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# React + Flutter Developer & Lead-Closure Telecaller — ChemNexus Global We are looking for **two complementary skill sets** to accelerate the growth of **ChemNexus Global**, a growing B2B platform for the global chemical industry. This is a **fast-moving project**. We are looking for people who can execute quickly, communicate clearly, and take ownership rather than simply complete assigned tasks. ### 1. React + Flutter Developer Our current website is built in **React**, and our mobile application is being developed in **Flutter**. We need a developer who can work comfortably across both environments and help us with: * React website enhancements and feature development * Flutter app enhancement and ongoing development * Maintaining **feature parity between website and app** * UI/UX improvements and implementation * Bug fixing, optimisation and performance improvements * Clean, scalable and well-commented code * Proper Git/GitHub workflow and regular code commits * Understanding the existing architecture before making changes **Important:** The app is already underway, so this is not a greenfield project. You should be comfortable joining an existing codebase and becoming productive quickly. **Speed is critical.** When we say ASAP, we genuinely mean immediate execution and fast turnaround. Please share: * GitHub/portfolio links * Examples of React + Flutter projects * Screenshots or links to live applications * Your availability and expected turnaround * Hourly or project-based commercial expectations --- ### 2. Lead-Closure Telemarketing / Sales Executive At the same time, we are looking for a **proactive telecaller/sales professional** who can work on warm leads already available in our CRM. The responsibility will include: * Calling and following up with existing leads * Understanding their business and requirements * Clearly explaining ChemNexus Global's offerings * Handling objections and follow-ups * Converting qualified prospects into paying customers/members * Maintaining accurate CRM updates * Providing daily activity and conversion reports * Taking ownership of the lead until closure We are **not looking for someone who simply makes calls**. The objective is **follow-up → engagement → conversion**. A confident telephone manner, good communication skills, basic understanding of B2B sales and the ability to consistently follow up are important. Experience in **B2B, industrial, chemical, SaaS, marketplace or membership sales** will be an advantage. --- ### Can you do only one? Absolutely. You may apply for: **A. React + Flutter Development** **B. Lead Closure / Telemarketing** **C. Both** We are comfortable hiring separate specialists if that results in faster and better execution. ### Before applying Please provide: 1. Relevant past work / portfolio 2. Examples demonstrating your actual experience 3. Your availability to start 4. Expected turnaround 5. Commercial expectations 6. For sales applicants: your previous B2B calling/closure experience and typical conversion responsibilities **An NDA will be required before access to confidential ChemNexus Global information, code, CRM data or business information is provided.** We are looking for **long-term working relationships with reliable, execution-focused professionals**, not one-off freelancers. If you are confident you can deliver quickly and take ownership, please apply with relevant proof of your work.
Project ID: 40704715
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81 freelancers are bidding on average ₹938 INR/hour for this job

I see you're looking for a developer who can enhance both your React website and those Flutter app while maintaining feature parity. And I can jump in right away to assess the current code and identify areas for improvement, my focus will be on making sure the enhancements are implemented smoothly and efficiently, with well-commented code pushed to your Git repo. I can go ahead and complete the work first, so you can test everything before making any payments or awarding the project. This way, you can be sure you're satisfied with the results without any risk on your end, which is always nice. I'm ready to start immediately and can work at a rate of 829 INR. Looking forward to really collaborating on this project. Rajavel - React and Flutter Developer
₹829 INR in 10 days
7.7
7.7

Hi, I’m a full-stack developer with 10 years of experience working across React.js, Flutter, REST APIs, and scalable business applications. I can work across the React website and Flutter application, maintaining feature parity while implementing enhancements, UI/UX improvements, bug fixes, API integrations, and performance optimization. My approach would begin with an architecture review and prioritized task breakdown, followed by focused implementation and testing of each feature. I’m also comfortable collaborating with an existing technical team and taking ownership of assigned modules. Let’s discuss the current roadmap and development workflow. Best regards
₹750 INR in 40 days
7.2
7.2

I understand you’re looking for someone who can handle both the React website enhancements and Flutter app improvements, while keeping the work clean, fast and properly maintained in your Git repository. I can handle the React + Flutter development side, including feature enhancements, UI improvements, API integration and testing. For the lead-closure calling, I can coordinate with your CRM workflow and follow-up requirements, but my main expertise is development. I’m also comfortable working under an NDA before accessing the codebase or business information. Let’s chat about the current React website and app, what needs to be enhanced first, and your expected turnaround so we can plan the work accordingly. Regards, Vipin
₹750 INR in 40 days
6.6
6.6

