Freelance bug fix developer

Work with a freelance developer to fix bugs and resolve technical issues fast

Your website or app is experiencing bugs and errors that hurt user experience? On ComeUp, freelance developers diagnose and fix technical issues quickly and reliably. Expert support to get your digital product back on track.

Services Freelancers

423 results

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  • Bertrand Domat
    Bertrand Domat

    Expert PrestaShop & WordPress | Développeur Web Full-Stack

    Performance Top

    Sales 2,041

    Status PRO

    Debugging

    Web security

    Prestashop

    Php

    Extension development

    Web performance optimization

    Website migration

    Website maintenance

    WooCommerce

    WordPress

  • Théo
    Théo

    Développeur expert web et mobile | SEO | ULTRA-réactif |

    Performance Top

    Sales 665

    Status PRO

    WordPress

    Sales funnels

    Shopify

    Prestashop

  • Imaging
    Imaging

    Développeur web certifié Prestashop & WordPress : réparation, dépannage et création de site commerce

    Performance Top

    Sales 2,656

    Status PRO

    Full-stack

    Automated workflow

    Page speed optimization

    Web performance optimization

    Website maintenance

    WordPress

    WooCommerce

    Web security

    Prestashop

    Technical seo optimization

  • youssef
    youssef

    Développeur Web & E-commerce | WordPress, PrestaShop, Shopify, PHP, VPS, SEO, security, Optimization

    Performance Top

    Sales 2,244

    WordPress

    Prestashop

    Shopify

    Chatbot

    Api

    MySQL

    WooCommerce

    Server configuration

  • yoann
    yoann

    Spécialiste WordPress & SEO - Website Manager

    Sales 15

    Status PRO

    WordPress

    Prestashop

    HTML

    CSS

    Php

    Python

    JavaScript

    Web design

    Web scraping

  • Maurel
    Maurel

    Développeur Full-Stack | Laravel · Vue.js · Flutter · WordPress · Django · Angular

    Sales 97

    Status PRO

    WordPress

    WooCommerce

    Git versioning

    Angular

    Php

    Python

  • EcomDev
    EcomDev

    Développeur de Sites Web - Expert SEO | N°1 - Plus de 330 avis positifs ⭐️

    Performance Top

    Sales 389

    Status PRO

    Showcase website

    WordPress

    Organic seo

    E-commerce niche

    JavaScript

    Mobile application

  • Jules
    Jules

    Agence Expert WordPress | Création, Migration & Résolution de bugs

    Sales 11

  • Valere
    Valere

    🏅 Développeur web fullstack & no-code

    Performance Top

    Sales 194

    Website migration

    Website redesign

    Website maintenance

    Elementor

    Divi

    Showcase website

    WordPress

    WordPress theme

    Shopify

    WooCommerce

  • SLIMANE
    SLIMANE

    Je crée votre application Web & Mobile de A à Z | Livraison rapide • Code propre

    Sales 54

    Python

    JavaScript

    React

    HTML

    CSS

    SQL

    MySQL

  • CardinalWeb
    CardinalWeb

    Performance Top

    Sales 931

    Status PRO

  • Vidal Tresor
    Vidal Tresor

    Développeur Web - Consultant en Marketing Digital

    Performance Top

    Sales 387

    WordPress

    Email marketing

    Emailing automation

    Web design

    IT support

    Chatbot

    Zapier

    WooCommerce

    HTML

    CSS

  • DonatienPro
    DonatienPro

    Développeur WordPress & SEO

    Performance Top

    Sales 233

    Status PRO

    WordPress

    Shopify

    Php

    React

    WooCommerce

    Landing pages

  • Hassan
    Hassan

    Expert WordPress & SEO | Sites performants, visibles et conçus pour convertir

    Performance Top

    Sales 884

    Status PRO

    Online store creation

    Website redesign

    Seo-optimized content

    WordPress

    Showcase website

    Web performance optimization

    Php

    Shopify

    Prestashop

  • Mike Kukwikila
    Mike Kukwikila

    Consultant SEO-GEO, WordPress & IA | Acquisition Client

    Sales 28

    Status PRO

    Automated workflow

    Digital marketing

    WordPress

    Organic seo

    Google my business

    Google search console

    Advertising campaigns

  • Karam
    Karam

    Consultant Web - Expert WordPress & SEO

    Performance Top

    Sales 360

    Status PRO

    Showcase website

    Organic seo

    WordPress

    Web design

  • Adama Kone
    Adama Kone

    Intégrateur & Consultant Odoo | Automatisations | Sites web WordPress · Make · Zapier · n8n

