
Open
Posted
•
Ends in 4 days
Paid on delivery
# Freelance Full-Stack Developer: Directus and LimeSurvey Integration We are looking for an experienced full-stack developer to build a secure, multilingual research portal and connect it to existing LimeSurvey questionnaires. ## Project scope * Build a participant and practitioner web portal * Add language selection, study information and electronic consent * Configure Directus with PostgreSQL * Create practitioner referrals and pseudonymous participant IDs * Manage pre-assessment, post-assessment and eight-week follow-up workflows * Connect Directus to existing LimeSurvey questionnaires using the LimeSurvey API * Automatically create survey tokens and launch the correct questionnaire language * Update Directus when a LimeSurvey questionnaire is completed * Schedule follow-up assessments and reminders * Configure secure user roles, permissions and audit records * Ensure names, emails and telephone numbers are not used as research identifiers or transferred to LimeSurvey ## Required experience * Directus configuration and development * React, [login to view URL], Vue or a comparable frontend framework * PostgreSQL * LimeSurvey RemoteControl API * REST APIs, webhooks and workflow automation * OAuth 2.0, OpenID Connect or Keycloak * Docker and secure server deployment * Role-based and record-level access controls * Multilingual web applications Experience with healthcare, clinical research, HIPAA, GDPR or privacy-sensitive systems is strongly preferred. The workflow has been created and is clear. The LimeSurvey Questionnaires are created in each language. it is a matter mostly of creating the front end, backend authorization etc in Directus and then the connections with LimeSurvey. Results must be testable and complete to be considered a success. Please include examples of relevant Directus projects, secure portals or LimeSurvey integrations.
Project ID: 40621303
276 proposals
Open for bidding
Remote project
Active 14 hours ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
276 freelancers are bidding on average $453 USD for this job

Hello, I’ve worked on privacy-sensitive portal builds and API-driven workflows, and your Directus + LimeSurvey setup is very clear to understand. The key part here is making the referral, consent, token creation, questionnaire launch, and follow-up flow work securely without exposing identifiers. I can help you build the portal foundation, multilingual flow, and integration logic in a clean and maintainable way. If you want, I can also outline the implementation phases before we begin.
$250 USD in 7 days
9.4
9.4

Hi there, We understand you're looking to build a secure, multilingual research portal with Directus and integrate it with existing LimeSurvey questionnaires, ensuring a seamless experience for participants and practitioners while maintaining data privacy. With our expertise in Directus configuration, React, and PostgreSQL, along with experience in REST APIs and workflow automation, we're confident in delivering a tailored solution. Our portfolio includes a learning platform website for children built with PHP, WordPress, and custom design, showcasing our ability to handle complex, user-friendly interfaces. We've also worked on e-commerce solutions with integrated payment systems, demonstrating our capability in secure transaction handling. One question: Have you considered any specific design or user experience guidelines for the portal that would need to be integrated into the development process? Feel free to message us to discuss the details! — Webbook Studio
$490 USD in 10 days
9.2
9.2

Drawing on my extensive background in web and app development, which spans over 18 years, my firm, CnELIndia, is perfectly positioned to exceed your expectations with regards to this project. I am well-versed in the technologies necessary for this job, including Directus, LimeSurvey Integration, and APIs like the LimeSurvey RemoteControl API. I have a keen understanding of Docker and secure server deployment, ensuring that your participants' personal data will be highly protected while using the platform. My proficiency with PostgreSQL and MySQL will be invaluable when configuring Directus and managing data in your multilingual research portal. Moreover, as a healthcare technology expert who understands the importance of HIPAA and GDPR compliance, my team at CnELIndia can confidently handle any privacy-sensitive tasks associated with your project. Not only do we have all the skills necessary to undertake this job successfully but our commitment to delivering on time and within budget is second to none. We also pride ourselves on ensuring our clients can fully test their projects before they are finalized, giving you peace of mind that all aspects will work as intended from start to finish. In choosing me for this important venture, you're not just hiring a freelancer; you're welcoming a partner who will bring practical solutions and expandable possibilities through sound technical expertise. I look forward to bringing your vision to fruition!
$350 USD in 7 days
9.0
9.0

Hi, With nearly two decades of experience in web and mobile app development, I am confident in my ability to deliver your Multilingual Research Portal and Integration project with utmost precision and professionalism. At IT Flex Solutions India, we have successfully completed 483+ projects and have the relevant skills you're looking for. My proficiency in Directus configuration, PostgreSQL, REST APIs, and more align perfectly with your project requirements. In addition to my technical expertise, I bring a deep understanding of privacy-sensitive systems as well as HIPAA and GDPR regulations- a crucial advantage for building healthcare portals like yours. I am well-versed in managing pre-assessments, post-assessments, eight-week follow-ups and experienced in creating secure role-based access controls to protect sensitive data. Moreover, your requirement to ensure research identifiers remain pseudonymous integrates seamlessly with my skills. A successful integration is dependent on meticulous planning and flawless execution. In this aspect as well, IT Flex Solutions stands out. We've developed robust server deployment strategies including Docker to ensure the environment is secure and ready for testing without any obstacles. As you need to ensure results are testable and complete- you can trust us to provide just that alongside reliable post-deployment support to guarantee smooth functioning. Thanks, SBM
$650 USD in 18 days
9.1
9.1

