Hire the Best SQLite Programmers

Oracle Certified Database Engineer | 15+ Years | Multi-DB, Odoo ,Legacy Oracle Specialist and data migration. "I build the intelligence inside your data systems." 15+ years delivering scalable solutions across Oracle (certified), PostgreSQL, MySQL, SQL Server, MS Access, and more. Trusted by long-term clients for reliable, high-quality work. Expertise: • PL/SQL, tuning, optimization, migrations (Oracle + multi-DB) • ETL/ELT pipelines, Python automation • Odoo customization, modules, APIs • Biometric sync (ZKTeco/BioTime → Odoo HR/Payroll) • Oracle Forms & Reports development/maintenance; PHPRunner rapid web apps; desktop DB (MS Access, LibreOffice Base) • Legacy Oracle: Install & configure Forms 6i on Windows 11 (unsupported workaround) Results: Zero-touch payroll for 500+ users; 70%+ faster queries. Available for long-term partnerships. Message me to discuss your project!

With over ten years of comprehensive experience as Database Developer, Data Architect, Data Modeler, ETL, And Data Warehouse, My expertise lies in building high performance database systems , designing logical and physical data models, and crafting scalable data structures that meet complex business requirements. I specialize in database development, data modeling, ETL processes, and data warehouse design. I have experience in Oracle, SQL Server , PostgreSQL, and MySQL I focus on delivering high performance, reliable, and scalable data systems that enable analytics and support business decision making. Strong expertise in SQL, performance tuning, and managing large scale system

I'm very friendly, easy to talk to, and easy to work with. Whether you are technical or not, I talk in plain English with no jargon so that you know exactly what's going on and how things work. I don't just work FOR you, but WITH you. I can tackle any Ruby tasks that you need. I can write anything from small Ruby scripts to full-blown Web applications. My code is clean, readable, and regularly refactored. TESTING IS A HIGH PRIORITY IN MY WORK, NOT AN AFTERTHOUGHT. I WILL WORK FOR A LOWER RATE FOR GOOD CAUSES. Efficient and Easy for You For web applications, I use Heroku, a service that allows me to quickly give you a product in a working state so you can immediately interact with it. No work needed on your end. I just give you a web address, and you see results in seconds. Knowledgeable I regularly follow Ruby news and attend conferences, so you can be confident that I am keeping up with technology. Flexibility I can work any day of the week at any reasonable hour of the day. I've had clients across the globe and have had no problems making myself available at a time that is convenient for them. I respond to emails quickly and give plenty of warning if I will not be available. "Why should I hire you when I can hire multiple developers for the same price?" Developers that are cheaper are often less experienced and less skilled. They might spend hours on the wrong solution to a problem. That means they could spend more time trying to make it work and more time trying to fix it. But a good developer will make better decisions, produce higher quality code, and can get the job done better and faster. With a good developer, you may very well spend less time and money and get a better product. Why Testing Matters There is no such thing as bug-free code. If you were an online bank, how confident are you that every transaction is working like it is designed to? Can you afford to have a bug? With automated tests, you have code that verifies your application is working as expected. Most good programmers nowadays are thoroughly testing their code. It helps with development, and it helps when things go wrong like many things eventually do. Tests will also help you make sure that fixing a bug here won't cause another bug way over there. Not having automated tests makes development SEVERAL TIMES slower, costing more money and more headache. Frameworks, gems, tools, etc. that I use: Ruby on Rails Sinatra HAML/SASS JavaScript CoffeeScript jQuery Minitest RSpec Jasmine Capybara Nokogiri Faraday Sidekiq Pro Bundler RVM ch-ruby homebrew PostgreSQL ActiveRecord Heroku SOA

