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4.0
4.0
100%

Dhaka, Bangladesh
$25 USD per hour
100% Work Satisfaction ***Guaranteed*** I provide services: ================================= => Web design & wordpress development => Responsive web design => Website customization => Landing page design => PSD to HTML/Wordpress My expertise in CMS: ================= => WordPress => Joomla => vBulletin => phpBB => MyBB => OJS (Open Journal Systems) => Journal Publication => Oxwall => and many more Other services: => Web Host => Website transfer => Domain Migration => Website Clone I am also expert in domain, hosting, and design related any matter or issues. ***Why Should You Hire ME??? => I always give my 100% effort to do my job. => Clients satisfaction is my first concern. => Believe in Quality Not Quantity => I can understand the requirements of any given project easily. ................................................................................................................. Best Regards, Shahadat Hossain codeXcafe.net

9.4
9.4
99%

Manchester, United Kingdom
$34 USD per hour
Dream Solutions is a team of highly skilled developers, designers, and technology professionals dedicated to delivering exceptional digital solutions. We combine technical expertise, creativity, and a client-focused approach to provide high-quality services and products that meet the highest industry standards. Our team has extensive experience working with a wide range of technologies, frameworks, and software stacks, enabling us to develop tailored solutions that align with our clients unique business goals. Whether it's web development, mobile applications, custom software, UI/UX design, or cloud-based solutions, we are committed to delivering reliable, scalable, and innovative results on time and within budget. At Dream Solutions, we pride ourselves on building long-term partnerships by consistently exceeding expectations through quality, efficiency, and professional excellence.

5.3
5.3
89%

Dhaka, Bangladesh
$30 USD per hour
🎨 **Branding & Design** Logos, Brand Identity, Typography, UI/UX (Figma, Adobe XD), Web & E-commerce Design, Packaging, Print Design, Motion Graphics, Video Editing, 2D/3D Animation, Blender, Maya, 3ds Max, Cinema 4D, Adobe Creative Suite, AI Art (Midjourney, Stable Diffusion, DALL·E, Flux, Leonardo AI), Product Visualization, Digital Illustration. 💻 **Software Development & DevOps** Web: React, Next.js, Vue, Nuxt, Angular, JavaScript, TypeScript, jQuery, Node.js, Express, NestJS, PHP, Laravel, Django, Flask, FastAPI, Python, C#, ASP.NET, .NET Core. Mobile: Flutter, React Native, Swift, Kotlin. Desktop: Electron, Qt, WPF. APIs, GraphQL, Microservices, SaaS, CMS, PWAs. DevOps: Docker, Kubernetes, Helm, GitHub Actions, GitLab CI/CD, Jenkins, Terraform, Ansible, Pulumi, AWS, Azure, GCP, Cloudflare, Prometheus, Grafana, Datadog, ELK, DevSecOps, SRE. ⛓️ **Blockchain & Web3** Solidity, Rust, Ethereum, Solana, Polygon, Smart Contracts, DApps, DeFi, NFT Marketplaces, Crypto Wallets, Chainlink, IPFS. 🤖 **AI, Data & Automation** TensorFlow, PyTorch, Scikit-learn, OpenCV, YOLO, LangChain, LangGraph, LlamaIndex, RAG, Hugging Face, GPT, Claude, Gemini, DeepSeek, Fine-Tuning, Pinecone, Milvus, ChromaDB, MLflow, Kubeflow, Snowflake, BigQuery, Power BI, Tableau, ETL. 🎥 **Generative AI** Runway, Kling, Veo, Synthesia, Pika, Luma AI, ElevenLabs, Suno, Voice Cloning, Stable Diffusion, Midjourney. 💬 **AI Chatbots** OpenAI, LangChain, Dialogflow, Rasa, Botpress, WhatsApp, Slack, Telegram, Discord Bots, Zapier, Make, n8n, Power Automate. 🎮 **Game Development** Unity, Unreal Engine, Godot, Roblox Studio, Construct, C#, C++, Multiplayer, Photon, PlayFab, Steam SDK, Unity XR, ARKit, ARCore, Oculus, Meta Quest, Blender, Maya, ZBrush, Substance Painter. 🏗️ **Engineering & Architecture** Electrical: AutoCAD Electrical, ETAP, MATLAB, Simulink, Proteus, Altium, KiCad, PLC, SCADA. Mechanical: SolidWorks, CATIA, Creo, Inventor, Fusion 360, Siemens NX, ANSYS, Abaqus, COMSOL. Civil & Architecture: AutoCAD, Civil 3D, Revit, ETABS, SAFE, SAP2000, STAAD.Pro, Tekla, Rhino, SketchUp, Lumion, Twinmotion, Enscape, V-Ray, BIM. 🔒 **Enterprise Solutions** Cybersecurity, Penetration Testing, SOC2, Selenium, Cypress, Playwright, Odoo, SAP, Microsoft Dynamics, Salesforce, HubSpot, Shopify, Webflow, SEO/SEM, CRM, Lead Generation. 🚀 **Why Aesthetic Logic** A full-service technology partner delivering branding, software, AI, cloud, blockchain, engineering, game development, and enterprise solutions through expert designers, developers, DevOps engineers, AI specialists, architects, and engineering professionals.

