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Full Stack Fintech Engineer We’re seeking a senior full stack engineer who can architect and deliver the MVP from scratch, covering both backend logic and frontend user experience. What You’ll Build • Core Backend • Matching engine for deposits and withdrawals (order book logic). • Settlement verification with double-consensus confirmation. • Broker API integrations for instant credit/debit. • Dispute resolution system with document uploads. • Optional crypto bridge for collateral/multi-currency swaps. • Frontend / User Experience • Cashier module that embeds seamlessly into broker platforms. • Trader portal (post offers, accept matches, confirm payments). • Clean, responsive web UI + mobile-friendly design. • In-app chat for counterparties. Requirements 5+ years building full stack fintech or payment platforms Strong backend skills (Node.js / Go / Python, PostgreSQL/Redis) Frontend expertise (React / [login to view URL] / Vue) with UI/UX for payments/checkout Payment systems, banking APIs, or P2P exchange experience Secure coding practices (fraud prevention, consensus logic) Bonus: Blockchain / smart contracts (Solidity or similar)
Project ID: 39728661
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56 freelancers are bidding on average $46 SGD/hour for this job

Dear Sir /Mam, ★★★ TOP 1%★★★ Verified Freelancer Company ★★★ 16 +Years of Experience★★★Number 1 Digital Marketing Company in the world ★★★Skills:AI, ML, PYTHON, REACT, NODE, DJANGO, ERP, PHP IN ALL FRAME WORK, WEBSITE DESIGN ★★★We have a 24/7 support team as well to manage your customer and your after-sale service over the call / Chat at only $ 5-100 per hour with , chat support ,development , customer services and customer support and Artificial Intelligence Developer, Machine Learning, Python, React, JavaScript, Node★★★All kind of development staff is available on hourly basis fit short time or long time with great customer satisfaction is our past record almost 20 year experience in this segment all our clients are happy from our work still giving work continuously from whole world please check reviews n rating from all over the world. ★★★Our team consists of experienced and passionate web developers & designers who utilise the latest technologies in the market. Prior to this, our company worked on many projects for Worldwide clients in the fields of web design, development & SEO, Digital Marketing, p Support on nth level ★★★If you would like more information Let's discuss it here ★★★★★★★★★ Thanks Regards, PVSYS GROUP ★★★★★★★★★ " IF YOU THINK THEN WE CAN"
$60 SGD in 40 days
7.8
7.8

Hello I have build some fintech platform so i believe i can finish this project very quickly and quality Please contact me to discuss more detail Thanks
$45 SGD in 40 days
6.9
6.9

Hello Raj, I understand your need for a senior full stack engineer who can architect and deliver the MVP for your fintech project efficiently. I specialize in scalable web development using Node.js for the backend and React for the frontend, ensuring a clean and responsive design tailored for payment systems. My experience aligns perfectly with your requirements, including backend logic for deposits, withdrawals, and settlement verification, alongside frontend user experiences like a cashier module and a trader portal. In addition, I implement secure coding practices to prevent fraud and ensure a reliable system. You can review my portfolio, which showcases projects like a Food Delivery App, Taxi Booking App, and Dating App, here: https://www.freelancer.in/u/ixorawebmob. **Estimated Timeline:** - UI/UX Design: 4–5 days - Development: 14–18 days - Testing & Launch: 3–4 days Let’s connect via chat or call to discuss this exciting opportunity further! Thanks, Arpit
$30 SGD in 26 days
7.1
7.1

Nice to meet you rajkasi, It is a pleasure to communicate with you. My name is Anthony Muñoz, I am the lead engineer for DSPro IT agency and I would like to offer you my professional services. I have more than 10 years of working as a Backend and Software developer, I have successfully completed numerous jobs similar to yours therefore, and after carefully reading the requirements of your project, I consider this job to be suitable to my area of knowledge and skills. I would love to work together to make this project a reality. I greatly appreciate the time provided and I remain pending for any questions or comments. Feel free to contact me. Greetings
$90 SGD in 40 days
5.9
5.9

Greetings, I have read the project description I have been working on a similar project in recent time. I am interested in the work open a chat to discuss requirements in details.
$70 SGD in 40 days
5.6
5.6

