Gabriel Bernal
Bogotá
Summary
Experienced with developing complex software systems and leading engineering teams to successful project completions. Utilizes expertise in both front-end and back-end technologies to drive innovation and efficiency. Track record of fostering collaborative environments and delivering reliable, high-performance solutions. As a leader, collaborate with interdisciplinary teams, share knowledge and experience, and promote continuous improvement and innovation.
Overview
13
13
years of professional experience
Work History
Staff Software Engineer
Minteo Stablecoin Ltd.
08.2025 - Current
- Designed and implemented scalable blockchain solutions for stablecoin transactions.
- Led cross-functional teams in the design and implementation of decentralized finance solutions, enhancing user experience.
- Mentored junior engineers on blockchain best practices and software development techniques to improve team efficiency.
- Spearheaded performance optimization initiatives, resulting in reduced transaction processing times across platforms.
- Analyzed system architecture for scalability improvements, contributing to a robust infrastructure supporting rapid growth initiatives.
Technical Lead
Bilingual Child Care Training
09.2024 - 08.2025
- Coordinated with cross-department teams like QA, DevOps, and Support to ensure seamless end-to-end software delivery process.
- Led a team of developers to successfully deliver high-quality software projects on time and within budget constraints.
- Evaluated and recommended new tools and technologies that resulted in increased development efficiency and up-to-date technical skillsets within the team.
- Orchestrated transition to Cloud, microservices an AI driven architecture, enabling faster feature deployment and greater system flexibility.
- Optimized resource allocation for projects, ensuring optimal use of team skills and minimizing project costs.
- Mentored junior developers through regular 1-on-1 meetings, providing guidance on best practices, coding standards, and career growth opportunities.
- Remote
Senior Software Engineer
MercadoLibre
02.2021 - 07.2024
- Designed and implemented distributed, scalable applications using Java and Golang, focusing on minimal APIs, and high-availability microservices to optimize response times and simplify maintenance.
- Integrated facial recognition with AWS Rekognition for KYC authentication and content moderation, incorporating these flows into high-traffic systems to enhance accuracy and security in real time.
- Configured robust architectures using Event Sourcing in Java and Golang to maintain system state immutability and traceability in distributed environments.
- Leveraged multiple AWS services (such as S3, DynamoDB, and Lambda) to build a scalable, cost-effective infrastructure, optimizing data integration and storage in the system.
- Developed and maintained CI/CD pipelines to ensure fast, secure deployments in cloud environments, integrating AWS services to facilitate continuous delivery.
- Built and optimized backend services using Hexagonal Architecture principles, achieving reduced coupling and allowing independent evolution of components.
- Collaborated with data science and DevOps teams to enhance platform performance and scalability, maximizing the use of AWS tools for flexible and efficient implementations.
- Implemented integration and End-to-End (E2E) testing to ensure the proper functioning of services and verify complete flows in real-world scenarios.
- Remote
Software Life-cycle Administrator
SISTRAN
07.2020 - 02.2021
- Managed and optimized the lifecycle of critical applications through advanced CI/CD practices, achieving fast, automated deployments to ensure service continuity.
- Implemented data lifecycle policies with AWS (such as automated retention and storage optimization in S3 Intelligent-Tiering), achieving efficient cost management and compliance.
- Designed and maintained microservices infrastructure focused on scalability and resilience, applying decoupling and modularity principles to facilitate deployment and maintenance.
- Monitored and audited distributed systems, improving traceability and optimizing response times to incidents.
- Contributed to the implementation of Hexagonal Architecture, enabling more agile and flexible development of critical services.
- Implemented integration and E2E tests to ensure quality at every stage of the development lifecycle.
Senior Software Design Engineer
SISTRAN
01.2017 - 07.2020
- Designed and developed solutions for policy issuance and claims processing using .NET Core and C#, focusing on building high-availability microservices to handle large volumes of transactions reliably and securely.
- Created efficient RESTful APIs with ASP.NET Core, optimizing data exchange between services and improving system responsiveness and resource utilization.
- Leveraged Entity Framework Core for complex data handling and seamless integration with SQL Server, ensuring data consistency and high-performance querying for policy and claims records.
- Implemented a robust event-driven architecture using Azure Event Grid and Service Bus to handle policy issuance, payments, and claims notifications, ensuring real-time processing and high fault tolerance.
- Integrated Azure Logic Apps and Azure Functions for automated workflows, streamlining the process of premium collection, policy renewals, and claims updates while reducing manual intervention.
- Built CI/CD pipelines with Azure DevOps to automate deployment and testing, ensuring smooth releases and minimizing the risk of issues in production environments.
- Led the team in implementing unit, integration, and End-to-End (E2E) testing for critical processes, ensuring that new features met reliability and performance standards before deployment.
