Hi, I'm Maxim. 👋

I'm a Full-stack Software Engineer and Tech Lead focused on turning messy product, code, team, and release constraints into clear engineering systems.

I care less about which side of the stack I'm on and more about whether the system is clear, maintainable, debuggable, and actually solves the problem.

I usually work at the point where product requirements, implementation details, architecture decisions, and delivery constraints meet.

• Turn unclear requirements into models, API contracts, technical plans, and releasable slices.
• Build and review frontend, backend, integrations, internal tools, and operational workflows.
• Design boundaries between UI state, services, APIs, databases, mobile clients, and external systems.
• Use DDD, eventual consistency, and other scary words only when they make the system easier to reason about.
• Coordinate delivery across engineering, QA, product, rollout planning, and post-release verification.
• Improve code quality through reviews, conventions, documentation, RFCs, ADRs, and targeted tooling.
• Debug hard problems across performance, memory, data flow, SQL, releases, and production behavior.
• Treat security, correctness, and auditability as product requirements, especially in transaction-sensitive systems.

My commercial background is mostly in fintech, ecommerce, and SaaS, usually around systems where product behavior, delivery pressure, and technical debt had to be made understandable.

Examples I can describe without violating NDAs:

• Coordinated live releases spanning backend, web, iOS, Android, QA, product stakeholders, rollout planning, release checklists, and post-release verification.
• Improved frontend performance by working from real metrics, bottlenecks, and user-visible behavior instead of vibes.
• Traced backend memory leaks across runtime behavior, dependencies, and allocator behavior, including upstream library fixes and allocator changes.
• Drove database design and performance trade-offs across access patterns, query plans, indexing strategy, cardinality, locking behavior, consistency needs, and schema evolution constraints.
• Designed API, data, and consistency boundaries for transaction-sensitive systems, covering correctness, auditability, failure modes, access control, data exposure, and safe operational behavior.
• Built AWS Lambda rendering pipelines for PDF documents and map images generated from vector map data, with strict layout and visual fidelity requirements.
• Designed and helped build large-scale infrastructure discovery and asset inventory workflows, covering collection strategy, orchestration, and implementation details.
• Built a Tizen B2B advertising application where local caching, synchronized multi-device playback, and unreliable system time required explicit engineering workarounds. Yes, NTP can be a plot twist.
• Resolved a hardware-adjacent integration issue by tracing the device interface, validating serial communication with an oscilloscope and USB-TTL adapter, and correcting configuration at the software/device boundary.

A large part of my work is helping teams move forward without turning every technical discussion into a 40-page religious war.

• Code review and architecture review
• RFCs, ADRs, trade-off write-ups, and short internal explanations
• Mentoring engineers and sharing practical engineering knowledge
• Hiring support, technical evaluation, and engineering feedback

I also help teams make technology decisions pragmatically: when to keep the current stack, when to modernize it, and how to migrate without turning the product into a rewrite project.

In practice, that has meant helping teams adopt TypeScript, modern frontend architecture, smaller backend services, and Go where the trade-off favored simplicity, maintainability, and operational clarity.

My public repositories are not a full map of my commercial work, but they show the kind of problems I enjoy: focused tools, developer ergonomics, observability, browser/productivity workflows, WebAssembly experiments, and hardware-side fun.

• hoxxes-briefing - Deep Rock Galactic briefing board built with Solid, Rust, and WebAssembly.
• minimal-chrome-tab - minimal Chrome new tab page for a quieter browser. TypeScript.
• mdns-health-checker - observability: periodic mDNS health checks with Prometheus integration. Go.
• react-map-gl-supercluster - small helper library for react-map-gl and supercluster. TypeScript.
• flipper-zero-2048-reloaded - modernized 2048 game for the Flipper Zero. C.
• knex-tiny-logger - developer tooling: zero-config query logging for Knex. TypeScript.

I like systems where software has to deal with the physical world: Home Assistant, Zigbee2MQTT, Node-RED, ESPHome, device hacking, soldering, and the occasional reminder that manuals are sometimes optimistic.

I also train my cats 🐈, which is a good reminder that not every system accepts commands reliably.

When the weather is kind, I ride an electric unicycle.

• Frontend: React, Solid, browser extensions, component-driven UI, performance debugging.
• Backend: Go, Node.js, TypeScript, APIs, integrations, async workflows, serverless rendering pipelines, memory leak investigation.
• Data: SQL, relational databases, query plans, indexes, consistency, locking, cardinality.
• Systems: debugging, profiling, observability.
• Architecture & delivery: boundaries, ownership, DDD, eventual consistency, RFCs, ADRs, release coordination.
• Product constraints: security, correctness, auditability, operational risk.

• Full-stack does not mean "whatever nobody else wants to do".
• Architecture should reduce confusion, not create rituals.
• Technology should serve the product, not the other way around.
• Documentation is useful when it helps people make decisions.
• "Best practice" without context is cargo cult with better branding.
• Clever code is rarely worth the maintenance tax.

Open to conversations about product engineering, architecture, code quality, technical leadership, developer tooling, consulting, or a messy technical problem that needs a second pair of experienced eyes.

• GitHub: @khmm12
• Email: khmm12@gmail.com
• Telegram: @khmm12
• LinkedIn: Maxim Khvatalin