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Développement de nouvelles fonctionnalités sur une API déjà live depuis 4 ans en lien avec les logiciels de caisse
Mã dự án: 40319079
44 đề xuất
Dự án từ xa
Hoạt động 18 ngày trước
Thiết lập ngân sách và thời gian
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44 freelancer chào giá trung bình €13.823 EUR cho công việc này

As an API development expert with years of experience, I'm confident in my ability to not only meet but exceed your expectations when it comes to the development of new features for your existing API. With over four years focusing on the backend system, a skill matched quite well with your project requirements, I'll ensure your software links up seamlessly with the POS systems and performs flawlessly. One aspect that sets me apart is my AI and intelligent systems proficiency. This notable skill includes AI-powered applications, and RAG knowledge systems, exactly what you need in the software linking up with POS (Point-of-Sale) systems – which are heavily data-driven, high-performance need. As a full-stack developer, I also guarantee cohesive front-end integration and intuitive interfaces. Lastly, I prioritize delivering clean and maintainable solutions so you won’t have to worry about any infrastructure issues down the line. Moreover, scalability from prototype to enterprise level has always been one of my core priorities; your system will be future-proof. To initiate this fantastic journey together, know that I am flexible to discuss the specific needs of your project and determine any customizations necessary to achieve an even more successful outcome.
€18.000 EUR trong 60 ngày
6,0
6,0

Being a certified and experienced ISO company with over 15 years of industry experience, we have a proven track record in delivering top-notch API solutions. Our vast portfolio includes the development and maintenance of diverse APIs that have powered businesses across various industries, including software for cash register management. Specifically, we have proficiency in Elixir Phoenix Liveview - a powerful toolset for building highly interactive, real-time web applications, just like your API needs. Our team at has worked with several global clientele and transformed their technical needs successfully. We are equipped with diverse domain expertise and highly skilled professionals that position us exceedingly well to understand your requirements and deliver accordingly. With daily communication, quick responses, and work guarantee - you can trust our ability to provide timely, bug-free results while keeping you up-to-date throughout the entire process. Let's bring your vision into reality through our innovative techniques! I am enthusiastic about the opportunity to contribute to your already thriving API and take it to new heights. Discussions or a call would be fantastic to discuss how we may tailor our skills to your project – schedule one today! Thank you
€15.000 EUR trong 90 ngày
5,2
5,2

¡Hola! Según la descripción de tu proyecto, buscas desarrollar nuevas funcionalidades para una API existente, creada con Elixir Phoenix LiveView, que lleva varios años en funcionamiento y está conectada a un software de punto de venta (POS). El objetivo es ampliar la API actual con nuevas capacidades, manteniendo la estabilidad, el rendimiento y una integración perfecta con el sistema POS. Mi enfoque se centrará en ofrecer mejoras estructuradas para la API, incluyendo: análisis del código fuente existente de Elixir Phoenix LiveView, desarrollo de nuevos endpoints y módulos de funcionalidades, integración segura y optimizada con el POS, ajuste y pruebas de rendimiento para mantener la estabilidad del sistema, y documentación clara para el mantenimiento y la escalabilidad futuros. Me especializo en el desarrollo de API backend, sistemas basados en Phoenix, integraciones escalables y optimización del rendimiento, con énfasis en la fiabilidad, la mantenibilidad y el flujo de datos seguro. Conectemos para revisar la estructura actual de la API, las nuevas funcionalidades necesarias y el flujo de trabajo de implementación para planificar el proceso de desarrollo. Saludos cordiales, Nikita Gupta.
€10.000 EUR trong 28 ngày
4,7
4,7

Bonjour, je peux vous aider avec cela. Je suis développeur avec une grande expérience des automatisations et des intégrations. J'ai aidé des clients sur des projets similaires. Faites-moi savoir votre intérêt, Cordialement, Nicolas
€15.000 EUR trong 7 ngày
4,9
4,9

Welcome! I'm Sagar Ahmad, a seasoned full-stack developer with more than 10 years of experience under my belt. I harness a variety of skills including API Development, POS development and Software Development. My vast expertise makes me perfectly suited to work on your project concerning the development of new functionalities for an existing API related to point of sale software. Throughout my career, I've successfully completed over 100 projects with complete customer satisfaction. My proficiency in Elixir Phoenix Liveview and thorough comprehension of web development standards will ensure that your API functionality is both robust and efficient. Furthermore, my 100% on-time rate and 97% adherence to budget demonstrates my diligence in delivering high-quality work within schedule.
€15.000 EUR trong 35 ngày
4,5
4,5