I’m a highly experienced Java Full Stack Developer with 12+ years in building secure, scalable web and enterprise applications. My expertise spans Java (7–21), Spring Boot, Hibernate, Angular, React, Next.js, REST/GraphQL APIs, and cloud services (AWS EC2, Lambda, RDS, S3, EKS). I’ve delivered solutions across industries like HRMS, eCommerce, Travel, Real Estate, and SaaS, and handled complex integrations with ERPs (NetSuite, SAP), GDS (Amadeus, Sabre), and payment/email/SMS gateways. Whether you need backend architecture, frontend development, API integration, cloud deployment, or end-to-end solutions—I'm ready to deliver clean, reliable, and business-driven code. 📩 Let’s collaborate and bring your vision to life! Languages, Tools and Technologies i've worked since last 12 years. Languages: Java (8–17), JavaScript, TypeScript, HTML5, CSS3, SCSS, SQL, NoSQL, GraphQL, Bash, Shell scripting, XML, JSON, YAML, WSDL, XSD Web Development ------------------- 1. CSS Frameworks: Bootstap, Tailwind. 2. Frontend Frameowrks: Angular (1.x - 17), ReactJS, React, NextJs, RxJs, NgRX, Redux, ExtJs. 3. Frontend UI Component Frameworks: PrimeNG, KendoUI, Quasar. 4. Mobile Frameworks: React Native, Java(MVVM). 5. Desktop Application Frameworks Java Swing, JavaFX 6. Backend technology & Frameowrks: JAVAEE, Struts, Spring, Springboot, Spring Security, Spring MVC, Spring Cloud, NodeJs. 7. Backend Caching Stores: Redis, Memcached 8. Search Framework: Elasticsearch, Apache Solr 9. Queue and Messaging Frameworks ActiveMQ, Kafka, SNS-SQS 10. API Standards and Protocols: Swagger/OpenAPI, GraphQL (basic), WebSocket/STOMP, SOAP, REST, MQTT, COM. 11. ORM Frameworks: JPA, Hibernate, Mybatis. 12. CMS Frameworks: Strapi, Payload. 13. Backend Templating Engines: JSP, JSTL, Thymeleaf, Freemarker, Primefaces. 14. Reporting Tools: Japser Report, Itext, Flying Saucer. 15. Gateway Framework: Zuul, Openresty, AWS API Gateway. 16. Web Servers: Tomcat, NginX, Jboss, Wildfly, Apache Karaf, Apache Httpd, Express. 17. Databases: PostgreSQL, MySQL, MongoDB, Neo4j, Sqlite. 18. Databbase Migration Frameworks: Flyway, Liquibase 19. Build Tools: Git, Gitlab, Bitbucket, Maven, Gradle, Docker, Docker Compose. 20. CI/CD Tools: Jenkins, Gitlab CI, Bamboo. 21. Artifecttory Framework: Nexus, Jfrog Artifactory 22. Container Orcastration tools & Frameworks: AWS EKS & ECS, Kubernetes. 23. Infrastructure Monitoring Tools & Frameworks: Prometheus, Grafana, Loki, Tempo, ELK (Elasticsearch, logstash, kibana) 24. Infrastructure provisioning Frameworks: Terraform 25. Cloud Providers: AWS, GCP, AZURE, HETZNER 26. Testing Frameworks Junit, Selenium, EasyMock, Mockito, HtmlUnitDriver 27. Web Scraping Framework Selenium Headless, HTMLUnitDriver, PhantomJs, Jsoup, Jmeter. 28. Profiling Tools VisualVM, Jprofiler, Yourkit. 29. Security Types & Tools: Password, Basic, Token, OAuth 2.0, SAML(SSO), LDAP, 2FA, Okta One Login, KeyClock 30, Compliances Awareness: GDPR, SOC2, POPIA, PCI-DSS ---------------- 1. Project Tracking Tools: JIRA, Trello, Clickup, Asana, Aiwi Team. 2. IDEs IntelliJ, Eclipse, Netbeans, VisualStudio 3. Cloud Services: AWS EC2, Beanstalk, Lmbda, Cognito, Batch, SNS, SQS, API Gateway, Load Balancer, Code Pipeline, Cloud front, ECR, ECS, EKS, DynamoDB, RDS, CloudWatch, S3. 4. ERPs & Integrations Netsuite, Broadleaf Commerce, Xero, Quickbook, SAP, GDS Systems like (Amadeus, Sabre, Galileo), AeroCRS, Radixx, American Express Virtual Card, Nightsbridge Hotel Supplier, EzShuttle, First Car, AVIS, Europcar, RouteSavvy Route Optimization, Google Maps. 5. SMS & Email Providers Twilio, Clikatell, Sendgrid, ZeptoMail, AWS SES, Custom Sendmail, Dovekot

You need a mobile app that scales, performs like a native application, and doesn't break when user traffic spikes. That is exactly what I engineer. With 6+ years of specialized experience in cross platform development and over 110 live apps shipped to the App Store and Google Play, I build production ready mobile ecosystems using Flutter and Dart. As a Top Rated developer with a 100% Job Success Score, my focus is strictly on clean architecture, real time backend synchronization, and seamless API integrations. I don't just build frontend screens; I architect complete, maintainable mobile infrastructure. My Core Engineering Focus: 1- AI & LLM Integration: Embedding OpenAI (GPT 4), Gemini, and custom machine learning models directly into Flutter apps for intelligent automation and real time processing. 2- Complex Architecture: State management Provider, Riverpod, BLoC, background services, secure local storage, and custom native bridging MethodChannels for device specific hardware like Bluetooth and GPS. 3- Robust Backends: Deep expertise in Firebase, Firestore, Auth, Cloud Functions and Node.js REST APIs to ensure your app’s data layer is secure and lightning-fast. What I Build: 1- Healthcare & Wellness platforms wearable integration, live health metrics, secure auth. 2- FinTech & E commerce apps Stripe, RevenueCat, multi vendor payment routing. 3- Social & Real time Utility systems live GPS tracking, complex admin dashboards, multi user messaging. My Tech Stack: Flutter | Dart | Firebase | Node.js | RESTful APIs | OpenAI API | Mapbox/Google Maps | Stripe | RevenueCat | SQLite / PostgreSQL If you need a senior developer to take your app from a technical spec to a fully deployed, high performance product, let’s talk. Send me a message and let's map out the architecture for your mobile build.

My name is Martin Gruszka, I am an experienced, solution oriented, systems programmer. I code VB, VBA, T-SQL, C#, and ASP Dot Net. I have deep familiarity with Microsoft Access in the Enterprise and Microsoft SharePoint as a Document Management and Automation platform. I design and integrate database systems, deploy data transformation solutions, migrate companies to new platforms, design new processes, project manage vendors and initiatives. I have developed a keen sense and understanding of the underlying Business Practices that these technologies tend to support. Particularly solutions impacting the non-profit world but also membership management, sales, and accounting. Working with me you'll find articulate, highly technical yet business oriented, professional, always seeking a win win, and able to present technical concepts to business audiences and vice versa. Let's connect! I program primarily in - T-SQL - ASP Dot Net - C# - Python - VBA - Visual Basic - JavaScript I have direct experience implementing on top of the following platforms: - MS Access - MS SharePoint - Dynamics CRM, AX, SL - DotNetNuke - MemberTrack - MS SQL Server - SQL Server Integration Services (SSIS) - SQL Server Reporting Services (SSRS) - Azure SQL Server