Gustavo Castillo Email & Phone Number

Buffalo Grove, Il, Us

Alpharetta, Georgia, Us

Direct two verticals at this company after it acquired Apex Crypto. Oversee an organization of 20 people, including Senior Directors.▪ Oversee the convergence of redundant cloud providers after the acquisition to realize $400k in cost savings.▪ Spearhead the integration of two disparate systems, allowing both systems to communicate effectively and at a high scale during a merger.

Alpharetta, Georgia, Us

Directed the Consumer organization consisting of 12 employees across three scrum teams, including development and QA resources in Chicago, Atlanta, and Northern Ireland, ensuring effective coordination and collaboration among all team members.▪ Revamped the continuous integration and delivery pipelines to enhance deployment efficiency and eliminate manual overhead, resulting in a more streamlined and automated process.▪ Actively contributed to at-risk projects, providing hands-on support to ensure timely delivery and maintain high-quality standards, mitigating potential delays and issues.▪ Led initiatives to integrate fiat onboarding solutions in collaboration with Apex Crypto to develop a cohesive product offering.

Dallas, Texas, Us

Superintended the Trading organization, comprising eight developer and QA resources based in Chicago and Northern Ireland, to ensure seamless operation and effective team collaboration.▪ Executed enhancements to FIX gateways, enabling clients to submit orders at a rate of 300 requests per second, thereby significantly increasing system throughput.▪ Transformed the settlement, transaction, and ledger systems to boost performance and incorporate features for managing buying power and fund reservation, resulting in improved system capabilities and efficiency.▪ Established microservice architecture and SLDC process still used by the company today.▪ Wrote 40% of code on the trading platform and, as the top contributor to the codebase, wrote 10% of code on the consumer platform, demonstrating technical prowess. Accomplished project in 12 months with over 80 developers contributing to the project.

Dallas, Texas, Us

Developed and maintained technical documentation, including design specifications and architectural diagrams. Fostered a culture of collaboration, accountability, and continuous learning within the engineering team.▪ Worked on the platform initially as an individual contributor, building and developing the platform and team.▪ Executed a seamless transition from a homegrown messaging service to Kafka, ensuring minimal disruption and enhanced messaging reliability.▪ Formulated and instituted best practices for operating within large microservice architectures, promoting consistency and efficiency across the development teams.▪ Developed SLDC process to increase development and QA productivity. The process was adopted by the greater organization.

Atlanta, Ga, Us

Spearheaded decisively during crises, demonstrating the ability to make informed and effective decisions under pressure to maintain project continuity and mitigate risks.▪ Partnered with product owners to establish the scope and objectives for new products or features, ensuring alignment with business goals and user needs.▪ Developed comprehensive project plans, meticulously outlining timelines, resource requirements, and key milestones to ensure successful project execution.

New York, Ny, Us

Instituted coding standards and defined automated test requirements to be enforced during the build process. Collaborated directly with product owners to devise solutions and set clear expectations.▪ Conceived and developed the alerts-core library, forming the foundational framework for the entire alerts platform.▪ Minimized risks and ensured the timely delivery of roadmap items by prioritizing achievable goals within existing resource and time constraints.▪ Engineered and deployed a solution to enhance the platform's scalability, increasing transaction capacity from 300 to over 60,000 transactions per second using existing hardware and resources.▪ Guided and coached over 20 developers, enabling them to deliver production-ready solutions that consistently meet high-quality standards.

Atlanta, Ga, Us

Spearheaded applications' design, development, and testing phases integrating with advanced Java 8-based backend systems.▪ Orchestrated the creation and deployment of a quote submission system utilizing FIX protocol and Akka for message-driven event processing.▪ Conducted training sessions and crafted comprehensive documentation outlining troubleshooting procedures for support teams, enhancing operational efficiency in production support.

Directed the development and deployment of a managed accounts platform, enabling participants to strategize and achieve their retirement objectives.▪ Formulated annual technical roadmaps and executed the implementation and delivery of each milestone with precision and accountability.▪ Oversaw and coordinated multiple international Agile teams of Software Engineers to successfully deliver and implement critical software projects predominantly using Java.▪ Engineered Maven plugins to enhance and standardize our build process, optimizing efficiency and reliability.▪ Mentored the development of core services, such as News, Alerts, and Search services, ensuring robust and scalable solutions.

Chicago, Il, Us

Charlotte, Nc, Us

Headed the development of a high-performance, low-latency Java trading application to oversee risk management for U.S. Treasuries within a Linux-based environment.▪ Directed an international Agile team in executing and delivering a high-performance, low-latency risk management Java-based system, connecting seamlessly with multiple foreign exchange ECNs such as Reuters, Hotspot, and FXall.▪ Developed a transport library utilizing Java NIO specifically designed for scalable TCP services, enhancing network communication efficiency and reliability.

New York, Ny, Us

Ms, Software Engineering

Bs, Computer Science