5.5
5.5
100%

VILLANUEVA, Colombia
$30 USD per hour
I am a Full-Stack Developer with many years of experience building scalable web and mobile applications for startups, businesses. I specialize in designing and developing end-to-end solutions, from frontend user interfaces to backend APIs, databases, and cloud deployment. My goal is simple: deliver reliable, scalable, and high-performance software that helps businesses grow.

4.5
4.5
100%

Rawalpindi, Pakistan
$20 USD per hour
I’m PhD in Biological Sciences and a specialist in academic publishing with 13+ years of hands-on experience in Open Journal Systems (OJS), scientific journal policy development, and indexing consultancy (Scopus, Web of Science/Clarivate, DOAJ). I lead EScience Press, a Crossref Sponsoring Member currently managing DOI services for 100+ publishers across South Asia. I’ve successfully launched and managed 30+ OJS-based platforms for universities, scientific societies, and publishers worldwide. My core strengths include: OJS installation, plugin integration & customization Editorial workflow automation and metadata optimization Journal indexing strategy for Scopus, Web of Science (ESCI/SCIE), DOAJ Editorial policy development, reviewer workflows, and compliance audits As a researcher and journal editor myself (37 full-length papers, IF: 60+), I understand both technical and academic sides of journal publishing. I also serve on editorial boards of several indexed journals and have helped multiple titles achieve Scopus and ESCI inclusion. If you're looking to build or improve your journal's technical backend, editorial standards, or indexing prospects — I bring the rare combination of academic insight and technical execution to get it done right.

2.0
2.0
100%

Poza Rica de Hidalgo, Mexico
$15 USD per hour
Ingeniero en Tecnologías de la Información y Comunicación (TIC) con experiencia en el desarrollo de software de alta calidad utilizando metodologías ágiles y las últimas tecnologías del mercado actual. Comprometido con la innovación, la mejora continua y la implementación de soluciones escalables y eficientes, así como también en la integración de herramientas modernas para asegurar el rendimiento, la seguridad y la usabilidad de las aplicaciones.

