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# About the Job As a **Full Stack Developer** specializing in **Node.js, React, and TypeScript**, you will be an integral part of our engineering team, building modern, scalable web applications from front-end interfaces to back-end services. You will collaborate with designers, product managers, and fellow engineers to deliver high-quality software solutions while embracing innovation, clean architecture, and AI-assisted development practices in a fast-paced environment. ## Responsibilities * Design, develop, and maintain scalable web applications using **React.js**, **Node.js**, and **TypeScript** * Build responsive and intuitive user interfaces with a strong focus on performance and usability * Develop secure and efficient RESTful APIs and backend services * Collaborate with cross-functional teams to define, design, and deliver new product features * Optimize application performance, troubleshoot issues, and resolve bugs across the full technology stack * Write clean, maintainable, and well-documented code following industry best practices * Participate in code reviews, technical discussions, and architecture planning * Integrate third-party services, cloud platforms, and external APIs * Contribute to continuous improvement by adopting modern development tools and automation practices * Utilize AI-powered development tools to improve productivity and software quality ## Requirements * Minimum **5 years of professional experience** developing applications with **Node.js** and **React.js** * Strong proficiency in **JavaScript (ES6+)** and **TypeScript** * Experience building and consuming **RESTful APIs** and microservice-based architectures * Experience working with **SQL and NoSQL databases** such as PostgreSQL, MySQL, or MongoDB * Solid understanding of **Git** and collaborative development workflows * Familiarity with authentication and authorization mechanisms such as JWT or OAuth * Strong analytical, debugging, and problem-solving skills * Ability to work independently in a remote, collaborative envir

Specjalista Allegro do prowadzenia konta marki (freelance, zdalnie) Szukamy doświadczonego specjalisty Allegro, który poprowadzi nasze konto. Czym będziesz się zajmować: prowadzenie i optymalizacja kampanii Allegro Ads tworzenie i optymalizacja ofert (opisy, parametry, miniaturki, warianty) analiza sprzedaży i rentowności, bieżące decyzje repricer i integracje (BaseLinker) realna odpowiedzialność za konto na co dzień Kogo szukamy: min. 4 lat doświadczenia na Allegro (po stronie sprzedawcy) praktyczna znajomość Allegro Ads samodzielność i dyspozycyjność w ciągu dnia (spotkania w godzinach pracy, nie tylko wieczorami) praca na ClickUp Warunki: freelance UZ/UOD / USEME / B2B, około 20-40h miesięcznie 100% zdalnie, elastyczne godziny stała, długoterminowa współpraca stawka do uzgodnienia prosimy o CV w załączeniu oraz oczekiwana stawka godzinowa brutto

The eMAG seller account is already created. The Freelancer’s task is to fully connect and prepare eMAG sales through BaseLinker. Scope of work: The Freelancer will fully integrate BaseLinker with eMAG Marketplace for all eMAG countries currently available to us, including Romania, Bulgaria and Hungary, unless eMAG confirms a different available country setup. The work must include: Full BaseLinker–eMAG connection and configuration. Correct setup of product export, order import, shipping, tax/VAT and country settings. Activation of cheap eMAG transport / courier options for every product, where available. Preparation and listing of all current products as standard eMAG listings. Preparation and listing of special promotional eMAG offers for every product: 12 products as 3+1 offers 12 products as 5+1 offers total: 24 promotional offers Creation of new single 1 kg product offers in BaseLinker, because these are not currently prepared as separate products. The single 1 kg products must be created safely from the current BaseLinker multipack products: first export / import current product data from BaseLinker, then rework the multipack products into correct single 1 kg product versions, then import them back into BaseLinker as new products, each new product must have correct title, SKU, EAN, description, price logic, images and category. Single 1 kg offers should also be prepared for eMAG advertising, where eMAG allows advertising of such products. Promo offers must stay active either permanently or temporarily until eMAG provides another required promotional format. Products, prices, titles, descriptions, EANs, images, categories and offer structure must be checked before launch. Freelancer must test that products are visible, buyable, correctly priced, correctly shipped and that orders flow back into BaseLinker. Important rules: BaseLinker is the main product database. Freelancer must not create accidental duplicates, overwrite stock, damage existing products, remove images or change unrelated product data w