Hi — Elias here from Miami. I see you're looking to integrate Directus with LimeSurvey for a multilingual research portal. Your goal seems to be building a reliable platform that effectively manages user data and survey responses. The real technical challenge often revolves around ensuring smooth data flows and managing user roles effectively. A common issue in such integrations is maintaining data integrity while handling various language inputs. The tricky part is usually designing the architecture to support future growth without compromising performance. For a practical approach, I would implement a modular architecture that separates core functionalities. This allows for easy adjustments or expansions down the line. Using Docker for containerization will enhance stability, while proper state management ensures reliable operations across different languages. I’ve worked on similar integration projects, focusing on user-centered design and robust backend solutions. My experience with PHP, NoSQL, and authentication systems will help mitigate risks. A few questions to better understand the scope: Q1 – What specific user roles and permissions do you envision for this portal? Q2 – How do you plan to handle data collection and reporting across different languages? Q3 – Are there existing systems or APIs you need to integrate with? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$500 USD in 5 days
8.2
8.2

Hi there, I can build your secure multilingual research portal using Directus, PostgreSQL, and a modern frontend stack while integrating your existing LimeSurvey questionnaires through the RemoteControl API. I’ll handle participant/practitioner workflows, consent flow, pseudonymous IDs, role-based permissions, audit logging, automated survey token generation, completion syncing, reminders, and secure deployment following privacy-focused practices. Question: Do you already have the Directus instance, PostgreSQL environment, and authentication provider (Keycloak/OAuth/OpenID Connect) selected, or would you like me to recommend and configure the complete backend architecture? Kindly send me a message to discuss more in detail. Thanks.
$300 USD in 6 days
8.4
8.4

Hi, I reviewed the request to build a secure, multilingual research portal in Directus with participants and practitioners, plus integration to existing LimeSurvey questionnaires via API and token-based launches. I’ll configure Directus with PostgreSQL, implement Keycloak-enabled authorization and role-based access, add language selection with e-consent, create pseudonymous participant IDs, and orchestrate pre/post and eight-week follow-up workflows. Then I’ll connect Directus to LimeSurvey using REST APIs, webhooks, and workflow automation to generate tokens, launch the correct questionnaire language, and write completion updates back to Directus. I focus on audit records, privacy-safe identifier handling, clean configuration, and reliable testing of end-to-end survey completion. Let’s discuss here now.
$250 USD in 30 days
8.4
8.4

--- Directus + LimeSurvey Research Portal Development --- I can help build the participant/practitioner portal and connect the existing LimeSurvey questionnaires through the required API workflows. Here's my approach: → Build the multilingual frontend with Directus, PostgreSQL, and the preferred frontend framework. → Configure authentication, roles, permissions, pseudonymous participant IDs, and audit records. → Integrate LimeSurvey API for token creation, language-specific questionnaires, completion updates, and follow-up workflows. → Implement reminders, referrals, consent, and strict separation of personal data from research identifiers. → Provide Docker deployment, testing, documentation, and full handover. Flow Consent → Participant ID → Pre-Assessment → LimeSurvey → Completion Update → 8-Week Follow-up → Reminders Question Do you already have the Directus and LimeSurvey environments deployed, or should we set up both as part of the project? Let's connect... Thanks
$680 USD in 16 days
8.2
8.2

Hi, I have over 5+ years of experience in both frontend and backend development. I will do the specified tasks. Key Areas of Expertise: a) Full-Stack Development: Proficient in both frontend and backend technologies Frontend: Next, Js, ReactJS, Bootstrap, JavaScript, jQuery Backend: Laravel, CodeIgniter, Node.js b) API Integration: Experienced in integrating and working with APIs to enhance application functionality. c) Microservices: Skilled in developing and integrating microservices for scalable and efficient solutions. d) Database Management: Competent in managing databases with Postgresql, MySQL, MongoDB, and Oracle. d) Server Handling: Adept at handling server environments such as AWS, Google Cloud, VPS, Apache, and Nginx. Lets connect in chat so that We discuss further. With Regards, Sai
$280 USD in 10 days
7.7
7.7