    Performance Top

    Sales 290

    WordPress

    Wordpress plugin

    Angular

    JavaScript

  • Elijah
    Elijah

    Shopify Store Optimization & Compliance Specialist

    Performance Top

    Sales 5

    Wix

    WordPress

    WooCommerce

    Shopify

    Shopify theme

    Shopify plugin

    Wordpress plugin

    On-page seo

    Off-page seo

    Technical seo optimization

  • Sophie Boutemy
    Sophie Boutemy

    Développeuse web – WordPress & WooCommerce | Dépannage, maintenance et développement

    Performance Top

    Sales 5

    Status PRO

    HTML

    Php

    JavaScript

    WordPress

    Wordpress plugin

    WordPress theme

  • Chajia
    Chajia

    Création de Sites WordPress | E-commerce & Vitrine | 🔧 Maintenance & Optimisation SEO

    Performance Top

    Sales 414

    Status PRO

    WordPress

    HTML

    Php

    MySQL

    Adobe Illustrator

  • KOKOU
    KOKOU

    Concepteur de sites WordPress axés sur la conversion | + de 200 clients pleinement satisfaits

    Performance Top

    Sales 286

    HTML

    WordPress

    CSS

    WooCommerce

  • RYAD
    RYAD

    ECOM MARKETING

    Sales 110

    Status PRO

  • Michael Galy
    Michael Galy

    Performance Top

    Sales 463

    Web security

  • Said
    Said

    Sales 611

    Laravel

    Back-end

    WordPress

    WooCommerce

    Python

    Prestashop

    Php

    HTML

    WooCommerce plugin

    CSS

  • GBESSIEDE
    GBESSIEDE

    🚀 Consultant SEO & GEO & Google Ads – Faites décoller votre business en ligne

    Performance Very good

    Sales 113

    On-page seo

    Off-page seo

    Google Ads

    Seo writing

  • Gratien Dohou
    Gratien Dohou

    WordPress, SEO & Google Ads | Expert en création de sites et acquisition de clients

    Performance Top

    Sales 121

    Status PRO

    WordPress

    SEO

    Google Ads

  • Lefreelancer
    Lefreelancer

    Expert en Digital, E-commerce, Drosphipping & IA — CMS/Automatisation

    Performance Top

    Sales 2,664

    Status PRO

    Facebook pages

    Prestashop

    WordPress

    Wordpress plugin

    WordPress theme

    Shopify

    Adobe Photoshop

    Adobe Illustrator

    WooCommerce

  • Lucyna
    Lucyna

    Site professionnel pour attirer les clients !

    Sales 2,393

    Status PRO

    WordPress

    HTML

    CSS

    Php

    Blog creation

    WooCommerce

  • Mourad
    Mourad

    Développeur WordPress & Elementor | Création de sites internet WP sur mesure.

