Dmytro Nedilko

Less cost. Less latency. Less downtime.

I build backends and cloud infrastructure, with more than a year of commercial experience in an AI-native workflow.

Results

What changed, in numbers, across three projects.

  • 20×

    Lower infrastructure cost

    Legacy services moved from MuleSoft to AWS.

  • 10×

    Traffic surges handled, zero downtime

    Event-driven processing absorbed the spikes.

  • −66%

    API response time

    A Redis cache sped up the API, and MongoDB tuning cut database execution time by 20%.

  • −80%

    Mean time to recovery

    Sentry error tracking and observability.

  • 3 mo

    From start to a serverless booking MVP

    On schedule for the client launch, with environment setup cut from days to minutes using IaC.

Projects

Three client projects, Jun 2025 to now, with the stack used on each.

  • Insurance company

    Express.js, PostgreSQL, MongoDB, Redis, RabbitMQ, Kafka, Docker, AWS, ELK, Dynatrace, Claude Code

    • Migrated legacy services from MuleSoft to AWS, cutting infrastructure costs 20x.
    • Implemented event-driven processing that handled 10x traffic surges with zero downtime.

  • Education platform

    Nest.js, MongoDB, Redis, BullMQ, Docker, AWS, Sentry, Claude Code

    • Cut API response time by 66% (Redis cache) and DB execution time by 20% (MongoDB tuning).
    • Added Sentry error tracking and observability, reducing MTTR by 80%.

  • Travel agency

    Node.js, AWS (SQS, Lambda, DynamoDB, Cognito, S3, SNS, SES, EventBridge), GitHub Copilot

    • Delivered a serverless booking MVP in 3 months, on schedule for the client launch.
    • Cut environment setup time from days to minutes by codifying the infrastructure with IaC.

Stack

The tools I work with.

  • Languages and frameworks

    JavaScript, TypeScript, Python, Express.js, Fastify.js, Nest.js, React.js, Next.js

  • Databases and messaging

    PostgreSQL, TypeORM, Prisma, Drizzle ORM, MongoDB, Redis, DynamoDB, RabbitMQ, Kafka

  • Infrastructure and DevOps

    AWS, Terraform, Docker, ArgoCD, GitHub Actions, Sentry, ELK, Dynatrace

  • AI and LLM

    Claude Code, GitHub Copilot, LLM APIs, MCP, RAG, pgvector

Award

UA SKILLS Tournament #2, Aug 2026.

Meeting Room Booking

Prize winner

Made double bookings impossible at the database level with a PostgreSQL EXCLUDE constraint. Conflicts return a 409.

Built a 5-stage DevSecOps CI/CD pipeline:

  1. gitleaks
  2. Snyk
  3. CodeQL
  4. SonarQube
  5. Playwright E2E

Built with Next.js, NestJS (Fastify), PostgreSQL, Docker, Prometheus, Grafana and ELK.

Education

Degree and years.

Kharkiv National University of Radio Electronics

BS, Computer Science. Sep 2023 to Jun 2027.

Languages

What I work and communicate in.

  • English

    B2 Upper-Intermediate

  • Ukrainian

    Native

  • Russian

    Native

Contact

Open to new projects.

Got a system that costs too much or breaks too often?