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Lukasz S.
$69/hr
100% Job Success
$30K+ earned
Offers consultations
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✅ Top Software design Please reach out to me if you looking for help with: - Data acquisition of IoT sensors and time-series data - AWS IoT Core / IoT platform architecture - Developing bespoke instrument control Graphical User Interface both as desktop or web apps - Storing and processing time-series data in binary files/No-SQL databases - Medical Device Software development Full time contracts and side projects welcomed. ⭐Key Services: ✔Embedded & Firmware Development and Cross-Platform Desktop Applications, ✔Data acquisition of IoT sensor and time-series data from USB or PCIe devices, ✔Developing bespoke instrument control Graphical User Interfaces, ✔Design and development of big-data processing and visualization pipelines, ✔ Storing and processing time-series data in binary files/No-SQL databases, ✔ Integration with LIMS/ELB systems or cloud data storage providers. ⭐Major technologies: ✔Advance computing: Python, C/C++, JavaScript, C#, MQTT, RFID, BLE, Raspberry Pi, Arduino ✔GUI development: Qt, VC++, PySide, Flask, Django ✔DevOps and system engineering: Linux (Ubuntu, Yocto and others), Windows, Docker ✔Cloud computing: AWS IoT Core, Azure, Egnyte, HDF5 data format ✔Software testing and best practices: CI, TDD, Jenkins, Git, Jira, Agile, ScrumMaster (CSM) 💡About WizzDev: WizzDev has extensive experience in the development of laboratory automation software and bespoke instrument control software ranging from Live Science to Automotive industries. We can provide you with ready turnkey solutions in each of those areas or we can work on a bespoke/customized solution just for you. We have a good track record working on projects in: bio-science, life-science, automotive and intelligent transportation systems. Our past success stories include companies like DNA Electronics, Oxford Nanopore Technologies, Mursla, Cetoni, Costain and Illumina. In addition WizzDev works with cloud storage vendors (AWS, Azure, Egnyte) and can provide help in storing and maintaining big data sets on the cloud.
WizzDev
Associated with
WizzDev
$600K+
earned
Gajender R.
$14/hr
100% Job Success
$100K+ earned
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Full time software developer specializing in web scraping, crawling. I have 12+ years of experience of software development. In past years I have worked on many web scarpers, websites. I have worked on various technologies like php,Python, perl, wordpress etc. For Scrapping data in perl I used WWW::Mechanize, WWW::Mechanize::PhantomJS,WWW::Mechanize::Firefox using moz-repl. I have used Python mainly to write website scrapers and data processing. I have used Scrapy and Beautiful Soup. I have used PHP to develop many websites. In PHP I have worked with MVC frameworks like Laravel, Laraship, Symphony, CodeIgnitor. I have good knowledge of working with Amazon s3 and Rackspace server api's I have worked with Facebook API's I also used redis cache. I have experience of working on GIT and SVN. Over the last 8 years worked with 250+ different individuals/startups/companies and helped them achieve their goals. Here is what you will get by working with me: * Working only on projects that I can deliver 100% * Ridiculous quality of work * Responsibility for tasks/project I work on * Reliability * Short response time keywords: python, php, java, selenium, requests, beautifulsoup, urllib2, web scraping,Mechanize, web crawling, automation, bots, scrapers, spiders
Roberto E.
$50/hr
100% Job Success
$900K+ earned
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I am a software designer and developer. I've been programming for 20 years. More than 10 years of working remotely I know several programming languages, DBs, CI/CD tools, etc. I am very experienced in API integration (Slack, Bitbucket, Jira, OpenAI, Jenkins, AWS, and more) Currently, I develop back end micro services in Python using FastAPI under Linux / Kubernetes.
Mohit K.
$25/hr
100% Job Success
$20K+ earned
Offers consultations
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I am a highly skilled iOS & Android App Developer with over 9 years of experience in building robust, scalable, and innovative mobile applications. Proficient in Swift, Kotlin, and Java, I specialize in delivering high-performance apps that align with business goals and user needs. What I Offer: ✅ AI-Powered App Development – Integrating machine learning & AI-driven features for smarter, more intuitive apps. ✅ Full-Cycle Mobile Development – From concept to deployment, I ensure seamless execution. ✅ Agile Development & Scrum Methodology – Transparent workflows, adaptive planning, and efficient delivery. ✅ Complex App Solutions – Expertise in multi-platform, API integrations, payment gateways, and real-time data processing. ✅ User-Centric Design – Focusing on performance, UI/UX, and smooth user experiences. I am passionate about leveraging the latest AI & mobile technologies to transform great ideas into high-quality digital products. If you're looking for a developer who can combine innovation, AI, and app expertise, let’s connect! 💡 Let’s build something amazing together! 🚀
App Ringer LLP
Associated with
App Ringer LLP
$60K+
earned
Muhammad Atif A.
