Hey, I'm Ivan Tlaseca
I'm a software engineer who builds full-stack systems, internal tools, and developer workflows, using AI to improve how engineers work.
Experienced in building production systems at Bloomberg LP. Open to full-stack, forward-deployed, solutions, and customer engineering roles. Bilingual in English and Spanish.
Building practical systems. Making them understandable.
I'm a software engineer who built and maintained production systems at Bloomberg LP — full-stack development, infrastructure migrations, and internal tooling used by 27,000+ employees globally.
I worked across teams to support infrastructure migrations and improve engineering workflows. Outside of the technical work, I've mentored students and coached non-technical leaders — which shapes how I communicate and collaborate.
I'm looking for roles where I can build things that work, contribute across teams, and engage directly with the problems my work is solving. Particularly interested in full-stack, forward-deployed, solutions, and customer engineering positions.
Where I've worked
- Built and maintained full-stack systems supporting internal productivity tools used by 27,000+ employees globally.
- Led investigation of a production issue during a migration impacting 27,000+ users, identifying root causes across services and driving a safe staged rollout.
- Improved SSL certificate renewal efficiency through documentation improvements and AI-assisted troubleshooting, enabling engineers to complete renewals up to 50% faster.
- Contributed to infrastructure migrations including Oracle to Postgres, IAM modernization, and Exchange Online, implementing API changes across backend services.
- Built an MCP server integrated with Copilot to retrieve event data across 5 internal APIs, delivering a working prototype with a new team on an unfamiliar codebase.
- Worked across teams to support infrastructure migrations and improve engineering workflows on a team of 16+ engineers.
- Developed and improved frontend features for the Inbox UI using React and Node.js, enhancing performance and user experience.
- Navigated a large production codebase to implement features using feature flags for safe rollout.
- Collaborated with designers and engineers to build scalable, responsive web applications.
- Participated in Agile ceremonies with 10+ team members.
- Mentored 50+ high school students, providing tailored academic guidance.
- Presented monthly leadership trainings to 12+ participants.
- Onboarded 250+ chapter presidents with technical tools and operational fundamentals.
Work worth pointing at
Migration Issue — 27,000+ Users
Led the investigation of a production issue during a large-scale user data migration at Bloomberg. Identified root causes across services and coordinated a safe staged rollout to resolve the incident.
SSL Renewal Efficiency — 50% Faster
Improved SSL certificate renewal workflows by rewriting documentation and introducing AI-assisted troubleshooting steps. Engineers completing renewals saw up to a 50% reduction in time.
MCP Server + Copilot Integration
Built a Model Context Protocol (MCP) server integrated with Copilot to process user queries and retrieve event data across 5 internal APIs. Ramped quickly on an unfamiliar codebase to deliver a working prototype.
A few working principles
Understand the problem before touching the code.
I read the system, trace the data, and ask the right questions before proposing a solution. Skipping this step is how you fix the wrong thing.
Break ambiguity into smaller, answerable questions.
When a problem is unclear, I don't wait for it to resolve itself. I identify what I do and don't know, then move forward on what I can.
Ship something that works, then make it better.
I favor pragmatic solutions over perfect ones — get it working, get it reviewed, improve it with more information. Done beats theorized.
Communicate clearly across the stack.
I write for the person reading it next — whether that's documentation, a commit message, or an explanation to someone non-technical. Clarity is part of the job.
What I work with
Technical
Interpersonal
Let's talk
If you're working on something interesting or want to discuss a role, reach out directly. I'm open to conversations about full-stack, forward-deployed, solutions, and customer engineering positions.