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22 jobs
Posted 24 days ago

Create a clean Figma concept for my product landing page

Fixed price · €1,100Intermediate1 to 3 months

I need a simple but nice-looking landing page design in Figma for my little product. I already know the basic content, but I want help turning it into something that feels modern, trustworthy, and easy to understand. The scope is just one main page, with a…

FigmaUI DesignPrototypingWireframing
Payment not verifiedSwedenProposals: 5 to 10
Posted 25 days ago

Threat model and vulnerability check for a customer portal

Fixed price · €7,100Intermediate1 to 3 months

I have a customer portal with user accounts, file upload and some admin functions. I want a freelancer to make a threat model first and then check the most likely weak points. Please focus on the real risk, not only theory. The portal is already running, so I…

OWASPThreat ModelingVulnerability AssessmentSecure Code Review
Payment not verifiedGermanyProposals: 5 to 10
Posted 25 days ago

Help clean up my reporting data in SQL and dbt

Hourly · €40–€55IntermediateLess than 1 month

I have some messy sales and traffic data and I need help to make it more reliable. The job is to review a few SQL queries, improve one small dbt model, and help me understand why some numbers are changing from week to week. It is not a full data platform…

SQLdbtBigQueryPower BIData Modeling
Payment not verifiedFranceProposals: 5 to 10
Posted 26 days ago

ESP32 sensor prototype with MQTT logging

Fixed price · €130IntermediateLess than 1 month

We need a small, fixed-scope prototype for an ESP32 test board. Budget is €130, so please only apply if you can keep it tight and practical. Goal: - read one sensor input on ESP32 - send the value via MQTT to a local broker - add basic reconnect logic -…

Embedded CArduinoESP32MQTT
Payment not verifiedGermanyProposals: Less than 5
Posted 28 Sept 2026

Web app security review for login and API flows

Fixed price · €10,150Intermediate1 to 3 months

I need a focused security check for one small web app before I put it to more users. Main area is login, reset password, session handling and the API endpoints behind the app. Please look for common problems, give me clear findings with steps to reproduce,…

Penetration TestingOWASPBurp SuiteOAuth & OIDC
Payment not verifiedGermanyProposals: Less than 5
Posted 24 Sept 2026

Quick security review for my small web app

Hourly · €35–€50IntermediateLess than 1 month

I need someone to do a short security check on my small web app before I add more users. The app is built with a simple Node.js backend and a React frontend, with login through Keycloak. Please look for easy weak points, bad settings, and the most obvious…

Penetration TestingOWASPBurp SuiteKeycloakOAuth & OIDC
Payment not verifiedFranceProposals: Less than 5
Posted 24 Sept 2026

Add a simple iPhone feature to my existing app

Fixed price · €1,000IntermediateLess than 1 month

## Project I have a small iOS app already published and I need one extra feature added without changing the rest of the app. ## What I need - one new screen in SwiftUI - a simple form with validation - save the data locally - make sure the design looks clean…

SwiftSwiftUIApp Store Submission
Payment not verifiedSpainProposals: Less than 5