Excel logic into code consists of meticulous analysis of true inputs, derivation of intermediate calculations and final KPIs. By structuring the code into logical layers like input, derived state, and output, I can ensure high numerical accuracy while maintaining excellent efficiency. My vast experience accomplishing fixed-price projects testify my ability to deliver high-quality results within stipulated timeframe. Let's discuss further!

@volodymyrkoval

Hello, I am excited about the opportunity to work on your EV charging and energy optimization application. With over 10 years of experience in web development and a strong proficiency in JavaScript and TypeScript, I’m confident in effectively integrating your complex Excel model into the web app. My solid understanding of energy systems and proven ability to reverse-engineer Excel models allows me to accurately interpret the energy flows and costs. I will ensure high numerical accuracy while reproducing the calculations, allowing for seamless optimization and real-time results updates. I am ready to deliver a high-quality solution that meets your specifications. I can break down milestones for our collaboration and provide an estimated timeline for project completion. Thanks, Volodymyr

@dtk507

Hello! I appreciate your need for a dedicated developer to enhance your EV Charging and Energy Optimization App. With extensive experience in translating complex Excel models into efficient web applications, I have successfully completed similar projects that required meticulous integration of intricate calculations. ✔My Plan: - I will thoroughly analyze your Excel model to map variables accurately. - I'll reproduce all calculations in JavaScript, ensuring high precision. - A deterministic solver will be implemented to optimize energy costs and maximize efficiency. - I’ll align visualizations with Excel time-series logic to provide clear insights. I’m excited about the prospect of contributing to your project and potentially a long-term role with your company! Regards, Davide

@justinw45

Hello Client, thanks for considering my proposal. I have carefully reviewed your project requirements for the EV Energy Optimization App and I am confident in my ability to deliver the desired results. As an individual freelancer with a strong background in JavaScript and TypeScript, I am well-equipped to tackle the task of integrating the complex Excel model into the web application. My expertise in reverse-engineering complex Excel models and my understanding of energy systems and EV charging will ensure a seamless transition of logic into code, with a focus on high numerical accuracy and clear documentation. Throughout the project, I am committed to clear communication and collaboration, ensuring that the final deliverables meet your expectations. I have a proven track record of delivering high-quality, well-documented code and I am dedicated to achieving the objectives outlined in the project description. I am excited about the opportunity to work on this project and potentially establish a long-term partnership with your company. Best regards, Justin

@PMPMPM1985

Hello, I understand you need a web developer to integrate an Excel model into your EV energy optimization app. I'm confident I can help. My experience includes reverse-engineering complex Excel models and translating their logic into clean, accurate code, primarily using JavaScript/TypeScript. I also have a basic understanding of energy systems, EV charging, and PV. I can handle the required logic integration, solver implementation, and chart alignment. I'm an individual freelancer as per your requirement. Regards, Parvesh M.

@andriik18

Hi, I am excited about the opportunity to work on your EV Charging and Energy Optimization web application. With over 7 years of experience in software development, I specialize in integrating complex Excel models into web applications, ensuring high numerical accuracy and clean, maintainable code. I will thoroughly analyze your Excel model, map its logic accurately, and implement a robust solver to optimize energy costs and EV usage. My approach includes meticulous documentation and aligning the application's output with your existing charts. I propose to complete this project within 30 days for a fixed price of 600 EUR. Best regards, Andrii

@GdevDataSceince

Hi there,I am a Data Scientist is a professional responsible for extracting actionable insights and knowledge from large volumes of data Microsoft applications Development. I can write clean, Excel, Word, Access, PowerPoint, Power BI, Outlook and creating VBA macros. Excel: Advanced Array Formulas, Charts, Pivot Tables, Pivot Charts, Mail Merge, VBA Macros, Excel Macros, Capabilities, Spreadsheets. Email through Outlook and Gmail, Add-in, Customized Macros. My top priority is to provide a high quality of work, I am willing to fully devote my time and energy to improve the service offered, with timely, accurate and professional results, building trust and a long term relationship with customer is my main objective. https://www.freelancer.com/u/GdevDataSceince Choosing me for this project not only means benefiting from my extensive skills in Excel and data analysis but also entrusting your sales data with someone who values precision and confidentiality. Let's begin working together on this valuable project to deliver lasting results that will positively impact your business. Thanks Gdev

@maksymh31

Hello, I will reverse-engineer your XLSX reference model and port its full calculation and optimization logic into the web app so the web application becomes the primary calculation engine with results matching the Excel model within tight tolerances. I confirm I am an individual freelancer (no agency). Relevant experience: several years of JS/TS full‑stack work, proven reverse‑engineering of complex Excel energy models and building deterministic solvers for EV/PV systems. My approach: - Extract true inputs, intermediates and KPIs and deliver a mapping document. - Reproduce calculations in TypeScript with clear input → derived state → output layers and unit tests against Excel cases. - Implement a deterministic multi‑objective solver (cost, EV km, self‑consumption) and wire solver outputs to charts so all time‑series align with Excel logic. Milestones (fixed price 650 EUR): 1) XLSX analysis & mapping (3 days) — 150 EUR; 2) Calculation port & tests (7 days) — 300 EUR; 3) Solver + charts integration & QA (4 days) — 200 EUR. To start I need the XLSX file, repo access and sample input cases. Estimated minimum duration 14 days. Can you provide the XLSX model, repository access and a preferred priority for solver objectives (cost / EV km / self‑consumption) for the initial milestone? Best regards,