We are looking for a Senior Full Stack Developer with strong experience in JavaScript, Python, and AWS to help build scalable, modern applications that solve real business problems. In this role, you will work across the full technology stack, designing intuitive frontend experiences, developing reliable backend services, and deploying cloud-native solutions. You will collaborate closely with product, design, and engineering teams to turn ideas into high-quality features used by real users. The ideal candidate enjoys ownership, clean architecture, performance optimization, and writing code that is maintainable and production-ready. You will have the opportunity to influence technical decisions, improve engineering practices, and mentor other developers on the team. We value someone who can move confidently between frontend, backend, databases, APIs, and AWS infrastructure. This is a great opportunity for a developer who wants meaningful impact, technical variety, and room to grow in a collaborative environment. If you are passionate about building elegant software and taking products from concept to production, we would love to hear from you.

Jesteśmy agencją tworzącą strony internetowe dla klientów z branży medycznej i beauty w Polsce. Szukamy 1-2 osób do długoterminowej współpracy. Model jest prosty — my dostarczamy brief, materiały, teksty i zdjęcia, Ty projektujesz i wdrażasz stronę. Rozliczenie projektowe B2B, faktura po odbiorze każdego projektu. Zależy nam przede wszystkim na estetyce. Strony dla klinik mają swój język wizualny — minimalizm, czyste układy, premium typografia, booking na pierwszym planie. Szukamy kogoś kto to rozumie i ma to w portfolio, nie kogoś kto dopiero chce spróbować w tej branży. Stack zostawiamy do Twojej decyzji — pracuj w czym dowozisz najlepsze efekty. Preferujemy osoby które sprawnie używają narzędzi AI do budowania stron (Lovable, Bolt, v0, Framer AI) — to dla nas duży plus. Nie szukamy kogoś kto klikał w Elementorze przez 5 lat. Szukamy kogoś kto dowozi efekt. Jeśli chcesz aplikować, wklej jeden konkretny link do strony którą zrobiłeś dla kliniki, gabinetu, salonu lub podobnego klienta z branży medycznej albo beauty. To jedyny warunek — bez przykładu z tej niszy nie odpiszemy.

Poszukuję osoby z doświadczeniem w WordPress i WooCommerce do wprowadzania bieżących zmian oraz dalszego rozwoju sklepu internetowego. ZAKRES PRAC: ✅ Dopasowanie i optymalizacja wielkości zdjęć ✅ Podmiana oraz edycja zdjęć na stronie ✅ Wymiana obecnych ikon na bardziej premium i nowoczesne ✅ Poprawa responsywności strony (mobile, tablet, desktop) ✅ Instalacja, konfiguracja i optymalizacja następujących wtyczek: WP Rocket Rank Math Pro Imagify Perfmatters LiteSpeed Cache (jeżeli będzie kompatybilna z hostingiem) ✅ Konfiguracja SEO przy użyciu Rank Math Pro ✅ Dodanie produktów do sklepu WooCommerce ✅ Drobne poprawki wizualne i estetyczne ✅ Optymalizacja strony pod Google PageSpeed Insights i Google Lighthouse ✅ Poprawa wyników Core Web Vitals WYMAGANIA: • Doświadczenie z WordPress i WooCommerce • Bardzo dobra znajomość Rank Math Pro • Znajomość optymalizacji szybkości stron internetowych • Umiejętność poprawy wyników Google PageSpeed Insights • Dbałość o estetykę i szczegóły • Terminowość i dobra komunikacja 📌 Interesuje mnie stała, długoterminowa współpraca Proszę o przesłanie emaila na [email protected] wraz z: krótką informacją o doświadczeniu, portfolio wykonanych realizacji, orientacyjną stawką godzinową lub za wykonanie powyższych prac. Strona dotyczy marki premium z branży e-commerce, dlatego zależy mi na wysokiej jakości wykonania i estetyce Interesuje mnie zlecenie na cenę luz rozliczenia za pomocą stawki godzinnej Dziękuję.

