Lester Cerioli

As CEO of Lucas Technology Service, I lead the strategic evolution of the firm from a regional player to a global technology powerhouse. My tenure has been defined by bold infrastructure shifts and portfolio diversification. Key milestones include the architectural decision to implement proprietary data centers across 40 countries, ensuring unparalleled service reliability. By integrating Digital Product Development into our core business model, I successfully unlocked new revenue streams that significantly scaled our annual turnover. Today, I oversee our global operations spanning 44 countries, driving innovation at the intersection of infrastructure and digital transformation. - Great experience and relevant with Digital Products scalability focused on Business Strategy and Technology

As Founder of Lucas Technology Service, I have dedicated over two decades to building, scaling, and transforming the company into a global leader in technology, engineering, and digital innovation. My journey has been defined by pioneering initiatives, strategic foresight, and relentless commitment to excellence. - **Company Creation & Vision:** Established Lucas Technology Service in 2000 with the mission of delivering cutting-edge software engineering, cloud infrastructure, and digital solutions to global enterprises. - **Global Expansion:** Led the company’s growth from a local startup into a multinational organization with operations spanning 40 countries and 50 proprietary data centers, ensuring autonomy and resilience in computational power and services. - **Digital Innovation:** Directed the development and launch of more than 500 digital product projects, diversifying the company’s portfolio and driving sustained revenue growth across multiple industries. - **Workforce Evolution:** Transitioned the organization into a fully remote workforce, fostering global collaboration, flexibility, and productivity while achieving a 70% salary increase across the company. - **Technological Leadership:** Championed Infrastructure as Code (IaC), DevOps practices, and cloud-native architectures, positioning the company at the forefront of automation, scalability, and operational efficiency. - **Strategic Impact:** Oversaw the integration of AI, quantum computing, and advanced cloud platforms into the company’s offerings, reinforcing its reputation as a trusted partner for digital transformation. - **Business Growth:** Negotiated international contracts, managed risk, and aligned technological innovation with business strategy to secure long-term sustainability and competitive advantage.

During my tenure as CEO and CTO, I spearheaded a decade of transformative growth and innovation at Lucas Technology Service. My leadership was instrumental in scaling the company’s global operations and driving strategic initiatives that reshaped its technological and business landscape. - **Workforce Transformation:** Transitioned the company from onsite operations to a fully remote model, enabling global collaboration and flexibility while boosting productivity. - **Employee Growth:** Achieved a 70% salary increase across the organization, reinforcing talent retention and recognition of high-performance teams. - **Digital Product Expansion:** Oversaw the successful delivery of more than 500 digital product projects, diversifying the company’s portfolio and significantly increasing revenue streams. - **Global Infrastructure:** Directed the design and deployment of 50 proprietary data centers across 40 countries, granting the company greater autonomy over computational power and operational control. - **Innovation in Infrastructure:** Introduced Infrastructure as Code (IaC) practices, enhancing scalability, automation, and reliability in cloud and on-premises environments. - **Business & Technology Integration:** Coordinated technological strategy with business objectives, ensuring sustainable growth and competitive advantage in international markets. This trajectory reflects my commitment to building resilient, future-ready organizations that thrive on innovation, operational excellence, and global scalability.

