Upstaff Developer Profile Directory

I help enterprise teams automate and simplify Oracle data workflows, integrations, and large-scale backend systems. Experienced across healthcare, telecom, logistics, retail, manufacturing, consulting and public sector, I solve database reliability and performance problems for mission-critical applications. Available for remote freelance/contract projects, specializing in PL/SQL, Python, Oracle EBS R12, ETL pipeline automation, and cross-time zone support.

* Software engineer with 6+ years in mobile Android (Kotlin, MVVM and Clean Architecture). * Master's degree in Computer Engineering * Experience with Android SDK, Jetpack components (Room, Dagger/Koin Compose), Android Views, and integrating with RESTful APIs and various hardware (e.g., portable printers, scanners, Bluetooth devices). and REST API integration, Git/GitFlow, and API integrations. * 4 years with ERP systems (internal use: employees, warehouse, workers "in fields") for mobile devices and hardware (e.g., portable printers, scanners, Bluetooth devices). * Led a team of Android developers, mentoring junior engineers, conducting code reviews, and coordinating with cross-functional teams to ensure the timely delivery of high-quality products. * Passionate about delivering user-friendly solutions that solve real-world problems.

At DBB Software, we deliver custom software products tailored to your needs, leveraging our set of pre-built solutions that reduce your development time by up to 50%. As a certified AWS Partner, we excel in migrating any system or workload to the cloud, ensuring your setup is up to industry standards and primed for success.Our services: Web Development Mobile Development DevOps Engineering AI/ML Development Software Integration (CMS/CRM/ERP) AWS integration Dedicated Team Team Extension IT Support & OperationsIndustries: E-commerce Real Estate Social Network HR platforms Logistics HealthCareOur Approach: We use pre-built solutions with ready-made blocks to speed up development, leading to: 50% reduction in development time. Up to 30% faster POC and prototype stages. 50% less planning time.Why DBBS? 10+ years of industry experience 100+ skilled software engineers 5+ years is the average employee tenure. 6+ years of client lifetime We’ve successfully completed over 100 projects for industry leaders such as JLL, WeWork, RedAlpine, Philips, DispatchHealth, and Doctify, helping secure substantial funding for our clients, including $50M for a healthcare startup, $11M for a marketplace, and $5M for a real estate platform.

I am a seasoned blockchain developer with proven experience in building, optimizing, and scaling projects across multiple layers and ecosystems. Beyond development, I also bring strategic connections and marketing expertise to help projects succeed from launch to adoption.

- Over 12 years in the tech industry, my mission is to innovate with cutting-edge technologies, fostering a team-driven environment where diverse perspectives thrive - 6 years of experience with Flutter; - Committed to developing robust products that seamlessly integrate mobile and cloud technologies, aligning with our organization's culture of continuous learning and improvement. - My expertise in mobile development and enterprise systems, underpinned by a solid understanding of business ownership, empowers us to create solutions that resonate with our users' needs. -Over the past 6 months, my role team-lead and Head of R&D has centered on assembling and leading a dynamic team adept in technologies such as Flutter, Golang, Java, Angular, and React. - Dedicated to leveraging cloud services like AWS and Google Cloud Platform, ensuring our products are scalable and reliable.

Developing and optimizing model-based and data-driven algorithms for UAV trajectory planning, control, and autonomous decision-making. Combining AI, optimization, and simulation to enable intelligent flight systems.

Seasoned Android Developer and emerging iOS Developer with over 6 years of specialized experience in Android and over 1 year in iOS platform development. Expert in AR/3D reconstruction, excelling in Jetpack Compose, ARCore, and Open3D technologies, distinguished for advancing mobile systems and enhancing app performance. Proven track record in delivering cross-platform solutions, effectively managing app lifecycles, and leading development of AR-based applications. Recognized with an award for quality delivery and holds a Master's degree in Computer Applications, underpinning a strong technical foundation in mobile app development. Certified in Professional Scrum Master I, reflecting a deep understanding of Agile methodologies and software development best practices.