We have created a backend part of our system and vibed out the frontend. Basing on this and on a new design of the user interface we will want to re-develop the frontend part of our application. Assume 1 month full time development for price estimation.

We are looking for an experienced and creative Full-Stack Web Developer to build a high-quality, modern, and scalable website completely from scratch. This is not a template customization project. We need someone who can help architect, design, develop, and deploy a professional website with excellent performance, SEO, security, and user experience. If you have a strong portfolio of custom-built websites and can transform ideas into polished digital products, we'd love to hear from you. Responsibilities - Build a responsive website from the ground up - Create modern, clean, and visually appealing UI/UX - Develop frontend and backend functionality - Implement SEO best practices - Optimize performance and Core Web Vitals - Ensure cross-browser and mobile compatibility - Integrate third-party APIs when necessary - Set up CMS or admin dashboard (if required) - Deploy and configure production environment - Follow security best practices

We are looking for an experienced Full-Stack Developer to build a modern, scalable, and user-friendly online electronics store from the ground up. The platform will sell consumer electronics and related products, providing customers with a seamless shopping experience across desktop and mobile devices. The ideal candidate should have experience building e-commerce platforms, integrating payment gateways, implementing secure authentication systems, and developing responsive user interfaces.

We are seeking an experienced frontend developer to support the development and integration of an EVM-based decentralized application. The project involves building secure smart contracts, connecting them to an existing Next.js application, and ensuring that wallet connections, signatures, transactions, events, and contract data are handled reliably. ## Project Tasks * Develop and update Solidity smart contracts based on provided specifications. * Integrate contracts with a Next.js and TypeScript application. * Implement wallet connection, network switching, transaction submission, signature verification, and transaction-status handling. * Build reusable contract interaction modules using viem, wagmi, ethers.js, or equivalent tools. * Create deployment and contract-verification scripts. * Write unit, integration, fuzz, fork, or invariant tests using Foundry or Hardhat. * Diagnose contract reverts, gas-estimation errors, RPC issues, and wallet-integration problems. * Review the implementation for security risks, edge cases, gas usage, and code quality. * Document contract interfaces, deployment steps, configuration requirements, and integration flows. ## Required Experience * Strong Solidity and EVM development experience. * Experience with Foundry or Hardhat. * Experience integrating smart contracts with Next.js and TypeScript. * Knowledge of viem, wagmi, ethers.js, wallets, signatures, events, and token standards. * Understanding of access control, contract security, transaction lifecycle, and testing practices. * Ability to produce maintainable code and clear documentation. Experience with DeFi, attestations, registries, decentralized identity, account abstraction, or upgradeable contracts is helpful. ## Deliverables * Completed Solidity contracts and application integrations. * Automated test coverage. * Deployment and verification scripts. * Technical documentation. * Source code submitted through the agreed repository workflow.

I am looking for an experienced software development company or a team of .NET developers to implement an MVP module for a SaaS platform in the cybersecurity domain. The project involves developing a new module responsible for X.509 certificate lifecycle management and integrating it with an existing web platform. This is not a greenfield project—the application architecture, authentication, database, and core infrastructure are already in place. Scope of Work The project includes implementation of the following functional modules: Dashboard Certificate Authority Certificates Pending Requests (approval workflow) Certificate Monitoring Notifications Automatic Certificate Renewal Integration with existing platform modules A functional specification describing the business requirements and project scope is attached. Preferred Technology Stack C# ASP.NET Core Blazor PostgreSQL Project Schedule Planned project duration: July 31, 2026 – September 2, 2026 (approximately 5 weeks). Please confirm your availability for this time frame or propose an alternative schedule. Please include in your proposal Estimated project cost Proposed implementation timeline Team composition Experience with .NET projects Experience with microservices and distributed systems Examples of similar commercial projects Preferred collaboration model Technical documentation, architecture details, and access to the existing source code repository will be provided only to the selected contractor after signing a Non-Disclosure Agreement (NDA). I look forward to reviewing your proposal