- Neural Network Architectures - Designed and implemented deep learning models (CNNs, RNNs, Transformers). - Tools: **TensorFlow, PyTorch, Keras** for model development and training. - Large Language Models (LLMs) - Developed and fine‑tuned LLMs for NLP tasks such as text generation and conversational AI. - Tools: **Hugging Face Transformers, OpenAI APIs, LangChain** for orchestration and deployment. - Machine Learning Systems - Built end‑to‑end ML pipelines covering data ingestion, preprocessing, training, evaluation, and deployment. - Tools: **scikit‑learn, MLflow, Kubeflow, Airflow** for workflow automation and experiment tracking. - Scalability and Infrastructure - Defined architecture requirements for distributed training and inference. - Tools: **Docker, Kubernetes, Ray, Apache Spark** for containerization, orchestration, and distributed computing. - Cloud platforms: **AWS SageMaker, Azure Machine Learning, Google Vertex AI** for scalable AI workloads. - Data Management and Integration - Designed architectures supporting structured and unstructured data. - Databases: **Postgres, SQL Server, MySQL, MongoDB**. - Message brokers: **RabbitMQ, Apache Kafka** for event‑driven architectures. - Monitoring, Governance, and Compliance - Established requirements for model monitoring, explainability, and compliance. - Tools: **Prometheus, Grafana, Evidently AI, SHAP, LIME** for monitoring and explainability. - Implemented logging, auditing, and version control with **Git, DVC**.

Role Overview: As a Senior Python Engineer at Lucas Technology Service, I lead the development and maintenance of robust, scalable, and high-performance software solutions. I collaborate with cross-functional teams to design, develop, and deploy Python-based applications, ensuring they meet the highest standards of quality and efficiency. Key Responsibilities: * Architecting and implementing backend services and APIs using Python frameworks such as Flask and FastAPI. * Developing data processing pipelines and ETL processes for data lake integrations on Azure using Spark and Azure Data Lake. * Leading the design and implementation of a blockchain payment integration service for Ethereum transactions. * Building and maintaining CI/CD pipelines with Azure Pipelines for seamless deployment and integration. * Creating RESTful APIs and managing databases, including SQL Server, to support various business applications. *Developing complex data models and performing migrations using SQLAlchemy. *Collaborating with frontend teams to build full-stack solutions using React JS and Python. *Ensuring security best practices are followed in authentication, authorization, and data protection. *Mentoring junior developers and conducting code reviews to uphold coding standards and best practices. Skills: * Python, Flask, FastAPI * Entity framework Core /Dapper * Rabbit Mq topics and channels configurations * NET 3.1/5/6/7 and 8.0 * SQLAlchemy, SQL Server * NET APIs integrations * Python spark scripts * Spark, Azure Data Lake * CI/CD with Azure Pipelines * Blockchain integration * Software development with GoLanf mainly API Rest development using GIN, GORM, ECHO and GORLLA * RESTful API design * Frontend development with React JS and next js * Experience with UI design * Experience with Tailwind CSS * Experience with responsive apps building * Experience with Javascript and Typescript * Data modeling and migrations * Security best practices

At Lucas Technology Service, I served as Project Manager overseeing the delivery of strategic technology initiatives. I was responsible for planning and tracking project milestones, coordinating agile squads, and managing communication between stakeholders across engineering, product, and business operations. I helped teams prioritize tasks, remove blockers, and maintain execution rhythm in hybrid environments. I led cross-functional syncs, steered sprint ceremonies, and drove clarity between development progress and business goals. I also supported career development through structured 1:1s, performance feedback, and leadership mentoring. My role focused on combining strong project governance with a collaborative culture—ensuring on-time delivery and scalable impact across high-traffic SaaS platforms.

Innovative Blockchain Architect with extensive experience in designing and implementing scalable, secure decentralized solutions. Passionate about Web3, DeFi, NFTs, and smart contract development, with a strong background in Ethereum, Solidity, Hyperledger, and distributed ledger technologies (DLT). Proven track record in building robust blockchain infrastructures, optimizing consensus mechanisms, and leading cross-functional teams in delivering cutting-edge decentralized applications (dApps). 🔹 Core Expertise: ✔ Blockchain Architecture – Designing high-performance, fault-tolerant networks (public, private, hybrid). ✔ Smart Contracts – Development & auditing (Solidity, Rust, Vyper) for DeFi, DAOs, and enterprise use cases. ✔ Web3 & DeFi – Building protocols, tokenomics, and cross-chain interoperability solutions. ✔ Security & Scalability – Implementing layer-2 solutions (ZK-Rollups, Optimism), sharding, and PoS/PoW mechanisms. ✔ Enterprise DLT – Hyperledger Fabric, Corda, and bespoke consortium blockchains. ✔ DevOps for Web3 – CI/CD pipelines, containerized nodes (Docker/Kubernetes), and node orchestration. 🔹 Career Highlights: Encourages engagement without being pushy.

