Senior Backend Engineer // Distributed Systems

BUILDING DISTRIBUTED BACKEND SYSTEMS AT SCALE.

Alexander Seliukov · Budva, Montenegro

8+ years designing and operating high-load services. Go, Node.js, PHP and Rust. Deep in API design, PostgreSQL, event-driven messaging and AWS. Currently building payment and Web3 platforms at Arcanite.

Terminal_Output

$locate --skills "backend"

> Go / Rust / Node.js / PHP> PostgreSQL / Redis> Kafka / RabbitMQ / NATS> AWS / Docker / GitLab CI

$status --available

Core Skills

01 — Stack

01 / Languages

Go, Node.js, TypeScriptPRIMARY

PHP (Laravel, Symfony, Swoole)8Y

Rust (production)2Y

Java, KotlinCOMMERCIAL

02 / Data & Messaging

PostgreSQL — schema & tuningPRIMARY

Redis / MySQL / MongoDBSTORAGE

Kafka, RabbitMQ, NATSSTREAMS

Redis Streams, SurrealDBEXTRA

03 / Cloud & Infra

AWS — ECS, ECR, EC2, S3CLOUD

Docker, Linux, Nginx, CaddyRUNTIME

GitLab CI/CD, AnsibleDELIVERY

REST, GraphQL, gRPC, WebSocketsAPIS

Selected Systems

Systems catalog v.2024

Rust · Kafka

Event processing

Rust Kafka Consumer

High-throughput Kafka consumer in Rust processing transaction event streams with strict ordering, predictable back-pressure and zero data loss.

PHP · NATS

Async workers

PHP + Swoole NATS Consumer

High-load NATS consumer written in pure PHP on Swoole, sustaining thousands of concurrent messages per instance for asynchronous product workflows.

Go · Node · PHP

Platform services

Payment & Web3 Backend

REST/GraphQL services in Go, Node.js and PHP for payment providers and on-chain Web3 flows. Idempotent pipelines, reconciliation and audit trails.

PostgreSQL

Latency tuning

PostgreSQL Performance

Schema modeling, index strategy and rewrite of hot queries on latency-critical endpoints. Reduced p95 latency and cost on production workloads.

Work History

Backend Engineer @ Arcanite

Dec 2020 — Present

Backend services for payment, Web3 and internal platform products.

/ Designed and shipped services in Go, Node.js and PHP with REST and GraphQL APIs.
/ Wrote a production Kafka consumer in Rust and a NATS consumer in PHP + Swoole.
/ Modeled PostgreSQL schemas, tuned indexes and rewrote hot queries.
/ Deployed on AWS (ECS, ECR, EC2, S3) via GitLab CI/CD; owned services end-to-end.