At EyeLabX, we’re building the first eye wellness ecosystem that combines digital health, token incentives, and community governance. We believe healthy screen habits should be rewarded, and that users, doctors, and developers should co‑own the future of digital eye care. We are a small, remote‑first, early‑stage team. Our first product is a desktop app that helps people reduce eye strain. Our roadmap includes a token reward system, a DAO for community decisions, and eventually a platform where users can securely share eye health data with verified doctors and earn rewards for participating in better treatment outcomes. We’re looking for a Founding Blockchain & Full-Stack Developer to take ownership of our token infrastructure, smart contracts, and the Web3 frontend that connects users to rewards and governance. Our Mission To make eye wellness effortless, rewarding, and trustworthy – by putting users in control of their data and their incentives. Our Values (How We Work) These aren’t posters on a wall. They are the filters we use to make decisions. - Ship, then iterate. We value working software over endless planning. But we never trade security for speed – especially when user funds or data are involved. - Own the outcome. You build it, you run it, you learn from it. No hand‑offs to invisible teams. - Ask “what could break?” We proactively look for edge cases, especially in smart contract logic and reward distribution. We don’t wait for an exploit to care. - Build with transparency. Our code, our roadmap, and our mistakes are shared openly with our community. We trust that this earns real loyalty. - Stay small, think big. We prefer a handful of focused, high‑ownership engineers over a crowded room of bystanders. The Role: Founding Blockchain & Full-Stack Developer You will be the first dedicated blockchain engineer on the team. You will work directly with the founder and eventually collaborate with external auditors and community contributors. What you’ll own: 1. Smart Contract Development (EVM)

We are looking for somebody to create a simple web application that would deploy selected by a user LLM model on vLLM, on OVH infrastracture. Requirements: - python backend - next.js, react, tailwind on the frontend The application should allow setup of required delployment parameters as well.

We are looking for a freelancer, B2B contractor, small team, or gamedev studio to develop a technical PoC for a deterministic skill-based competitive gaming platform. The purpose of the PoC is to demonstrate that the gameplay operates without any element of randomness, under identical conditions for all players, with the ability to replay the session, verify player inputs, and prepare technical evidence materials for a regulatory review process. The scope includes a simple arena or mini-game built in Unity, preferably using Photon Quantum or an equivalent deterministic architecture, input recording, replay/ghost mode, state/hash logging, a fixed map, fixed rules, no RNG, a demonstrable build, and technical documentation. Required experience includes Unity, C#, multiplayer systems, deterministic simulation, replay systems, lockstep/rollback architecture, or Photon Quantum/Fusion. An NDA will be required before sharing the full brief. Full IP assignment for the source code, documentation, and builds will also be required.

We are a Brazilian IT team building software and IT solutions for clients across the European Union. Our developers are experienced and consistently deliver high-quality work. Because our team is based a few hours behind Central European Time, we are looking for a European-based partner who can be present during EU working hours and ensure communication with our clients stays clear, responsive, and local. We are looking for an EU-based Client Partner to join us long-term on a B2B basis. You will be our European point of contact — joining client calls, relaying requirements to our team, and making sure projects move forward smoothly within European working hours. Our Brazilian team takes care of the technical delivery; your focus is communication and coordination rather than development. What we offer We offer a long-term, stable collaboration rather than a one-off project, giving you the chance to work directly with EU companies as our European representative. You'll enjoy flexible remote work within EU hours, and a B2B partnership with clear, predictable monthly payments. To apply, please send us a short introduction about yourself and your English level, along with your country and timezone, and your expected monthly B2B rate in EUR.