Hi, I can handle the React + Flutter development side of your ChemNexus Global project. I have experience working with existing React codebases and Flutter applications, including feature development, UI/UX improvements, bug fixing, performance optimisation, and maintaining consistency across web and mobile. I’m comfortable joining an ongoing project, understanding the existing architecture quickly, and working through Git/GitHub with regular commits. I can start immediately and prioritise fast turnaround without compromising code quality. I can also support ongoing development and long-term maintenance as required. Availability: Immediate Commercial: ₹1,000/hour I’d be happy to review the existing codebase and discuss the immediate priorities.
₹1,000 INR in 40 days
6.5
6.5

Hello, I hope you're doing well. I can support React and Flutter development, or warm-lead follow-up through CRM. I’m comfortable joining an existing codebase, using GitHub, and keeping feature behaviour aligned across web and mobile. I’d start by reviewing the architecture or lead stages, then agree on the first priority. Could we have a short chat about ChemNexus Global’s current codebase and CRM workflow? Thank you, JennyCreation
₹750 INR in 40 days
6.2
6.2

I am Mayank, an experienced and practical-minded React and Flutter developer with two decades of proven success in PHP-based development, concentrating on Laravel and WordPress. I have a strong grip on critical tasks such as payment gateway glitches, backend complexities, and API interruptions. Known for my clean, maintainable solutions, I emphasize long-term stability and scalability for your business. Regarding the first role, I believe I am well-equipped to help ChemNexus Global maintain its website's feature parity with the ongoing Flutter project. Apart from enhancing your React website and your Flutter mobile application, I can provide valuable insights on UI/UX improvements, bug fixes, optimization strategies, and performance enhancements. Having a thorough understanding of Git/GitHub workflow means that my code commits are timely and precise. Though Lead-Closure Telemarketing isn't under my belt of offerings directly, my extensive experience in B2B business development ensures that I possess crucial transferable skills. I'm confident in my abilities to conduct warm calls effectively, understand prospects' requirements diligently, address objections proficiently, and ultimately convert leads into successful transactions. If you believe efficiency is what you need at ChemNexus Global as much as I do when it comes to executing projects immediately without sacrificing quality, then let's form a dynamic-powered alliance!
₹750 INR in 40 days
5.9
5.9

Hi, I'd be happy to join as your React + Flutter developer, working across your existing website and app codebases to drive feature parity and fast turnaround. I have 6+ years of full-stack development experience, with strong expertise in React and Flutter for cross-platform mobile development, along with a track record of building mobile apps with multi-tenant architecture and role-based permissions. I'm comfortable jumping into an existing codebase, understanding the current architecture before making changes, and moving quickly on enhancements, bug fixes, and UI/UX improvements across both platforms. I'd maintain clean, well-commented, scalable code with a proper Git/GitHub workflow and regular commits, keeping the website and app aligned on feature parity as you scale. I'm available to start immediately and can move at the fast pace this project needs, with clear daily communication on progress. Thank you.
₹1,000 INR in 40 days
5.0
5.0

As an experienced full-stack developer, particularly well-versed in React and Flutter, I believe I'm the ideal candidate for your ChemNexus Global project. With a comprehensive understanding of both web and mobile app development, I have successfully tackled more than 416 projects over my 14 years in the industry. My familiarity with delivering clean and scalable code that adheres to Git/GitHub workflows ensures efficiency and allows me to work quickly, which is essential for your immediate needs. I take pride in my ability to quickly understand pre-existing architectures and efficiently utilize them. Thus, joining an already-ongoing project like yours won't pose any challenge—rather, it will allow me to bring my expertise to the table immediately! For your app enhancements or feature parity maintenance—as demanded by your project—I not only provide timely deliverables but also make sure they are bug-free and optimized for improved performance. Let's discuss further how we can accelerate ChemNexus Global's growth together!
₹1,000 INR in 40 days
5.1
5.1

Continuing from your previous sales pitch. As a Full Stack Developer with extensive experience in Web Applications, Custom Software Development, and Mobile Applications, I can confidently handle your requirements in both React and Flutter. My expertise extends to UI/UX improvement, bug fixing and optimizing performance, all of which are crucial to meeting your project's objectives. I have a deep understanding of current architecture and appreciate the urgency of maintaining feature parity between the website and app. Past employers can vouch for my skills in ensuring clean, scalable and well-commented code which adhere to the best Git/GitHub workflow practices. Rest Assured that once I get access, productiveness will commence instantaneously thereby ensuring speediness. My business automation skills considerately structure workflows for your Lead-Closure requirement. Having been an experienced tele-caller myself, using persuasion while dealing with objections comes naturally for me. One of my most recent projects involved follow-up → engagement → conversion through telephone calls, just as you mentioned, and this resulted in significant success with potential conversion. My proficiency in basic B2B, SaaS and membership sales will be advantageous in understanding your warm leads' unique requirements better. Available during US, UK and Australian business hours, I am ready to integrate both my technical capabilities and telemarketing know.
₹1,000 INR in 40 days
4.8
4.8