    Sales 96

    Status PRO

    WordPress

    WooCommerce

    Wordpress plugin

  • Jérémie
    Jérémie

    Jeremie

    Sales 3

    Unit testing

  • Sitraka Nehemia Léon
    Sitraka Nehemia Léon

    Développeur Full Stack

    Sales 12

    WordPress

    React

    Node.js

    Php

    Tailwind

    Bootstrap

  • Aurélien
    Aurélien

    Performance Top

    Sales 205

    Status PRO

  • Nicolas
    Nicolas

    Responsable E-commerce & Digital Indépendant — Consultant en transformation digitale des PME

    Sales 334

    WordPress

    Logo Modification

    Logo Creation

    IT support

  • Jean Chrysostome
    Jean Chrysostome

    Expert WordPress & SEO | Solutions web modernes et sur mesure

    Performance Top

    Sales 6

    Web performance optimization

    Website maintenance

    WooCommerce

    SEO

    WordPress

    CSS

    JavaScript

    Php

    WordPress theme

    Wordpress plugin

  • Najwa
    Najwa

    🚀 Ingénieure en Informatique | Experte en Shopify et E-commerce 💻

    Performance Top

    Sales 769

    Shopify coaching

    E-commerce coaching

    E-commerce niche

    Shopify theme

    Shopify plugin

    Shopify

    WooCommerce

    WordPress

  • Didier Mollet
    Didier Mollet

    Sales 1,521

    Status PRO

    Adobe Illustrator

    Adobe Photoshop

    Adobe InDesign

  • Martin_JS
    Martin_JS

    Ingénieur logiciel - Développeur Web, Mobile & intégration IA : Application, SaaS, Plateforme, Sites

    Performance Very good

    Sales 572

    Status PRO

    Web application

    Mobile application

    UX/UI

    AI

    Website redesign

    WooCommerce

    Shopify

    SEO

    WordPress

  • PIERROT
    PIERROT

    Expert WordPress | Création de sites internet | Support & Maintenance WordPress

    Performance Very good

    Sales 281

    Web security

    WordPress

  • Fuznet
    Fuznet

    Shopify Expert

    Performance Good

    Sales 6,154

    Status PRO

    Shopify

    HTML

    CSS

    JavaScript

  • mohamed el hadi
    mohamed el hadi

    🔥 Développeur Web Senior full-stack

    Sales 118

    Php

    JavaScript

    React

    WordPress

    Wordpress plugin

    WooCommerce

    Api

  • Mohammed Achraf Benali
    Mohammed Achraf Benali

    Développeur informatique et infographiste

    Performance Top

    Sales 97

    Status PRO

    CSS

    WordPress

    WooCommerce

    HTML

    JavaScript

    Php

    Adobe Photoshop

    Adobe Illustrator

    Adobe after effects

    Adobe After Effects

  • Yaovi
    Yaovi

    Expert WordPress & Prestashop

    Performance Top

    Sales 14

    Website migration

    Website redesign

    Website maintenance

    WordPress

    Prestashop

  • Cyril
    Cyril

    Agence web professionnelle | Création de sites, apps mobiles & SEO

    Performance Top

    Sales 7

    Status PRO

    Organic seo

    WordPress

    Shopify

    WooCommerce

    Web design

  • Ghislain Kambale Mitahi
    Ghislain Kambale Mitahi

    Expert WordPress & Shopify | Dév Fullstack React, Next.js, Node.js, Python

    Performance Top

    Sales 43

    WordPress

    WooCommerce

    HTML

    JavaScript

    Php

    SQL

    Bootstrap

    CSS

    Docker

    Node.js

  • Leon Semado
    Leon Semado

    Développeur WordPress | Création de sites modernes, structurés et optimisés conversion & SEO

    Performance Top

    Sales 21

    Status PRO

    Website migration

    E-learning platform

    Online store creation

    Showcase website

    Elementor

    Website redesign

    SEO

    Page speed optimization

    WordPress

    WooCommerce

  • Rachid
    Rachid

    Développeur Full Stack & IA | API, SaaS, MCP et automatisation

    Sales 10

    Status PRO

  • Eddy
    Eddy

    Développeur Expert : Je crée vos Plateformes Web Haute Performance & Tunnels de Vente

    Sales 3

    Website maintenance

    SEO

    Restful api

    Website migration

    Online store creation

    Showcase website

    Debugging

    Website redesign

    Technical seo optimization

    Responsive design

  • Nicolas Pivaut
    Nicolas Pivaut

    Agence web à Lille

    Sales 1

    Status PRO

    WordPress

    Server configuration

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