StableNaira is looking for a Senior Blockchain Engineer to build secure fintech infrastructure for payments, wallet integrations, liquidity movement, and digital asset settlement. Responsibilities * Develop, test, and maintain Solidity smart contracts. * Build backend services, APIs, and transaction-processing systems. * Integrate wallets, blockchain APIs, and EVM-compatible networks. * Improve gas efficiency, transaction reliability, and settlement performance. * Support architecture planning, security reviews, testing, CI/CD, monitoring, and documentation. * Troubleshoot blockchain, backend, and distributed-system issues. * Collaborate with engineering, product, DevOps, and compliance teams. Requirements * 4+ years of professional software development experience. * Strong Solidity, smart contract, and EVM knowledge. * Backend experience with Node.js, TypeScript, Go, or Python. * Experience with Web3 libraries, wallets, APIs, databases, and REST services. * Understanding of smart contract security, gas optimization, and reliable transaction processing. * Familiarity with Docker, Kubernetes, distributed systems, or CI/CD. * Strong communication, debugging, and independent remote-working skills. Nice to Have Experience with stablecoins, DeFi, fintech, Layer 2 networks, bridges, audits, high-availability systems, or open-source blockchain projects. Work Arrangement Fully remote, direct engagement with StableNaira. Full-time or long-term contract options are available.

Build a sandbox with dockerfile where coding AI agents will be trained with proper rubrics

I am looking for a reliable freelance technical assistant to help with small software testing, browser automation, API checking, and documentation tasks. The work may include testing web applications, checking forms and workflows, preparing simple automation scripts, reviewing API responses, documenting bugs, and helping organize technical findings in a clear way. This is suitable for someone with free time, good communication, and basic coding or QA experience. The work will be remote and task-based. I prefer someone who can communicate clearly, follow instructions, and provide regular updates. Important: all work must be done legally and professionally. No account sharing, identity misuse, or representing another person.

I need a graphic designer to prepare a print-ready file for a flexible packaging pouch (doypack) based on my existing design. What's needed: - Convert my existing design file into a print-ready PDF matching the supplier's exact technical specifications (attached) - Convert all fonts to curves - Convert colors to CMYK (except white elements) - Set up white ink on a separate, properly named layer with overprint settings - Add correct bleed (5mm top/bottom, 2mm left/right) and respect safe area requirements - Remove any printing marks not required by the supplier I will provide my current design file and the supplier's full specification sheet. This is a single packaging design (one pouch, two language versions - Polish and German - if both are needed, can discuss). Budget: 100 PLN Please reach out if you have experience with print-ready file preparation for flexible packaging/food packaging.

Cześć! Mój klient sprzedaje domy na ekskluzywnym osiedlu pod miastem. Budżet na adsy jest, ale obecny landing page nie oddaje jakości produktu. Szukam ogarniętego designera w Figmie, który potrafi w "premium" i dobrze rozumie, czym jest konwersja. Co robimy: One-pager (desktop + mobile). Nie sprzedajemy "10 osobnych domów", ale całą inwestycję: lifestyle i otoczenie, a dopiero potem warianty domów (do 10 typów) i budujemy ścieżkę do leada. Struktura (~10 sekcji): - Hero section – lifestyle, mocny offer, CTA - Manifest inwestycji (editorial) – nasza filozofia - Vibe osiedla – fotostory otoczenia - Bento grid „Co kryje inwestycja” – infrastruktura, lokalizacja, smart home - Showcase domów – slider z wariantami (foto, metraż, działka, cena) - Karta domu – galeria, floor plany (rzuty), parametry - Lokalizacja – mapa, POI (udogodnienia w okolicy), dojazd - Proces zakupowy – etapy transakcji - FAQ - Footer + formularz (lead gen) Stylistyka: Mix siatki bento, minimalizmu i editorial. Dużo white space'u, mocna typografia, look & feel premium – zero "tanich" rozwiązań. Referencje z Dribbble podeślę wybranej osobie. Wynik i Timeline: Gotowe widoki w Figmie (RWD) do wdrożenia (dev handoff) + uporządkowany UI kit (style, komponenty). Czas: 3–4 tygodnie od pierwszych wireframe'ów po finalne makiety. Cały content (zdjęcia, rzuty, copy) dostarczam. Jeśli zaiskrzy, możliwa dłuższa współpraca! Jak aplikować: Napisz krótko o sobie i podeślij 2–3 linki do projektów (real estate, automotive, usługi premium). Szukam realnych case'ów (gotowe strony lub klikalne prototypy), a nie tylko ładnych obrazków wyrwanych z kontekstu.

Ice Fishing, Chicke Road and others