@ianb65

As a seasoned full-stack engineer with over seven years of experience, I am uniquely suited for your project. I've successfully built many web and mobile applications that demanded complex technical skills - exactly the kind needed for your EV energy optimization app. My proficiency in working with front-end and backend technologies like TypeScript, JavaScript, React.js, Express, NestJS, just to name a few, will make me an asset to your development team. One particular strength is my ability to tackle intricate problems head-on and reverse-engineer complex models. I understand the importance of your Excel model and will thoroughly analyze it to ensure a seamless integration into your web application while maintaining a high level of accuracy. Furthermore, being well-versed in energy systems and familiarity with EV charging and PV will allow me to better grasp the nuances of your project. Another point worth highlighting is my approach to translating Excel logic into code. I don't just replicate the calculations; I work on constructing streamlined and efficient solutions at each step - from analyzing inputs to updating outputs and charts based on solver results. Finally, my commitment lies in delivering clean, well-documented, deterministic code - essential traits for maintaining the stability and scalability of any project in the long-run. So let's collaborate now on this challenging task and see where it might lead us!

@mobiwebsolutions

Hi There!!! The Goal of the project:- Fully integrate the provided Excel-based EV energy optimization model into a web application to accurately reproduce calculations, optimize EV charging, and visualize results in real time. I have carefully read and understood the complete project description and can reverse-engineer the Excel logic into clean, deterministic code while ensuring high numerical accuracy. I am the best fit for this project due to my extensive experience with JavaScript/TypeScript, web applications, and energy system modeling. Three points that directly match the client requirements: 1. Translate complex Excel calculations into web-based code with precise mapping of inputs, intermediate calculations, and KPIs. 2. Implement a solver for EV charging optimization, PV self-consumption, and energy cost minimization. 3. Align all charts and outputs with Excel time-series logic for clear visualization and accurate data representation. I provide basic services including UI design, database management, testing, and full source code delivery at project completion. I have 9+ years experience as a full stack developer and have successfully completed similar projects integrating Excel-based models into web applications for energy and financial systems. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!

@zherukha1

Hello, As a seasoned Full Stack Developer with over 6 years of experience in JavaScript, I believe I am well-suited for your project. I have an impeccable understanding of the web environment, particularly within critical fields like energy optimization and EV charging. My expertise encompasses complex calculations, optimized algorithms, and clean code- an essential quality for faithfully integrating your existing Excel model into your web application. Having successfully built similar SaaS platforms and real-time dashboards that have served thousands of users, I bring extensive experience in not only converting intricate Excel models to code but also maintaining high precision and fidelity to the original results. This skill is essential for recreating all Excel calculations in your application's code while keeping the results consistent and accurate. Moreover, as part of my full-stack proficiency, I'm fluent in Laravel, React, and Vue.js- tools that will enable a smooth execution of this project. Recognizing the importance of quality work that withstands the test of time, I consistently maintain comprehensible code structures supported by detailed documentation. In completing your project effectively, I'll ensure all your inputs are accurately integrated and align all charts with the logic in the Excel model just as you expect. Your project's long-term potential also excites me; my capacity to lead projects from their infancy to Thanks!

@abdf2010

Hello there, I reviewed your project Web Developer for EV Energy Optimization App and understood the requirements at a high level. I focus on delivering clear, stable, and maintainable solutions aligned with the actual scope, I can work with JavaScript, Web Development, Excel VBA and follow a clean development process with proper structure and error handling. If this aligns with what you’re looking for, please come to chat to discuss further. Best regards

@jepita200

Hello there,, I have advanced experience in Data Mining, Statistics, Statistical Analysis and Data Science. With my vast background in data analysis and management, I am confident in my ability to handle your categorical data project effectively and efficiently. I have extensive experience in collecting, cleaning, analyzing, and visualizing data using Python programming, an invaluable asset for a project of this nature. Additionally, I am well-versed with CRISP-DM framework and adept at identifying patterns within datasets Choosing me means benefitting from not only my expertise but also my personal approach to projects. I understand that each task is unique, requiring tailored skills, and so I'm willing to go the extra mile to provide you with results that meet and exceed your expectations. Let's join forces in this project as our combined strengths will surely produce a result that's efficient, elegant and insightful! Let's not waste any more time! Together, we can mine this data efficiently and answer the questions to achieve your goals. Best Regards, Thanks

@dragomira2

Hello Tom, Thank you for the detailed project description. I am an individual freelancer (not an agency) with extensive experience in translating complex Excel models—particularly within the energy and financial domains—into robust, production-level web applications. Your requirement to accurately interpret and replicate every aspect of the Excel logic, including nuanced calculations and optimization routines, aligns directly with my technical background. I have previously engineered energy optimization tools involving EV charging, PV integration, and dynamic tariff structures, where Excel-based models were the primary validation benchmarks. My expertise spans both frontend and backend JavaScript/TypeScript, with a strong focus on data integrity, numerical precision, and clear code structure. This enables me to deliver solutions where web application results match Excel outputs within tight tolerances. For your project, my approach will begin with a comprehensive analysis and documentation of the Excel model: I will map every input, intermediate calculation, and KPI, ensuring full transparency and traceability. I will then carefully implement the core calculation and optimization logic in code, structuring it into modular layers for maintainability and scalability. Solver logic will be designed for deterministic, repeatable results, and all visualizations will be aligned with Excel’s time-series outputs. I am passionate about building intuitive, reliable tools for the energy sector, and I am excited by the prospect of contributing both to this project and to your team in the long term. I look forward to discussing how I can help elevate your application to the next level.