A well-rounded software engineer with a National Diploma in IT and diverse experience across several tech domains. Engineer possesses expertise in a range of programming languages like Dart (Flutter), Java, C#, and PL/SQL, and is also proficient in data automation tools including Power BI, Tableau, and VBA. They have a proven track record in database administration, test automation, and system integration, demonstrated by their work with enterprise clients and contributions to national innovation projects. Notably, the engineer has developed AI-powered platforms and fintech solutions, showing a commitment to innovation and problem-solving. Their methodologies include Agile and SDLC, ensuring efficient and effective project execution. With certifications in modern frameworks and technologies like Hashgraph and BDD testing, the engineer's technical acumen is well-established.

Android developer with a strong foundation in software engineering, holding a Bachelor's Degree in IT and Software Engineering, and boasting over 4 years of professional experience. Expertise in Java SE, Kotlin, and Android SDK underscored by proficiency in MVVM, MVP, and Clean Architecture, ensuring scalable and maintainable code. Adept in modern Android development tools like Jetpack Compose and Navigation Component, coupled with mastery in Networking & APIs like Retrofit 2 and Stripe API. Demonstrated abilities in asynchronous programming using Kotlinx Coroutines, and commitment to quality through rigorous test case development. Proven track record in contributing to all phases of the SDLC in various projects, from user interface implementation to application deployment for mobile and Android TV platforms.

Software engineer with hands-on experience in Android development, boasting a solid engineering foundation with a Bachelor's degree in Business Informatics. Demonstrates proficiency in multiple architectures, including MVVM and MVP, and technical fluency in Kotlin, Java, and Android Studio. Known for contributing to complex projects using tools like Dagger2, RxJava, and Realm, and adept at optimizing app performance and integrating third-party libraries. Played a key role in the development of applications in sectors such as e-commerce, delivery, and CRM, leveraging sound knowledge in material design guidelines and handling API interactions. Emphasizes a thorough understanding of project management and SDLC, with a strong ability to lead and collaborate within cross-functional teams.

Results-driven Senior Java Backend Developer with 11+ years of experience specialising in Java-based API integration and microservices architecture. Worked in international teams of 2–25 members, both on-site and remotely, with 3 years of proven team leadership. • Expertise: Kubernetes (AKS, AWS, GCP , OpenShift), cloud computing, enterprise integration platforms (EIP), and workflow automation. • Leadership: Successfully led teams, mentored developers, and drove the adoption of best practices in software design, CI/CD, and Agile methodologies (Scrum, Kanban).

Software Engineer with a strong background in full-stack development, having worked with a variety of technologies including ReactJs, NextJs, NestJs, NodeJs, and Go. Exhibits proficiency in both front and backend development, with experience using databases like PostgreSQL and MongoDB. Utilizes Microservices Architecture with Kafka and demonstrates a keen understanding of event-driven patterns for scalable and efficient applications. Proven track record in delivering optimized web solutions, achieving notable performance improvements and containerizing applications with Docker for streamlined deployment. Strong proponent of clean code and best practices in security, particularly in the development of a secure password manager with end-to-end encryption. Evidences a Bachelor’s degree in Management Information Systems (MIS) from Lebanese University, underlying a solid foundation in computer science.

Software Engineer with 6+ years of experience specializing in Shopify App Development, proficient in Liquid, Node.js, React.js, and GraphQL. Achievements include developing a highly rated Shopify app and improving store performance metrics. Advanced education with a BSc in IT from CityU. Proven track record in theme customization, app release cycle optimization, and e-commerce optimization, leading to increased sales for clients. Expertise in RESTful APIs, Agile development, and cross-functional collaboration to drive e-commerce growth.