I'll build the participant and practitioner portal on Directus with PostgreSQL: language selection, study information, e-consent capture, practitioner referrals, and pseudonymous participant IDs that never expose names, emails, or phone numbers to LimeSurvey. I'll connect to your existing LimeSurvey questionnaires through the RemoteControl API to auto-generate tokens and launch the correct language version, sync completion status back into Directus, and schedule the pre/post/8-week follow-up assessments with reminders. I'll set up role-based and record-level access control, audit logging, and secure OAuth2/OIDC or Keycloak authentication, and package the whole thing with Docker for secure deployment. Happy to walk through the participant ID and data-flow design in more detail once we align on the specifics.
$700 USD in 18 days
8.1
8.1

Approaching this project with over a decade's experience in Full-Stack development and a specialty in web application integration and security, I am confident I can deliver top-quality work on your multilingual research portal. Specifically, my expertise in Directus and LimeSurvey aligns seamlessly with your requirements. I have successfully deployed Directus with PostgreSQL, created secure web portals similar to what you require, and managed the integration of questionnaires using the LimeSurvey API. Beyond the specific technical skills requested, my experience with healthcare applications and privacy-sensitive systems will be invaluable for this project. I am well-versed in ensuring compliance with regulations like HIPAA and GDPR, an aspect crucial for handling sensitive patient data. Additionally, my proficiency in REST APIs, OAuth 2.0, OpenID Connect will greatly facilitate building secure user roles, permissions as well as facilitating audit records. Finally, I always prioritize consistent communication, high-quality of work and customer satisfaction. As we move forward, I'll ensure our lines of dialogue stay open to ensure that the portal built caters to all your needs precisely while offering value-added suggestions from an experienced viewpoint. Choose me for a service that combines professionalism, expertise and unquestionable commitment towards the success of your project.
$300 USD in 7 days
7.0
7.0

With over a decade of experience in WordPress and Laravel, I am no stranger to diving into complex, broken systems and delivering fast, effective solutions. Whether it's malware infections, plugin conflicts, or database corruption, I can guarantee you a same-day turnaround with a clear explanation of what went wrong and how I fixed it – just like I've done for numerous five-star-rated projects over the years.
$250 USD in 7 days
6.8
6.8

Hi there! I'm Markiyan, a full stack developer and CEO of a web agency, and I'd love to help you build this secure, multilingual research portal and integrate it with LimeSurvey. I understand you need a portal with language selection, study information, and electronic consent, all while ensuring secure user roles and permissions, particularly with experience in healthcare and clinical research. My team and I have experience with similar projects, including custom PHP development, PostgreSQL, and REST API integrations, and we've worked with multilingual web applications and secure portals. I can deliver a fully functional portal with Directus configuration, LimeSurvey API integration, and secure user management. One question: can you provide more details about the existing LimeSurvey questionnaires and how you envision the workflow automation for follow-up assessments and reminders? Feel free to message me to discuss the details! — Markiyan
$480 USD in 10 days
6.9
6.9

Your LimeSurvey API integration will fail GDPR compliance if participant tokens are logged in plaintext or if webhook callbacks expose PII during assessment transitions. This creates legal liability before your first participant enrolls. Quick questions - are you planning to run Directus and LimeSurvey in separate Docker containers with network isolation, or will they share a database layer? And what's your token expiration policy for the eight-week follow-up window? Here is the architectural approach: - DIRECTUS + POSTGRESQL: Build custom extensions for pseudonymous ID generation with audit trails that separate consent records from survey responses using role-based field visibility. - LIMESURVEY REMOTECONTROL API: Implement token creation workflow with encrypted participant mapping, automatic language routing based on Directus locale selection, and webhook listeners that update assessment status without exposing identifiers. - KEYCLOAK + DOCKER: Configure OAuth flows for practitioner and participant portals with separate permission scopes, deploy multi-container architecture with TLS termination, and implement record-level access controls that prevent cross-study data leakage. I've built HIPAA-compliant clinical data platforms for two healthcare SaaS companies that handled 200K+ patient records under regulatory audit. Let's schedule a 20-minute technical call to review your token encryption strategy and Docker network topology before implementation starts.
$450 USD in 10 days
7.3
7.3

Hi there, I noticed that you're looking for a developer to build a multilingual research portal integrated with LimeSurvey, and I'm equipped to tackle this project head-on. I have extensive experience with PostgreSQL and Directus configuration, which aligns perfectly with your requirements. My background includes integrating APIs and managing workflows for secure applications, ensuring compliance with regulations such as HIPAA and GDPR, making me well-suited for handling sensitive data processing.
$250 USD in 10 days
6.3
6.3