$35/hr
100% Job Success
$100K+ earned
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Tech Consultant & Senior Python Developer for Backend Systems, Integration & Automation (Telecom/ORACLE-BRM Background) I'm a freelance software engineer with 18+ years of professional experience — including 7 years in the telecom sector, where I managed and customized Oracle BRM billing systems to align with complex business requirements. Over the past 9+ years, I’ve worked independently with global clients to build, integrate, and automate reliable software systems. I specialize in building custom backend tools, automated workflows, and system integrations that streamline operations, enhance reliability, and reduce manual overhead. ✅ What I Do Best: - Build and maintain backend systems & Web-applications using Python (Django, Web2py) - Integrate third-party services (Stripe, Slack, GoHighLevel, Google, Twilio etc.) - Automate recurring tasks and data pipelines (Bash, cron jobs, webhooks) - Design and optimize PostgreSQL and other relational databases - Develop dashboard-style tools and admin interfaces for operations teams 🧩 Past Highlights: - 7+ years working on Oracle BRM (Portal Infranet) in telecom environments (Pakistan, Malaysia, Indonesia) - Built HIPAA-compliant healthcare data platform features for a North American client - Led and mentored engineering teams, and managed production/staging infrastructure 🔧 Tech Stack: Python • Django • Web2py • PostgreSQL • MySQL • Bash • Linux • AWS • Git • JavaScript • jQuery • REST APIs I’m always looking for long-term collaborations where I can contribute to stable, scalable software systems. Let’s connect and discuss your goals.
Muhammad Atif A. has worked .
Zakaria E.
$18/hr
100% Job Success
$20K+ earned
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Hello! i am Zakaria, currently residing in France, I'm a highly skilled and experienced full stack developer with a strong background in Java Spring Boot and Angular. I've worked as a consultant for numerous companies, gaining valuable insights and experience. I have a proven track record of delivering high-quality, robust and scalable software solutions on time and within budget. I am highly adaptable and able to work on projects of any size, from small web applications to large enterprise systems. I am also a strong communicator and team player, able to work effectively with clients and team members to ensure project success. Let me bring my expertise to your next project and help you to achieve your goals !
$45/hr
100% Job Success
$400K+ earned
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I have been developing web applications and administering Unix/Linux systems (mainly LAMP/LAPP/Tomcat, Java) for years. I am a seasoned web developer who can conjure up powerful web apps. A good administrator who enjoys taming Linux/Unix systems. I use the following technologies : Java, Perl(mod_perl, CGI and FastCGI), PHP, Relational Databses(PostgreSQL, MySQL and Oracle), JavaScript, Ajax, Apache, Tomcat etc. I am a fan of Cloud Computing and I like building and maintaining Cloud infrastructure, mainly Amazon and Rackspace. Currently I have good knowledge in EC2,EBS,AMIs,S3,VPC etc and I am exploring more. My other expertise include : Automation using Perl/Bash, Bind(DNS), Mail Servers, WHM/cPanel, Hosting and Domain management etc.
$25/hr
100% Job Success
$8K+ earned
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I have 12+ years of experience in SQL Server 2008/2012/2016 for database handling, database maintenance, and report generation using SSIS and SSRS. I have also worked on Oracle Eloqua, HubSpot, Salesforce, Saleslogix, and Salesforce Marketing Cloud (SFMC) for marketing automation, CRM operations, campaign execution, and reporting. In addition, I have experience with Snowflake Cloud and D365 CRM cloud data migration, along with hands-on work in web scraping, data extraction, and tracking using Perl, Python, and JavaScript. Marketing Automation / Digital Marketing: 1. End-to-end email campaign execution and deployment 2. Landing page, form, and campaign asset creation 3. Lead nurturing and automated workflow support 4. Audience segmentation and personalized targeting 5. Campaign operations, testing, and scheduling 6. Quality assurance and troubleshooting support 7. Social media and integrated digital campaign assistance 8. Campaign reporting, tracking, and optimization support Data Cleansing/Data Entry: 1) Automated Data cleansing form Data entry tools and also done de-duped with Fuzzy string match. 2) Automated Data entry work via Excel, Python and Perl. Data Scraping Projects in Python/Perl: 1) Scarped and verified company information with site(:) concept using different search engines (Google,bing,etc) 2) Collected Management and Board Members details from different websites through keywords provided. 3) Extracted More than 200K data from multiple directories using Membership login and URL framing. 4) Extracted Job Listing information from different Job portals with Email scrapping. 5) Extracted Automobile parts information from different websites using part numbers. 6) Handled firewall protection and blocking issues using web proxies and Proxy IP rotation. 