Software engineer with hands-on experience in multiple languages including Python, JavaScript, Java, and proficiency in web development. Deep knowledge of frameworks such as Django, Flask, and frontend technologies like React, Vue.js, and CSS. Notable achievements include developing a highly downloaded plugin for Open Broadcaster Software and an innovative online music platform. Holds a bachelor’s degree in Computer Science from National Open University of Nigeria and a National Diploma in Computer Science and has practical experience with deploying applications on AWS and Heroku. The engineer effectively utilizes version control with Git and engages in agile practices with tools like Jira and Trello. Specializes in API development, cybersecurity, and responsive frontend implementation, and is known for efficiency in remote work environments.

- Full-Stack Engineer with a strong background in software engineering - 8+ years with React, Vue, and Angular - Backend systems with NodeJS, PHP, Laravel, and various database technologies such as MySQL, PostgreSQL, and MongoDB. - Holds a Specialist degree in Software Engineering

Distinguished Software Engineer with over 6 years in technology, specializing in Citrix XenApp, VMware, AWS, and Blockchain. Expert in ITSM, AI, Citrix administration, and infrastructure optimization, achieving 99.9% system uptime and a 20% reduction in operational costs. Proficient in cross-functional team leadership, automation scripting, and managing high-availability solutions. Holds a Bachelor's in Computer Science and actively engages in Blockchain and Web 3.0 development, signifying a robust mix of experience and continuous learning.

Data Scientist/Machine Learning Engineer with over 5.5 years of experience specializing in predictive modeling, analytics, computer vision, and offering a robust background in computer science and software engineering. Technical proficiency in Python and a range of data science tools including Numpy, Pandas, and Machine Learning libraries such as Scikit-learn. Expert in deploying ML models to cloud environments like Azure and AWS. Experience includes implementing custom ML solutions for fraud detection in banking, credit risk analysis in finance, energy consumption forecasting, and telecom subscriber insights. Strong track record in data engineering with Apache Airflow and Spark, and backend development with FastAPI. Practical DevOps and MLOps integration expertise using Docker, Jenkins, and MLflow, and experience with databases like PostgreSQL and Redis. Recognized for enhancing model performance through feature engineering, optimizing hyperparameters, and ensuring model explainability.

- Highly skilled and experienced Software Engineer with a strong background in computer science and automated control systems. - Proficient in a wide range of programming languages and technologies, including Java, Python, Ruby, and Node JS. - Extensive experience in designing and implementing software architectures, with a focus on cloud solutions and DevOps practices. - Strong knowledge of methodologies and frameworks such as TOGAF, Agile, and SCRUM. - Experienced in working with cloud platforms such as Amazon Web Services (AWS), Microsoft Azure, and Google Compute Platform. - Skilled in data analysis, data modeling, and data integration, with expertise in Big Data and IoT solutions. - Demonstrated ability to lead and manage teams, conduct architecture assessments, and provide improvement recommendations.

Data scientist with over 4 years of experience in implementing scalable ML solutions in finance and tech sectors, with a focus on credit risk and behavior prediction models. Expert in Python, PyTorch, SQL, and leveraging cloud technologies (AWS, GCP). Demonstrable achievements in enhancing churn prediction accuracy and user retention rates through advanced analytics. Proficient in setting up continuous integration and deployment pipelines using Docker, Airflow, and GitLab. Holds a Masters in Data Science and IBM Data Scientist certifications, with a strong foundation in computer science from the University of Lagos. The engineer's technical prowess, coupled with their methodical approach to A/B testing, ML pipeline development, NLP, and recommendation systems, makes them a strong candidate for sophisticated data science roles.