Hello! We can build a secure multilingual research portal and connect it to LimeSurvey. 1. Which part should we tackle first: portal, Directus setup, or LimeSurvey integration? 2. Do you already have the consent flow and role structure defined? — About us We are dZENcode – a full-cycle IT company for digital product development: from design and programming to integrations and post-release support. We build projects from scratch and also work on existing solutions that need further development, improvements, or technical support. You can find detailed information about our services and rates on our official website: https://dzencode.com. Please review it – after that, we can discuss the details and agree on the next step. ⚠️ After clarifying all details, we will define the scope, the suitable cooperation format – task-based, outsourcing, or outstaffing – and the final cost. Projects are guaranteed to reach release with us: • 10+ years providing IT services; • 90+ in-house specialists; • 250+ public reviews since 2015; • We support products under SLA after launch; • We work under NDA and a company contract!
$500 USD in 7 days
6.7
6.7

Hello!! I understand you need a secure multilingual research portal with Directus backend, LimeSurvey integration, participant workflows, and privacy-focused access management. Could you please share your preferred frontend technology for the portal? • Do you already have the Directus and LimeSurvey environments configured? • Which languages need to be supported in the first release? The solution will include Directus configuration with PostgreSQL, frontend development, secure authentication, role-based permissions, API integration with LimeSurvey, automated survey workflows, reminders, consent handling, and complete testing. Relevant experience includes building secure portals, REST API integrations, database-driven applications, multilingual platforms, and privacy-sensitive systems. The focus will be on creating a reliable research workflow where data security, usability, and automation work together smoothly. A well-structured portal will help simplify participant management while keeping your research process organized and scalable. Would love to discuss your workflow in chat and plan the implementation approach. Best regards Farhin B
$255 USD in 3 days
6.7
6.7

I am highly qualified for the Multilingual Research Portal and Integration project. I have extensive experience building scalable applications using Directus as a headless CMS and integrating it with external survey tools like LimeSurvey. My background includes managing complex data schemas in PostgreSQL and MySQL, ensuring seamless data flow between research instruments and centralized portals. I am proficient in Next. js and AngularJS for frontend development, and I regularly use Docker for containerized deployments and Keycloak for robust identity management. I can ensure your portal handles multilingual content efficiently while maintaining secure authentication across all services. I have previously developed custom Directus extensions and hooks to automate survey data ingestion.
$250 USD in 7 days
6.1
6.1

Hi there, Directus + LimeSurvey integration needs tight handling of pseudonymous IDs, multilingual survey launch, and completion callbacks. I’ve spent the last 4 years solving exactly this type of problem. I built a secure research portal with role-based access, consent flow, and API-driven survey token creation, and I delivered a multilingual intake system that synced questionnaire completion back into the source database without exposing personal identifiers. The real risk here is not the UI; it’s keeping research data separated from names, emails, and phone numbers while still making workflows reliable across Directus, PostgreSQL, and LimeSurvey. I’ll design the portal so participant records, referral records, and survey tokens stay isolated, then wire webhooks or polling to update Directus when assessments complete. I’ll also configure language-aware survey launching, follow-up scheduling, audit logging, and least-privilege permissions in a Dockerized deployment. I’ll keep the implementation modular and documented so consent, token generation, and reminders can be tested independently. Best regards, John allen.
$555 USD in 3 days
5.9
5.9

I understand you need a secure multilingual research portal connected to LimeSurvey with pseudonymous IDs and careful data handling. I’ve done similar work setting up research portals with Directus and PostgreSQL, integrating LimeSurvey via its API for automated survey tokens and multilingual support. To solve your problem, I will first configure Directus to handle participant/practitioner roles with strict access controls and audit logs. Then, I will set up workflows to manage the assessment schedule, generating and launching LimeSurvey tokens in the right language based on user preference. The portal will store only pseudonymous IDs, keeping personal data out of LimeSurvey, matching privacy requirements. I have a question about your follow-up reminders: Do you prefer email, SMS, or both? Also, should the system support rescheduling if a participant misses a follow-up? This type of integration is straightforward once API token flows and OAuth scopes are clear, and I can have a working prototype quickly. Ready to start building your portal with careful data separation and secure workflows.
$250 USD in 7 days
5.9
5.9

Toronto, Canada
Payment method verified
Member since Nov 6, 2025
$15-25 CAD / hour
$10-30 USD
$8-15 USD / hour
$250-750 CAD
$10-30 USD
$10-30 USD
$1500-3000 USD
$30-250 CAD
$8-15 USD / hour
₹1000000-1200000 INR
$30-250 USD
$30-250 USD
₹750-1250 INR / hour
$60-80 AUD
$15-25 USD / hour
₹750-1250 INR / hour
$750-1500 CAD
₹12500-37500 INR
$2-8 USD / hour
$250-750 USD
$30-250 USD
₹1500-12500 INR
₹12500-37500 INR
₹600-1500 INR
₹250000-500000 INR