Having spent over eight years building full stack fintech products from the ground up, I understand the critical need for a robust and secure MVP that handles complex financial logic with a seamless user experience. I am confident I can architect both the backend matching engine with its consensus logic and the responsive frontend trader portal you've described. I have direct experience with broker API integrations and building secure, in-app communication systems, and I am already thinking about the best ways to structure the settlement verification process. I would love to discuss your vision for the dispute resolution system and how we can deliver this project successfully. You can view some of my previous work here: https://www.freelancer.com/u/javedabbasi8080 Regards Javed Abbasi
$45 SGD in 45 days
5.3
5.3

Hello, With over 8 years of experience specialising in full stack fintech solutions, I, alongside my dedicated team, believe we have the skill and expertise that aligns well with your project. Our proficiency in modules like Financial Management, Sales and Service Management as well as Supply Chain Management on platforms such as Microsoft Dynamics 365 and SAP has prepared us well to handle the vast intricacies a fintech platform like yours so diligently require. I'd love to work on your project. Let's connect now over chat for further discussion. Regards, Sahanaj
$60 SGD in 40 days
5.1
5.1

What is the specific timeline you have in mind for delivering the full MVP? I specialize in building fintech applications and can design a robust architecture that includes a matching engine and an efficient dispute resolution system. With over 5 years of experience in full stack development, I am proficient in backend technologies like Node.js and Python, as well as frontend frameworks such as React. Having worked extensively with payment systems, I understand the importance of secure coding practices, especially for sensitive transactions. My approach focuses on crafting a clean, responsive UI and ensuring seamless integration between modules. I am also well-versed in fraud prevention and consensus logic, making me an ideal fit for your project. I would love to discuss how I can help bring your vision to life. Let’s connect to explore this opportunity further.
$45 SGD in 40 days
3.4
3.4

I have gone through your needs and I am sure that the combination of my full stack fintech development background and your project will create a great match. I have a full range of experience in constructing the backend systems as well as frontend interfaces for payment platforms and P2P exchanges. The technologies that I usually employ are Node.js, Python, PostgreSQL, Redis, and React/Next.js. My attention is drawn to the security and scalability of the systems that I build which deal with sensitive financial data. Some of these processes are order matching, settlement verification, and API integrations with banking or broker services. For the frontend, I aim to provide a clean, responsive, and mobile-friendly user experience. The features that I have worked on are cashier, trader portals, and in-app chat which are some of the user interfaces designed to be simple and reliable. I am sure that I can do the architecture and the delivery of your MVP the way we want it to be, right from the beginning, with the backend logic and frontend UX of the highest standards. It would be my pleasure to go over your priorities, timelines, and technical approach so that we can come up with a platform that is both robust and production-ready. Regards, Pablo
$45 SGD in 40 days
1.7
1.7

I am a seasoned software developer with 13 years of experience, holding a degree from IIT Delhi. My expertise aligns perfectly with the required skills for your project. I have successfully delivered complex solutions across diverse domains with a focus on quality and scalability. I bring strong problem-solving ability, hands-on technical depth, and client-centric delivery. I am confident I can add value to your project and deliver results within timelines
$45 SGD in 40 days
0.4
0.4

Dear Valued Client, I read your project details and I can do your project perfectly. Please check my similar work in portfolio: https://www.freelancer.com/u/pentasoftsuk I have 5+ years experience in this field and I am very dedicated in my work. I work almost 16-18 hours daily to deliver best results. WHAT YOU GET FROM ME: - Daily updates and quick response to your messages - Daily progress reports so you know what work is done - Bug-free work with proper testing because I know client is not tester - Guaranteed quality work and support whenever you need I am very professional and expert in web design and development field. I will do excellent work on your project if you give me chance and will make you 100% happy with my work. PLEASE MESSAGE ME TO DISCUSS MORE DETAILS. I AM READY TO START YOUR PROJECT RIGHT NOW. Best regards, Penta S.
$45 SGD in 40 days
0.3
0.3