- Worked closely with business analysts and product managers to align technical solutions with business requirements for policy and claims management, ensuring that the platform met evolving regulatory and compliance standards.
- Enhanced the scalability and flexibility of core services through Hexagonal Architecture principles, allowing the seamless addition of new features, such as customer portal enhancements and real-time claim tracking, without impacting core business logic.
- Provided mentorship on best practices in C# and .NET Core, and promoted the adoption of secure coding practices, improving the overall code quality and maintainability across the team.
Semi Senior Software Engineer
SISTRAN
01.2015 - 02.2017
- Developed distributed applications and microservices using .NET Core and C#, achieving scalability and performance improvements in high-demand systems.
- Implemented and optimized RESTful APIs with ASP.NET Core, ensuring efficient and secure service communication.
- Introduced functional programming principles to improve code modularity and predictability, facilitating efficient error handling and data flow.
- Used Entity Framework Core for database interactions, optimizing queries and ensuring optimal performance in data access.
- Improved CI/CD infrastructure with Azure DevOps tools, automating .NET service deployments and maintaining a continuous development flow.
- Developed and executed integration and E2E tests to validate application stability and reliability in production.
Junior Developer
SISTRAN
05.2013 - 01.2015
- Developed and maintained back-end and front-end applications using .NET, focusing on scalability and performance optimization.
- Collaborated on microservices and event processing projects, gaining experience in event-driven architecture and modern system design principles.
- Participated in implementing CI/CD practices and optimizing processes, gaining experience in agile and collaborative development practices.
- Contributed to the development and maintenance of critical components in authentication systems, establishing a strong foundation in secure, scalable development practices.
- Executed integration and E2E tests to validate the proper functioning of services and the quality of delivered solutions.
Education
ITIL Foundation Certificate - IT Service Management
AXELOS
Bogotá, ColombiaMicrosoft Certified Professional - undefined
Microsoft Colombia
Bogotá, ColombiaTechnologist - Systems Analysis And Design, Computer Science And Programming
National Learning Service (SENA)
Bogotá, ColombiaSkills
- DDD, TDD and BDD approaches
- Event-driven architectures
- Functional and Reactive Programming
- Automation of Testing and Deployments
- Design Patterns
- Agile Methodologies (SCRUM, Kanban, Crystal Clear)
- CQRS
- SQL and NoSQL technologies (MongoDB, Redis, DynamoDB, DatomicDB, Transact-SQL, PL/SQL, etc)
- Common web frameworks (Django, SpringBoot, NET Core, NET Framework, Ring, EF Core, etc)
- Complex problem-solving and solutions-oriented mindset
- Proficient in Java, Kotlin, Go, Python, React, Redux, NodeJS, TS, Clojure, ELM, Elixir, Haskell, Scala, C#, VBNET, F#, C and others
- Immutable robust architectures
- Solid knowledge in SLDC/SLTC processes in CI/CD pipelines and containerized applications
- Design of zero downtime solutions oriented and distributed scalable systems
- Proficient in common cloud Platforms (AWS, GCP and Azure)
- Critical Thinking and Decision-Making Capabilities
- Quality-first mindset for oriented-automation tools
- Technical mentoring
- Team leadership
- Interpersonal relationship building
- Web application development
Accomplishments
- Business-based E2E tests component designed and implemented using Clojure.
- Solid practical knowledge acquired in building interpreters, improving business process readability to 300% using Clojure.
- Exhaustive property-based testing using Scala, ensuring 100% business process quality.
- Developed solid working knowledge of engineering, design and architecture as Technical Lead on team of 15.
Languages
Spanish
Native or Bilingual
English
Professional Working
Colombian Sign Language
Full Professional
References
- Walther PARRADO, SR Software Engineer, +57 314 431 4658, TrafficTech, Colombia
- Michael MARTINEZ, MercadoPlay Technical Lead, +57 300 611 1867, MercadoLibre, Colombia
- Óscar GOMEZ, MercadoLibre Software Manager, +57 311 561 5717, MercadoLibre, Colombia
Timeline
Staff Software Engineer
Minteo Stablecoin Ltd.
08.2025 - Current
Technical Lead
Bilingual Child Care Training
09.2024 - 08.2025
Senior Software Engineer
MercadoLibre
02.2021 - 07.2024
Software Life-cycle Administrator
SISTRAN
07.2020 - 02.2021
Senior Software Design Engineer
SISTRAN
01.2017 - 07.2020
Semi Senior Software Engineer
SISTRAN
01.2015 - 02.2017
Junior Developer
SISTRAN
05.2013 - 01.2015
Microsoft Certified Professional - undefined
Microsoft Colombia
Technologist - Systems Analysis And Design, Computer Science And Programming
National Learning Service (SENA)
ITIL Foundation Certificate - IT Service Management
AXELOS