Specialist in scalable, high-performance architecture, combining software engineering, data processing, cloud computing, and infrastructure automation. I design end-to-end architectures ensuring integrity, efficiency, and reliability in business-critical systems, transforming complex requirements into robust, future-ready solutions. **What I Do** **Software Engineering & DevOps Architecture** - **Architect & Design**: Define and implement backend architectures in Go, with APIs, microservices, and distributed systems. - **Performance & Reliability**: Establish patterns for high availability, resilience, and process optimization. - **Automation & Integration**: Architect CI/CD pipelines and containerized environments with Kubernetes, Docker, and Terraform. - **Cloud Strategy**: Design and manage native cloud solutions on AWS and Azure, aligned with scalability and cost efficiency. - **Security & Observability**: Embed security frameworks and monitoring solutions with Grafana, Prometheus, and Elasticsearch. **Data Engineering & Analytics Architecture** - **Big Data Solutions**: Architect large-scale data frameworks using Apache Spark and Databricks. - **Data Lake Strategy**: Design and manage data lakes on AWS and Azure for efficient ingestion, storage, and retrieval. - **ETL & Pipelines**: Orchestrate ETL workflows with Apache Airflow, Kafka, and Glue, ensuring seamless data movement. - **Database Architecture**: Optimize PostgreSQL, MySQL, SQL Server, and NoSQL (MongoDB, Redis) for performance and scale. - **Data Governance**: Implement secure, compliant data strategies for critical business information. **My Approach** I operate at the intersection of engineering and architecture, ensuring solutions are technically sound and strategically aligned with business objectives. With a focus on scalability, automation, and resilience, I transform data and infrastructure into a competitive advantage.

Developed and maintained backend applications in Java, following Clean Code and SOLID principles. Worked on microservices projects with integration to Oracle and MongoDB databases. Used Git for version control and team collaboration. Participated in the full project lifecycle, from refinement to production deployment. Implemented automated testing (JUnit, Mockito) and code reviews. Worked in Agile methodologies (Scrum/Kanban). Developed RESTful APIs with Spring Boot. Integrated with Angular frontend. Optimized SQL queries in Oracle databases. Collaborated in cross-functional teams with a focus on continuous delivery. Technical Skills Backend: Java (Spring Boot, Microservices, JPA/Hibernate) Frontend: Angular, HTML/CSS, JavaScript/TypeScript Databases: Oracle, MongoDB, SQL DevOps/Cloud: AWS (EC2, S3, Lambda), Docker, Kubernetes (plus) Methodologies: Scrum, Kanban, CI/CD Tools: Git, OpenShift (plus), Jira Languages English (C1 – Advanced) Relevant Projects Integrated Management System (SGI) Backend in Java + Spring Boot, frontend in Angular. Microservices architecture with Docker and AWS: GitHub Link Oracle database for transactions and MongoDB for logs. Payments API Developed a RESTful API for transaction processing. Integrated with legacy systems and JWT authentication.