As a seasoned software developer with vast experience in API development and software creation, I would be the perfect match for your Elixir Phoenix Liveview project. Throughout my career, I have worked on various projects that entail improving existing systems to provide value-added functionalities - exactly what you require after four years of operation. Together with my incredible team at Smart Sols, we have successfully delivered numerous scalable web and mobile applications just like yours, with a focus on clean, efficient architecture and streamlined workflows. We see beyond just coding - our objectives lay strongly in creating systems that bring positive results and growth to businesses – an approach I believe aligns perfectly with your project's needs. By embracing our services, you not only secure hands-on expertise in Elixir, Phoenix Liveview, and API development but also a long-term partner dedicated to supporting the technical aspects of your project even after its completion. Communication is also at the center of our productive working style; hence, you are assured of fast and constant updates throughout the project duration. Let’s transform your API into an even more functional and effective toolurent.
€15.000 EUR trong 55 ngày
4,5
4,5

Bonjour, Intervenir sur une API en production depuis quatre ans pour y ajouter de nouvelles fonctionnalités en lien avec des logiciels de caisse demande une approche rigoureuse. Une API mature a ses propres conventions, ses zones sensibles et ses dépendances implicites qu'il faut comprendre avant d'écrire la moindre ligne. Trois questions rapides avant de commencer. Quelle est la stack technique de l'API, Laravel, Symfony, Node.js ou autre, et dispose-t-elle d'une couverture de tests existante sur laquelle je peux m'appuyer pour valider mes ajouts sans régression ? Quels logiciels de caisse sont concernés par les nouvelles fonctionnalités, des solutions comme Lightspeed, Zelty ou une intégration propriétaire, puisque cela conditionne le format des échanges et les contraintes de synchronisation ? Et les nouvelles fonctionnalités sont-elles déjà spécifiées dans un document ou faut-il participer à la phase de cadrage technique ? Mon approche sur une API live serait de commencer par une lecture approfondie du code existant et de la documentation disponible avant toute modification, de travailler exclusivement sur des branches de fonctionnalités avec des tests couvrant chaque nouvel endpoint, et de valider sur un environnement de staging avant tout déploiement en production. La compatibilité ascendante avec les intégrations existantes serait une priorité absolue tout au long du développement. Prêt à démarrer dès que vous souhaitez partager l'accès au dépôt.
€15.000 EUR trong 7 ngày
4,2
4,2

Hello, Working on a 4-year-old live API connected to POS systems is not just about adding features — it’s about doing it without breaking what already works. Most issues in such systems come from unsafe updates, poor versioning, or lack of understanding of existing data flow. That’s where I focus. I have strong experience in backend API development, especially with production systems where stability, performance, and backward compatibility are critical. My approach is always structured: * Analyze current API architecture and dependencies before making changes * Ensure backward compatibility for existing integrations * Implement new features with clean and scalable logic * Optimize performance for fast and reliable transactions * Test thoroughly to avoid production risks While my core experience is in PHP-based systems (Laravel, CodeIgniter, custom APIs), I am comfortable adapting to new stacks like Elixir/Phoenix when the system design is clear. I don’t just write code — I work with a clear focus on keeping your live system stable while extending it safely. If you can share API documentation and the features you want to build, I can quickly evaluate and suggest the best approach. Let’s discuss. Regards, Kamlesh
€15.000 EUR trong 7 ngày
4,0
4,0

Bonjour, Nous pouvons vous aider à étendre et à améliorer votre API existante avec de nouvelles fonctionnalités évolutives tout en assurant la stabilité et la rétrocompatibilité avec vos intégrations POS actuelles. Avec plus de 8 ans d'expérience, Gensols a fourni des solutions API et des intégrations robustes pour le commerce électronique, la fintech et les plateformes d'automatisation, ce qui nous rend bien équipés pour travailler sur des systèmes déjà en direct et critiques pour l'entreprise. Notre approche se concentre sur une architecture propre, des points de terminaison sécurisés et une intégration transparente avec votre écosystème de point de vente, tout en maintenant les performances et en minimisant les perturbations pour les utilisateurs existants. Nous serions heureux d'examiner votre structure API actuelle et de discuter en détail des nouvelles fonctionnalités pour fournir un calendrier et une feuille de route précis. Cordialement, Technologies Gensols LLC
€15.000 EUR trong 7 ngày
2,9
2,9