As a seasoned and versatile developer, proficient in both Flutter and React, I can effortlessly navigate between the two codebases to ensure consistency and efficiency while enhancing your website and application at Chem Nexus Global. My experience working on cross-platform apps will prove invaluable as I guarantee feature parity which will significantly minimize the learning curve for your users. My clean coding practices and familiarity with your preferred development space, Git, ensure that solutions are not imposed but evolve to meet your specific needs. In tandem with my technical prowess, I bring a strong background in non-technical yet essential work like telemarketing, especially lead management and closure tactics. This puts me in a unique position to maintain momentum while taking advantage of warm leads already sitting in your CRM system. With excellent communication skills, a confident phone manner, an understanding of your products, and daily update commitments, you can trust in my ability to follow up persistently, build solid relationships, and close deals effectively for maximum impact.
₹1,000 INR in 40 days
4.2
4.2

As the founder of **ChemNexus Global**, you need not one but two passion-driven professionals to come on board and help you take your B2B chemical platform to the next level. Well, let me assure you—I'm not just a seasoned Full Stack Developer, I am your React + Flutter ace. With specific expertise in building web applications similar to the one you have in mind, I can hit the ground running and maintain speedy project progress throughout. Taking pride in my ability to adapt quickly, work well within existing codebases and deliver under pressure, I guarantee a seamless transition into your team. My GitHub links and portfolio will provide insight into my successful execution of React and Flutter projects over the years. Through these platforms, I was able to achieve consistent feature parity between websites and apps, which is vital for your objectives. Additionally, my keen eye for UI/UX improvement, bug identification & fixes, optimization and maintaining clean code are sure to maximize your user experience. And let's not forget about speed— that’s a demand I fully understand. By entrusting me with this project, you will be benefiting from my high energy level which aids my productivity even under stringent timelines; invariably resulting in faster turnaround tasks combined with well-organized code commits for easy tracking of all modifications. Avoiding high-level tech jargon while debugging is also one of my strategies that help in smoothly identifying problems
₹800 INR in 40 days
4.5
4.5

Hi, Thanks for sharing your project. It aligns well with work I’ve successfully completed for other clients, and I’m confident I can deliver a high-quality solution tailored to your requirements. Before providing an accurate timeline, scope, and budget, I’d like to clarify a few key details to ensure we're aligned from the start. Freelancer’s proposal character limit makes it difficult to cover everything thoroughly here. If you're available, let's connect via chat. I can walk you through similar projects I've completed, discuss the best approach for your specific requirements, and answer any questions you may have. Once I understand your expectations, I'll provide a clear execution plan with realistic timelines and pricing. I’m ready to get started as soon as we finalize the details and look forward to working with you. Best regards, Mayank Sahu
₹1,000 INR in 40 days
4.2
4.2

Hi, I’m interested in the React + Flutter Developer role. With 12+ years in web/mobile development, I can step into an existing codebase, understand the current architecture quickly, and start delivering targeted improvements without unnecessary rewrites. For ChemNexus Global, I can handle React website enhancements, Flutter app development, UI/UX refinements, bug fixing, performance optimisation, API integrations, and maintaining feature parity between the web and mobile experiences. I’m comfortable working with existing projects where speed and ownership are important. My approach is to first understand the current implementation and priorities, then deliver changes in focused milestones with clean, maintainable code and regular Git/GitHub commits. Relevant strengths include React, Flutter/mobile development, Node.js/REST APIs, PostgreSQL/MongoDB, cloud deployment, debugging and production optimisation. I can also work closely with your team to ensure the website and app remain functionally aligned as new features are introduced. I’m available to start quickly and can discuss the current codebase, priority features, expected turnaround and either hourly or milestone-based engagement. I can share relevant React/mobile work and technical examples privately during the discussion.
₹1,000 INR in 40 days
3.9
3.9

If the React UI and Flutter screens drift apart, the user experience will feel inconsistent across web and mobile. I'll start by mapping the current component tree to the existing Flutter widget hierarchy, then lock shared data contracts in a single API layer. From there I’ll fix the reported bugs, add missing features, and push clean commits to your GitHub repo each day. A common mistake is to patch UI bugs without checking the underlying state flow, which often reintroduces the same issue later. I always run the full test suite and verify the API responses on both platforms before merging, so the fixes stay solid. You can expect the website and app to stay in sync, with faster load times and fewer regressions.
₹1,000 INR in 40 days
3.4
3.4

To deliver immediate React website enhancements and Flutter app feature parity, I will first audit your existing architecture for seamless integration, then implement clean, scalable UI/UX updates, bug fixes and performance optimisations with strict Git workflow for fast turnaround. Review current React + Flutter codebase to map shared logic and identify parity gaps. Prioritise high-impact features, UI polish and optimisations while preserving existing structure. Deliver incremental, well-commented commits so you see progress daily and can request adjustments instantly. In past similar dual-platform projects I solved cross-platform state sync delays by introducing a shared service layer, reduced Flutter rebuild lag with targeted widget optimisation, and closed React performance bottlenecks via code-splitting and memoisation—each delivered within days of joining the codebase.
₹1,000 INR in 40 days
3.7
3.7