Experience with OpenLens for monitoring Kubernetes clusters. Strong expertise in Kubernetes, including deployment, management, and monitoring. Experience with Azure Kubernetes Service (AKS), Azure Container Apps, and Azure Container Registry. Extensive experience with Infrastructure as Code (IaC) using Terraform to automate and provision cloud environments. Container scalability experience, ensuring optimized performance and cost-efficiency. API deployment expertise for applications developed in .NET, Go, Python, and Java. Experience in building CI/CD pipelines to automate deployment and integration processes. Microsoft Azure expertise, including resource management and cloud-based solutions. Experience with Azure Functions for serverless computing and event-driven architectures. Strong database experience with SQL Server, PostgreSQL, and MongoDB as data services. Monitoring and observability expertise using Prometheus and Grafana. Experience with Helm for Kubernetes package management and deployment automation. Linux system experience, including Debian, CentOS, Fedora, and Ubuntu as server environments. DataOps expertise, ensuring efficient data workflow orchestration and automation. Experience in data workflow management and large-scale data pipeline automation. Hands-on experience with Databricks for big data processing and analytics. Frontend deployment experience for applications built with Angular, React.js, and Next.js, ensuring seamless integration with data-driven backends. With a strong focus on DataOps, Kubernetes, Cloud Infrastructure, and scalable data processing, I bring extensive expertise in designing, automating, and optimizing data-driven environments for modern applications. #kubernetes #graphana #prometheus #linux #terraform #docker #azure #aws #serveless #cicd

Highly skilled software engineer with over eight years of experience in backend development using Python and Golang, specializing in blockchain technology, Bitcoin payment gateways, and decentralized applications. Proven ability to design and implement scalable, secure, and high-performance microservices and APIs. Passionate about leveraging blockchain innovations to develop financial and payment solutions.

Project management, enterprise software development, datacenter operations, implement cloud infrastructure technology and Devops maintenance of legacy software Worked with: -Nest Js/ Node js - Typescript/ Javascript - Prisma framework - JUnit/ Cypress - MongoDB - Kubernets - Docker - MySql -Python 3,9/3.10/3.12 - Django Framework - Flask framework(Web Apis) - Angular / React .js development - Ionic(based on Angular) development - Experience with microservices building with java 14/16 and Kotlin - Experience with Hibernate - Data implementations with Entity Framework Core and Dapper -NET 3.1, NET 5, NET 6 and NET 8 microservices implementations - Service workers and Service mesh implementations

-> Strong experience with Solution Architecture -> large experience with Azure Serverless and AWS Functions -> experience with CI/CD workflows -> experience with React Js development -> strong experience with microservice building with NET and Nest js -> experience with Python(APIs building) -> experience with Service Mesh and API Gateway -> experience with Queues and Message-Brokers(Apache Kafka, Azur Bus) -> large experience with relational databases(Sql Server, MySql and Oracle) and No-Sql databases(Mongo DB and Redis) - experience with Unit tests like XUnit, JUnit and web tests like Cypress =>mobile development using Xamarin and Android => C++microservice building; => Experience with Golang to build microservices => Strong experience with SpringBoot, Java 7/8 => Experience with Maveen

* Software development building features for backend; SOA using; Web Forms development with NET Framework and CSharp; databases building. * Knowledge of responsive design principles and experience building mobile-first websites. * React Js development experience * Familiarity with web performance optimization techniques and tools. * Excellent problem-solving and analytical skills. * Flutter development experience to mobile development * Strong experience with EF Core and Dapper * Experience with Hexagonal Architect nad BFF

- backend development using Java, PHP and NET Framework - queries building on Sql Server (Storage procedures) - Wordpress development - NET development using - Javascript using - desktop applications development

Worked like voluntary software engineer improving open source applications that belong at Debian distribution.

Development of application for consultation of literary works as well as loan registration

Developed desktop systems later migrating to Web. He started in the position of Junior and later was promoted to full developer. C++ desktop applications building Worked with Delphi

The Business Information Technology MBA program at Stanford University is a highly selective, interdisciplinary program that combines business and technology coursework to prepare graduates for leadership roles in tech-driven industries. The program focuses on developing the skills and knowledge needed to manage and lead complex technology projects, innovate and launch new products, and drive growth in tech-focused companies. Students in the program are immersed in a rigorous curriculum that combines core MBA coursework with specialized courses in information technology, innovation, entrepreneurship, and data analytics. They also have the opportunity to take elective courses that align with their interests and career goals.