As an experienced full-stack developer fluent in Elixir, I strongly believe that I possess the necessary skills and background to take your API project to the next level. Over the past decade, I have mastered numerous technologies and frameworks, including Elixir Phoenix Liveview - precisely what your project calls for. I am familiar with developing new features while maintaining the stability of an existing system, as evidenced by my 4-year track record. What sets me apart is my startup mindset; I understand that getting your hands on a reliable developer who can not only reimagine and develop the novel functionalities of your API but one who can adapt effortlessly to work in conjunction with your software requires more than mere technical skills. My commitment to open communication, flexibility, and partnership means you can trust me to fully integrate myself into your team, work collaboratively yet independently all with a common understanding of a successful outcome. My previous projects have been featured in prominent tech spaces due to their longevity, reliability, and scalability - traits that align perfectly with your desire for a game-changing product. Your project entices me as it resonates with my passion for turning innovative ideas into functional digital solutions. So why continue searching? Let's discuss transforming your existing API today!
€20.000 EUR trong 28 ngày
3,1
3,1

With more than two decades of experience in API and software development, I bring a wealth of knowledge and expertise to the table. I have a successful track record of working on similar projects, including developing APIs for well-established systems just like the one you're using. My proficiency in Elixir Phoenix LiveView will be instrumental in enhancing your API as desired. In addition to my deep understanding of API development, I offer a versatile range of skills that can benefit your business. From AI & ML solutions to web and desktop applications and automation, my technical proficiencies are designed to deliver innovative, scalable, secure, and efficient solutions tailored to your unique needs - just what your API requires! With my focus on business growth and innovation, rest assured that I won't only develop functionalities but also bring forward-thinking ideas to improve user experience. Plus, being a master in collaborating remotely across time zones, our workflow will remain seamless throughout the project. Don’t hesitate to unleash the potential of your system by choosing me – an experienced developer who delivers impactful results. Shoot me a message and let’s discuss how we can add phenomenal value to your API!
€10.000 EUR trong 30 ngày
3,3
3,3

I can add immense value to your project. I've spent the past few years specializing in ERP/CRM implementation and automation, which is directly relevant to your requirement of developing new features for your live API. My proficiency in Microsoft Dynamics 365, Power Apps, Power Automate coupled with my general skills in Python, Node.js and React make me an ideal choice for this task. Let's connect now over chat.
€18.000 EUR trong 60 ngày
0,0
0,0

As an experienced developer, my team and I at Systemapic understand the critical role that APIs play in connecting your software, especially when it comes to point-of-sale systems. Having personally worked on countless API integrations, I have honed my skills not only in API Development but Software Development as a whole. With our extensive knowledge of and current work on Elixir Phoenix Liveview (which your existing API is built on), we are uniquely qualified to tackle any new feature requirements for your business. My hands-on experience with similar projects will not only accelerate the development process but also guarantee smooth integration with your existing systems. At Systemapic, our core commitment is to deliver solutions that optimize operations, drive efficiency, and enhance decision-making. For the last 4 years, your API has powered crucial aspects of your business - we understand and appreciate its importance. By choosing us, you are electing peace of mind, assured that you're collaborating with a capable and focused team that will ensure a seamless experience for both you and your end-users. Let's power up your business together!
€15.000 EUR trong 7 ngày
0,0
0,0

Aubière, France
Thành viên từ thg 4 16, 2025
₹12500-37500 INR
€30-250 EUR
₹1500-12500 INR
$25-50 USD/ giờ
$300 AUD
₹1500-12500 INR
tối thiểu 50 USD$/ giờ
$250-750 USD
$250-750 USD
$1500-3000 USD
$25-50 USD/ giờ
₹1500-12500 INR
₹600-1500 INR
£35-45 GBP/ giờ
₹1500-12500 INR
$30-250 USD
£20-250 GBP
₹12500-37500 INR
₹12500-37500 INR
₹600-1500 INR