Dear Hiring Manager,

I am writing to express my interest in the Software Engineer position at your company. With 5 years of experience in software development, with a focus on Software/AI and team leadership. I am a fullstack engineer driven by action and ownership. I thrive as a gap-filler, maker, coder, and OSS contributor — and increasingly, as a technical lead who aligns teams around clear goals. What excites me most is diving deep into both technical challenges and product innovation to build systems that scale and last, while empowering those around me to do the same.

Currently, I am a Senior Software Engineer at BeGroup, one of Vietnam's fastest-growing tech startups (Be super app — 9M+ customers, tens of millions of monthly transactions), where I led multiple high-impact systems:

Selected Projects at BeGroup

Project · Role	Timeline	Impact & Scope
AI Platform Tech Lead · Architect · Embedded PM	Jan 2025 – Present	Led end-to-end design and delivery of an AI Platform powering multiple AI agent products inside the Be ecosystem. Integrated LLMs (OpenAI API), RAG pipelines, and agent orchestration with a lean team.
CDP, Notification & Fraud Detection Senior SWE · Architect · Embedded PM	Apr 2024 – Present	Architected the user engagement backbone (150M+ messages/day) and a real-time fraud detection system (30M+ users, 10K+ fraudulent transactions caught/day). Owned requirements and drove delivery end-to-end across both products.
System Stability & Architecture Senior SWE · Architect	Jan 2024 – Present	Diagnosed memory & goroutine leaks in shared libraries using pprof; conducted internal tech talks to upskill the team. Authored a cross-team Monolith → Microservices proposal — identified systemic risks, defined migration path, and gained alignment from engineering leads and product stakeholders.

Received the BeStar Award 2024 for outstanding engineering contribution.

Before BeGroup, I contributed to a CDP SaaS product at Primedata.ai and owned the Home Assistant iOS application at OLLI Technologies, where I reduced iOS build time by 80% through build system optimization.

Beyond my professional work, I actively contribute to open source — building tools like curl-to-json, gamm, and wg, and diving deep into projects like sabledb and pgroll to understand how systems work under the hood.

My technical toolkit spans Go, Rust, Python, and JavaScript, with deep experience in MySQL, ClickHouse, Redis, Kafka, Kubernetes, and AI/ML integration (LLMs, RAG, agent orchestration, OpenAI API, LangChain). I am particularly energized by the intersection of AI and product — finding practical ways to ship LLM-powered features that create measurable value.

On the leadership and PM side, I bring cross-functional collaboration, stakeholder management, and ownership coaching. Across every project at BeGroup — AI Platform, CDP, Fraud Detection, Event Pipeline — I worked directly with product managers, business owners, and engineers to define requirements, align on trade-offs, and drive delivery. I believe great engineering leadership means setting clear technical direction, removing blockers, and creating space for the team to do their best work. I share knowledge openly through tech talks, proposals, and code review — because a stronger team compounds over time.

I am excited about the opportunity to bring my experience in building large-scale systems, my product thinking mindset, and my leadership approach to your team. I would welcome the chance to discuss how I can contribute to your engineering goals — both technically and as a force multiplier.

Thank you for your time and consideration.

Best regards,
Bany Êban