0.8
0.8
100%

Akure, Nigeria
$30 USD per hour
I build self-healing automation systems and scalable SaaS backends. If you are looking for a developer who disappears after the project, I am not your guy. But if you need a Senior Automation Architect who writes clean, documented Python and JavaScript code to solve expensive business problems, we should talk. I combine the speed of Low-Code (n8n) with the power of Custom Code (FastAPI/React) to deliver solutions that are 10x faster and cheaper than traditional agencies. 🔥 Top Services: ➤ AI Agents: Custom bots (OpenAI/Claude) that handle Support & Sales. ➤ n8n Workflows: Complex logic, loops, error handling, and API integrations. ➤ SaaS Development: Python (FastAPI) Backends + React Frontends (Dockerized). ➤ Scripting: Web scrapers, data cleaning, and cron jobs. 💻 Tech Stack: ➥ Languages: Python, JavaScript (Node.js), SQL. ➥ Frameworks: FastAPI, Flask, React.js. ➥ Infra: Linux, Docker, Nginx, AWS/DigitalOcean. Why Hire Me? ✔ 100% Completion Rate Goal: I don't take jobs I can't finish. ✔ Clear English: No miscommunication. ✔ Post-Project Support: I ensure your system stays online. Click Hire Me and let's turn your requirements into working software.
An Open Journal Systems developer is a software specialist who installs, customizes, and maintains OJS, the open-source journal publishing platform built by the Public Knowledge Project for academic and scholarly publishing. These freelancers configure submission workflows, design custom themes, integrate plugins, and migrate journals between OJS versions so editorial teams can publish peer-reviewed content reliably online.
Open Journal Systems (OJS) powers thousands of scholarly journals worldwide, and a freelance OJS developer is the technical bridge between editorial staff and the publishing platform. They handle everything from server setup and PHP configuration to custom theme development, plugin coding, and DOI registration with Crossref.
Hiring an experienced OJS specialist matters commercially because journal indexing, citation tracking, and reader trust all depend on a properly configured platform. A misconfigured installation can break submissions, lose metadata, or fail compliance with indexing services like DOAJ, Scopus, or PubMed Central. A skilled developer protects the journal's reputation and keeps editorial workflows running.
OJS freelancers cover the full lifecycle of a journal platform, from initial deployment to ongoing maintenance. Typical deliverables include:
Strong OJS developers are fluent in the underlying stack that powers the platform. Expect proficiency in PHP, MySQL or PostgreSQL, JavaScript, HTML, CSS, and the Smarty templating language. Familiarity with Git, Composer, command-line server administration, and Apache or Nginx is standard.
Adjacent skills that come up regularly include JATS XML production, BITS book schema work for Open Monograph Press, Crossref API integration, ORCID authentication, and front-end frameworks for theme customization. Many OJS developers also handle related Public Knowledge Project software such as Open Conference Systems and Open Preprint Systems.
OJS is used primarily by:
Common projects include launching a new open-access journal, rescuing a stalled OJS installation, redesigning an outdated journal site, or preparing a journal for indexing applications.
Look for developers with verifiable OJS experience, not just general PHP backgrounds. Strong candidates can point to live journal sites they have built or maintained, demonstrate familiarity with both OJS 2 and OJS 3 codebases, and understand scholarly publishing standards like Crossref, COUNTER, and OAI-PMH.
Portfolio markers to look for include custom OJS themes in production, contributed plugins on the PKP plugin gallery or GitHub, successful version migrations, and journals indexed in DOAJ or Scopus. Contributions to the PKP community forum or GitHub repositories signal deep platform knowledge.
Sample interview questions you can use directly:
Freelancer.com hosts a global pool of OJS specialists, PHP developers, and scholarly publishing experts who have completed projects for universities, research institutes, and independent journals across every continent. Because OJS expertise is niche, having access to a worldwide talent pool dramatically improves your chances of finding a developer with the exact version experience, language capability, and domain knowledge your journal requires.
Clients post a project on Freelancer.com, set their own budget, and receive competitive bids from vetted freelancers with verified profiles, public ratings, and reviewable portfolios. Milestone Payments hold funds securely until you approve each stage of work, which is particularly useful for multi-phase OJS engagements like migrations or theme builds.
Ready to launch, migrate, or modernize your scholarly journal?
Hiring an OJS developer works best when you treat the project as a publishing engagement, not just a coding task. The clearer you are about your journal's current state, target indexing services, and editorial workflow, the better the bids you will receive. Below is the process most clients follow.
The brief is the single biggest determinant of bid quality, because OJS work varies enormously between a fresh install and a complex migration. A clear post filters for developers who genuinely match your version, hosting, and indexing requirements. Head to the
Bids on a well-written OJS brief are short proposals that reveal how the developer interprets your journal's needs. A strong proposal references your specific OJS version, asks intelligent clarifying questions about workflow or indexing, and outlines a realistic phased approach rather than a single lump estimate.
Final selection combines proposal quality with profile evidence. For OJS, consistency across multiple journal builds matters more than a single impressive site, because the platform rewards developers who have seen many editorial workflows and indexing requirements.
A fresh OJS installation with basic configuration can be completed in a few days, while a full custom theme build, plugin development, or OJS 2 to OJS 3 migration usually takes several weeks. Timeline depends on content volume, customization depth, and how much editorial workflow configuration is required.
Yes. Many clients hire OJS freelancers for single tasks like a version upgrade, a Crossref plugin fix, a DOAJ application audit, or a theme tweak. You can post a tightly scoped project and receive bids specifically for that work without committing to a long-term engagement.
A general PHP developer can read OJS code but may not understand scholarly publishing workflows, JATS XML, OAI-PMH, or Crossref deposit formats. An OJS specialist already knows the plugin architecture, the editorial role system, and the indexing requirements, which dramatically reduces ramp-up time and the risk of breaking core functionality.
Editorial teams can handle day-to-day journal management once the platform is configured, but installation, upgrades, theme work, plugin development, and integrations almost always require a developer. Many journals keep an OJS freelancer on retainer for periodic maintenance and security updates.
Yes. Experienced OJS developers regularly migrate journals from WordPress, custom CMS systems, static HTML archives, or legacy OJS 2 installations into modern OJS 3 environments while preserving article metadata, DOIs, issue structure, and back content.

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