Dynamic Senior Blockchain Developer with over 8 years of experience in building and deploying enterprise-grade blockchain applications. Proficient in Solidity and Rust, expertly crafted DeFi protocols managing $75M+ TVL and facilitated $100M+ in cross-chain volume. Proven leadership in guiding engineering teams to deliver high-performance technologies such as a network bridge for Solana-Ethereum interoperability and Cosmos SDK chains. Innovated within the blockchain space by implementing TSS/MPC for secure transactions, designing advanced Layer 2 scaling solutions, developing DEX platforms, and ensuring system robustness through comprehensive DevOps practices. Educated in Computer Science from Sonoma State University, this engineer brings a wealth of knowledge in blockchain frameworks and protocols, programming languages including Solidity, Rust, and Go, as well as cloud infrastructures like AWS/GCP, underpinned by a command of software development methodologies.

Software Analyst Tester with over 3 years in the financial services industry, proficient in end-to-end, functional, regression, and automation testing. Expert in Selenium, TestNG, Jira, and Agile methodologies, demonstrating significant improvements in software quality and QA efficiency. Record of managing 100+ defects and reducing UI errors by 10% through mobile testing innovations. Agile contributor with solid Java skills, instrumental in automating key testing workflows and enhancing testing coverage. Holds a Bachelor's in Computer Science, backed by a suite of certifications in JIRA, Postman API, and Selenium Automation. Recognized for autonomous project leadership and a substantial 30% improvement in QA processes via BDD implementation with Cucumber.

- 4+ years with JavaScript, Node.js, React - Proficiency in integrating third-party services and APIs, creating highly dynamic user interfaces and service architectures. - Bachelor's degree in Software Engineering

I am a passionate Embedded Engineer with a strong interest in both embedded hardware and software development. My experience spans across the automotive domain, particularly focusing on steering wheel switch systems. I specialize in embedded C programming, low-level debugging, and hardware bring-up and testing.I have hands-on experience working with automotive communication protocols such as LIN and CAN, contributing to both development and integration phases of embedded projects. I have taken up dual roles as a developer and integrator, ensuring seamless collaboration between hardware and software components.Proficient in using version control systems like Git and Gerrit for code management and review processes. I also have working experience with automation frameworks, especially Python-based tools, including Robot Framework for test automation and in-house tool development.My technical toolkit includes industry-standard debugging and development environments such as:IAR Embedded Workbench iSYSTEM Debugger Oscilloscopes, logic analyzers, and CAN analysersWith a strong foundation in both software and hardware, I bring a systems-level understanding to embedded product development, always aiming for efficiency, reliability, and maintainability.

Software engineer with proven expertise in designing robust machine learning and data pipeline components. Key experiences include leading the integration of an agentic AI decisioning solution at Braze and crafting data strategies at WE Foundation. Technically proficient in Python, SQL, Spark, and GCP, with strong foundations in software engineering principles for scalability and maintainability. Demonstrated leadership in advancing team culture, significantly reducing model downtimes at SOK. Credited with innovating AI-driven scheduling solutions at Quinyx, contributing over €350K in annual recurring revenue. Currently finalizing a Master's degree in Business Analytics with hands-on application of Business Intelligence, analytics, and data modeling, poised to deliver high-impact results in technology-driven roles.

- Full Stack Developer with 1+ years of experience in designing scalable, production-grade web applications using the MERN stack and AWS cloud services. - Proficiency in React.js, Node.js, MongoDB, AWS Lambda, Cognito, API Gateway, and S3. Expert in serverless architecture, RESTful APIs, database design, authentication systems, and performance optimization. - Developed several full-stack applications, including a CV generation platform with optimized PDF exports and serverless APIs handling over 10,000+ requests daily. - Holds a Bachelor's degree in Computer Engineering, complementing his practical coding skills with a strong foundation in computer science principles. - Agile and DevOps advocate with experience in using tools like Git, GitHub, and AWS Suite for iteration, version control, and infrastructure as code. - Dedicated to best practices in software development, including secure coding, performance measurements, structured logging, and clean architecture implementation.