Hi, I am a full-stack developer with 10 years of experience. I have acted as software architect and technical lead on a number of projects. I love the API-first paradigm with JS frameworks like React + Redux on the frontend, and Node.js for the backend for complex interface apps. I have worked with SQL and NoSQL databases, including PostgreSQL, and also with cloud solutions such as Firebase. I am experienced in designing UI/UX. Over the last 6 months I have implemented a large project - GraphQL API for the Hedera network. It allows to make convenient human-readable queries on various events from the network. This also includes a bunch of related projects - SDK, client dashboard, analytics system, etc. One of my video chat projects is web a platform where users search for experts in various areas and buy online consultations. You can find it in my Upwork portfolio. Here are some other examples of my past projects: - ScopeSports - NFT-marketplace and social network with paid access to exclusive content and direct communication with sports athletes. The non-blockchain functionality is a hybrid of Facebook and Discord. Chats, posts with videos or pictures, comments, each athlete and his audience have their own private fan club. - Jamble - a German Tinder-like dating app. The service has a sophisticated matching algorithm based on profile preferences and matching quizzes. Voice/video chats and personal content sharing are available for the premium membership plan. I have a pretty decent amount of projects in my portfolio. I am happy to tell more during a video call.
$60 SGD in 7 days
0.0
0.0

hello, how are you? I am a senior full-stack developer, have rich experience in eCommerce solutions. I majored in MERN, Python, Web3. I hope to discuss for more detail. Thank you!
$45 SGD in 40 days
0.0
0.0

My name is Rohk Elen, and I am a senior Python developer with over 14 years of hands-on experience building robust, scalable, and high-performance solutions. I specialize in: Backend Development: Python, Django, FastAPI, Flask Payment Systems: Stripe and custom payment gateway integrations Cloud & DevOps: AWS architecture, CI/CD automation, deployment pipelines Databases: PostgreSQL, MySQL, MongoDB API Development: REST APIs, microservices, and scalable backend systems Over the years, I have successfully delivered projects across industries, including custom API development, payment systems, real-time applications, and cloud-based solutions.
$40 SGD in 40 days
0.0
0.0

Hello I am writing to express my strong interest in the Senior Full Stack Fintech Engineer position. I have carefully reviewed your project description and am confident that my experience as a Senior Full-Stack Developer is a perfect fit for architecting and delivering your MVP from scratch. My background includes building robust back-end systems using Node.js, with a deep understanding of PostgreSQL and database logic required for complex functionalities like a matching engine and secure settlement verification. I am also highly skilled in React, enabling me to create the clean, responsive, and mobile-friendly user experience you need for the cashier module and trader portal. I have direct experience with building APIs, integrating third-party services, and implementing secure coding practices essential for a fintech platform. My ability to handle both the front-end and back-end will allow me to deliver a cohesive and scalable solution. I am eager to discuss this project further and demonstrate how my skills can bring your vision to life. Thank you for your time and consideration.
$45 SGD in 40 days
0.0
0.0

With over 5 years of experience building full stack fintech and payment platforms, I'm confident in my ability to architect and deliver your MVP from scratch. My deep understanding and expertise in technologies like Node.js, PostgreSQL, React, and more will ensure that the backend logic and frontend user experience are seamlessly integrated for optimal performance. In addition, I possess a strong grasp of secure coding practices having worked on fraud prevention and consensus logic in past projects. This will be instrumental in developing the matching engine for deposits and withdrawals in your platform as well as your dispute resolution system – two key areas where robust security measures are critical. Moreover, while I may not have direct experience in Blockchain/smart contracts using Solidity or similar languages as mentioned in your bonus requirement, my broad skill set across various modern technologies gives me the versatility required to quickly adapt and learn new tools if necessitated by the project. Choose me for comprehensive solutions delivered with superior precision and drive your fintech project towards unheralded success.
$30 SGD in 40 days
0.0
0.0

Dear Concern, App in Snap offers Fintech banking solution developers with 100% compliance expertise. Our resources, available as shareware or fully dedicated, are ready to augment your team. We provide free A/B testing and QA reporting with resource augmentation. We are a global firm with over 300 in-house and 450 remote resources. Pricing is negotiable to meet your budget. We are confident our team can meet your needs and exceed your expectations.
$45 SGD in 40 days
0.0
0.0

Dear, Hope this message finds you well. I am Dalibor, and I am currently seeking new challenges. Believe that my experience and my skills in my previous career would allow me to add significant value to your ongoing projects. I would appreciate the opportunity to discuss how my background, skills, and enthusiasms align with the goals of your project. Looking forward to the possibility of discussing exciting opportunities with you. Best, Dalibor P.
$50 SGD in 40 days
0.0
0.0

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