# Alexander Acebo

> Senior Backend / Systems Engineer | Distributed Systems, Go & Rust

Location: Brooklyn, New York, United States
Profile: https://flows.cv/alexanderacebo

Senior backend / systems engineer with 9+ years building distributed systems in production environments at Microsoft, Meta, and high-growth startups.

Currently leading AI infrastructure for Microsoft Teams agents, focused on memory systems, multi-tenant isolation, developer experience, and low-latency retrieval at scale.

Deep experience in Go and Rust, designing systems around concurrency, data consistency, observability, and failure recovery. Comfortable owning ambiguous problems end-to-end, from architecture to production rollout.

## Work Experience
### Senior Software Engineer Technical Lead @ Microsoft
Jan 2023 – Present | New York, New York, United States
Staff-level IC leading architecture and technical direction for the Microsoft Teams developer platform, with responsibility for long-term scalability, API design, and ecosystem health

Conceived, pitched, and delivered a full rewrite of the Teams SDK stack, replacing legacy products with modern, production-grade SDKs in TypeScript, Python, and C#

Drove the initiative from hackathon proposal to GA, owning system design, cross-language API consistency, migration strategy, and production rollout across multiple Microsoft orgs

Established platform primitives and abstractions used by internal and external teams to build Teams agents and bots, significantly improving developer velocity and correctness

Led cross-org collaboration with platform, documentation, and partner teams to coordinate deprecation of legacy SDKs and align on a single, forward-looking developer experience

Currently architecting and building a new agent memory service and supporting infrastructure, enabling automatic persistence and retrieval of agent and user memories through a developer-facing API

Designing distributed systems with a focus on multi-tenant isolation, access control, data durability, and low-latency retrieval at scale, supporting enterprise and consumer workloads

Acts as a technical authority across teams, reviewing designs, unblocking complex problems, and setting engineering standards for backend and platform development

### Senior Software Engineer @ Meta
Jan 2021 – Jan 2023 | San Francisco Bay Area
Backend engineer on Meta’s Business Messaging platform, supporting high-throughput communication between businesses and billions of users across WhatsApp, Messenger, and Instagram

Designed and maintained distributed backend services handling tens of millions of messages per day with strict latency, reliability, and correctness requirements

Led backend development for features enabling business-to-user messaging workflows, including message routing, state management, and delivery guarantees

Improved system reliability and tail latency by optimizing critical request paths, reducing p99 latency by ~30% under peak traffic

Worked on horizontally scalable services written primarily in Go, integrating with Meta’s internal RPC, storage, and observability infrastructure

Partnered closely with product, infra, and client teams to ship features end-to-end, from design review through production rollout

Contributed to on-call rotations for tier-1 services, debugging production issues at scale and driving post-incident improvements

### Senior Software Engineer @ Pager
Jan 2020 – Jan 2021 | New York, United States

### Senior Software Engineer @ Swimlane
Jan 2019 – Jan 2020


## Education
### Bachelor's degree in Computer Science
Champlain College
Jan 2012 – Jan 2016


## Contact & Social
- LinkedIn: https://linkedin.com/in/alexanderacebo

---
Source: https://flows.cv/alexanderacebo
JSON Resume: https://flows.cv/alexanderacebo/resume.json
Last updated: 2026-03-22