With over a decade of specialized experience in frontend development and accessibility engineering, this candidate stands out for their expertise in creating inclusive digital environments compliant with WCAG standards. Their deep understanding of user-centric design is reflected in their proficiency with HTML, CSS, TypeScript, and modern frameworks such as Angular and React. They have a proven track record in performing detailed accessibility audits, leveraging assistive technologies and testing tools to enhance project compliance with European and international laws. The candidate's front-end development experience is complemented with practical proficiency in using ARIA patterns, semantic HTML, and establishing keyboard navigation practices. Their portfolio includes close collaboration with cross-functional teams to successfully implement fixes and features that significantly improve user accessibility, ensuring rigorous adherence to accessibility audits and VPAT documentation.

Accomplished software engineer with 15+ years of experience in driving technology solutions across various industries. Expert in B2B/B2C sales strategy with a focus on IT and technology-based applications. Noteworthy for implementing go-to-market strategies and digital marketing campaigns that enhance brand visibility and product reach. Strategic thinker with an MBA in Business Development Management and a strong record in leveraging data insights for business growth. Credits include a marked 25% increase in sales revenue via strategic partnerships and a 40% boost in the sales pipeline with a leading edge in CRM optimization and customer relationship management. Proficient in spearheading team performance and executing market research to elevate competitive standings through innovative product offerings.

With over 9 years of experience, the engineer has established a strong reputation in full stack development, exhibiting prowess in Python, Django, React JS, and front-end JavaScript technologies. They have a proven track record in leading and developing scalable web applications, showcasing competencies in database schema design, backend logic, API creation, and performance optimization. Their educational foundation in Computer Sciences is complemented by their ability to work in team environments, driving projects to successful completion and mentoring junior developers. The engineer possesses practical knowledge of cloud services, version control, data scrapping tools, CI/CD pipelines, and has actively contributed to various projects, demonstrating technical agility across domains such as e-commerce, HR management, sentiment analysis, and more.

Highly skilled MLOps Engineer with extensive experience in building, deploying, and scaling machine learning models in production environments. Proficient with a range of cloud platforms (AWS, Azure, GCP) and containerization tools (Docker, Kubernetes), adept at implementing CI/CD pipelines (Jenkins, GitHub Actions) for reduced deployment time by 40%, and well-versed in MLOps/DevOps integration for efficient ML model lifecycle management. Holds a strong foundation in computer science with an M.Sc. degree and multiple certifications including AWS Machine Learning Specialty. Proven track record with project achievements like developing an ETL pipeline for real-time analytics and achieving a 20% reduction in transaction fraud through a real-time fraud detection system.

Software engineer with over 20 years of professional experience, adept in backend development, database programming, and application deployment. Graduated with a Bachelor's Degree in Computer Science from the University of Illinois at Chicago, demonstrating a robust educational foundation in the field. Exhibits proficiency in a multitude of technologies including C#, ASP.NET, Microsoft SQL Server, Oracle PL/SQL, and modern development tools like Visual Studio. Specializes in financial and accounting software, having developed key applications for revenue management and cloud-based accounting platforms, aligning with industry practices such as SDLC and Agile methodologies. Holds a track record in enhancing legacy systems and integrating APIs with a focus on improving application efficiency and user experience.

I want to work in a well- known company where I can learn and improve my skills while also helping the company run smoothly and achieve success.

Cloud-focused Software Engineer with hands-on experience in full-stack app development, cloud infrastructure, and AI, leveraging a strong foundation in computer systems engineering from Midlands State University. Expertise lies in designing scalable, secure cloud solutions and employing automation in DevOps pipelines, manifested through project work including the development of a Security & Safety Solutions Web App and an AI Customer Feedback Classifier on AWS. Technologically proficient with AWS, Docker, Kubernetes, Terraform, among others, coupled with a background in multiple programming languages like Python, JavaScript, and Java, which was applied in intern role at Fredca Security. Holds AWS Certified Cloud Practitioner and other relevant certifications, underscoring technical proficiency and dedication to cloud services excellence.