With significant experience in both React and Flutter, I'm ready to hit the ground running on **your fast-paced project**. Having built web applications, mobile apps, and SaaS platforms for over 5 years, I understand the importance of maintaining feature parity, improving UI/UX, and optimizing performance. Leveraging my **strong problem-solving skills**, I can also navigate existing codebases without a hitch — ensuring productive contributions from the get-go. Additionally, I've got you covered when it comes to **solid Git workflow** and maintaining clean, scalable code with comprehensive commenting. But more than just writing great code—my focus is on delivering solutions that align with your business goals. This means I proactively communicate with my clients to ensure expectations are managed and met. As for timings, rest assured that my approach aligns perfectly with your need for speed. My agile mindset coupled with a knack for effective execution enables me to deliver **immediate results** without compromising quality or integrity. All this while maintaining full transparency and providing regular updates throughout the process. In conclusion, I believe my fluency across **both React and Flutter**, along with my proven track record in understanding businesses deeply and delivering real value would make me an ideal fit for your project. *)"
₹800 INR in 40 days
3.9
3.9

My name is Sonali and I'm a seasoned Mobile App Developer well-versed in both Flutter and React Native. Be rest assured that the ChemNexus app will be of a similar build standard in performance and UI/UX. In addition to that, I have a mastery over Git/Github workflows ensuring appropriate commit intervals with proper meaningful messages. Hourly or Project-based commercial expectations can be negotiated fairly keeping in mind the value; quality; speed I am bringing to your project as a dedicated player in your team! Best,
₹1,000 INR in 40 days
3.4
3.4

With over 15 years of experience in web development, I am skilled at leveraging cutting-edge technologies to create efficient and effective solutions. While my profile may not explicitly showcase React and Flutter experience I have gained a comprehensive understanding of such tools overtime. This fact, combined with my expertise in HTML, PHP as well as Git/GitHub will allow me to make seamless enhancements and maintain **feature parity** on ChemNexus Global's website and mobile application. I always leave clean, scalable, and well-commented code for easy comprehension. My adeptness extends into other vital areas requested as well. As an accomplished project manager, I work with dexterity under **pressing deadlines**, ensuring tasks are owned, executed promptly and reported dutifully. My **organizational abilities** help me understand existing architectures swiftly without sacrificing quality. If chosen, with confidentiality assured by the NDA, I commit to executing projects accurately and continuously improving upon them— no matter their scale. As an addition, even though my previous work may not suggest specialized experience in industrial or chemical sales I assure you that my combination of good communication skills and tenacious follow-up is instrumental in effective B2B closure.
₹1,000 INR in 40 days
3.0
3.0

I am an experienced full-stack React and Flutter developer specializing in fast-paced B2B web and mobile platform development. For the ChemNexus Global project, I can seamlessly integrate into your workflow to deliver the required enhancements while ensuring absolute feature parity between your React website and Flutter mobile application. Proposed Approach & Execution: Codebase Integration: Review the existing repository architecture quickly to ensure clean, scalable code additions using proper Git workflows and regular commits. Synchronous Development: Implement website features, mobile updates, and UI/UX improvements simultaneously to keep both platforms aligned. Optimization & QA: Prioritize rigorous bug fixing, code optimization, and performance enhancements for an immediate, high-quality turnaround. What I Bring: Proven hands-on expertise in React, Flutter, JavaScript, and cross-platform frontend development. Immediate availability with a rapid execution timeline tailored for urgent deployments. Clear, proactive communication to align directly with your growth objectives. I am ready to start immediately. Let’s connect to review the repositories and get things moving!
₹750 INR in 40 days
2.5
2.5

Hi I can handle both React + Flutter development and lead-closure sales, with a strong focus on fast execution, clean communication, feature parity, CRM follow-ups, and converting warm B2B leads into customers. I’m available to start quickly and can take ownership of the work from implementation through closure. Would you prefer one person handling both development and lead closure, or separate specialists? What is your immediate priority—React/Flutter development or converting the existing CRM leads?
₹1,000 INR in 40 days
2.0
2.0

Mumbai, India
Member since Sep 11, 2026
$250-750 USD
₹12500-37500 INR
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₹750-1250 INR / hour
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$30-250 USD
£250-750 GBP
₹750-1250 INR / hour
$750-1500 USD
₹750-1250 INR / hour
₹12500-37500 INR
₹12500-37500 INR
$750-1500 USD
₹5000-15000 INR
$30-250 USD