7) Scrapped Ajax websites with JSON File content 8) Windows job scheduled done to scrape data every day and stored into SQL tables. MS SQL Server 2008R2/2016 | SSIS | SSRS| D365 CRM | Snowflake Cloud: 1) Developed Data Warehouse for SSRS Reporting by integrating CRM data, ensuring efficient reporting capabilities. 2) Implemented Business Logic using stored procedures and functions to streamline operations and improve accuracy. 3) Optimized Queries and resolved performance issues in complex joins and queries to enhance data processing speed. 4) Revamped Legacy Procedures, simplifying them based on updated business logic to improve maintainability and performance. 5) Conducted SQL Code Reviews to ensure new business rules were integrated without disrupting existing logic. 6) Worked on Snowflake Cloud to integrate data from multiple sources (Oracle, MySQL, Postgres, Vertica) for a unified reporting platform. 7) Utilized SSIS Fuzzy Match and Token Algorithms for data clustering and de-duplication, ensuring data quality. 8) Migrated HubSpot Data to CRM via Python and SSIS, supporting the development of new marketing strategies. 9) Extracted Zoom Data (meeting ID, registrants/participants) using Python and SSIS, presenting key metrics in dashboards. 10) Developed Sales KPIs in SSRS to support sales and R&D teams in meeting targets. 11) Deployed SSIS and SQL Procedures via SQL Server Agent with XML configuration and Integration Service Catalog. 12) Implemented Exception Handling with automated email alerts to ensure issue detection and resolution. 13) Automated Monthly Report Creation in SSRS, providing management and business development teams with real-time sales insights. 14) Over the course of a few days, we dedicated our efforts to establishing a seamless connection to CRM Dynamics using an SSIS package. We explored the process of creating API credentials for connecting to Dynamics CRM through the KingswaySoft tool in SSIS. After extensive testing and validation, we successfully established the connection and began transferring data from CRM Dynamics to MS SQL Server. Additionally, we integrated the data into a new, centralized Dynamics database, ensuring that all entities from CRM Dynamics were accurately loaded. 15) Replicated Snowflake Data Across Regions and created stored procedures for task scheduling and business logic implementation.
Robert B.
$80/hr
100% Job Success
$100K+ earned
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Back-end programming * Expert-level Database Design and Implementation. * Extensive experience in back-end application development, accessing databases for both extraction and update. * Experienced in API development, both as client (e.g., importing data from external vendor API) and server (writing RESTful APIs). General programming * Highly experienced in maintenance of existing legacy code, as well as new development. * Excellent coding and bug-fixing skills in Python, Perl, C, PHP and Pick Basic. * Desktop applications using Python tkinter. * Many years experience in process automation. Databases: MySQL, PostgreSQL, SQLite, Oracle, SQL Server, Access Source control: Git, CVS, SVN, Perforce Specialty: Finding solutions to difficult problems.
Robert B. has worked .
$29/hr
100% Job Success
$100K+ earned
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Proud to say I'm one of the few almost extinct species that are normal, polite, reliable, easy to communicate with and deliver quality work. I've hired freelancers in the past and know how difficult it is to find a good person. Currently I'm focusing on developing AI-Powered solutions using Python. Below are details of my experience. Software Developer specializing in Web Data Extraction and Manipulation. Expert in web data retrieval (also referred to as web scraping, crawling or web-based data collection), data manipulation (using regular expression parsing) and storage (e.g. MySQL, Postgres). Extensive experience in processing of large data sets. For example, parsing out the complete list of medical professionals in USA, over 3 million records including nurses, physicians, chiropractors, dentists, hospitals, pharmacies, etc. Another example: collecting all the businesses in USA from Google using Google Places API and Google Nearby Search API as well as Yelp API. - Fluent in English, French, Polish, and Spanish. - Government of Canada Secret Security Clearance (avail. on request). - Very organized, innovative, and dedicated to work. - Excellent communication skills (both written and spoken). My objective is to deliver quality solutions and leave my clients satisfied. PS. Here's what ChatGPT thinks of me based on all of our interactions :-) "Based on our interactions, one thing that stands out is your attention to detail and determination to troubleshoot effectively. Whether you're navigating through system settings, managing code, or exploring new tools, you're methodical and thorough. You often explore multiple angles when tackling a problem, which shows resilience and problem-solving skills. You might already know this about yourself, but perhaps you don't fully realize how much your persistence and willingness to dive deep into technical challenges sets you apart. These traits are valuable not only in programming but in any complex, evolving task you face."