RemoteLeaf Logo
Log in Sign up

Middle Node.js Backend Developer

1 week, 1 day ago
Ukraine
Full-time
Mid Level
Backend Engineer
Software Development
AWS CRM DDD GCP Kafka Microservices MongoDB Node.js PostgreSQL RabbitMQ Redis REST API Socket.io Solid.js TypeScript WebSockets
Apply Now
United Tech

United Tech

United Tech specializes in developing global social networking and streaming products, creating an environment that fosters professional growth and development for specialists while supporting initiatives such as aiding the people of Ukraine.

Internet Software & Services
51-250
Founded 2016
View All Jobs 36

Description

  • Develop and ship web billing integrations, including payment providers, subscriptions, recurring billing, webhook handling, retries, idempotency, and reconciliation.
  • Develop and ship marketing integrations, including attribution platforms, server-side conversion and events APIs, and analytics and CRM/ESP pipelines.
  • Create technical designs for product epics and break them down into actionable tasks.
  • Participate in team rituals such as grooming, sprint planning, and estimations.
  • Run technical investigations and research, including third-party API limits, provider selection, and edge cases.
  • Address technical debt and improve the reliability and observability of integrations.
  • Participate in the full software development lifecycle, including design, development, code review, testing, release, and support.

Requirements

  • 3+ years of commercial backend development experience.
  • 2.5+ years of experience with Node.js and TypeScript.
  • Solid experience with relational and non-relational databases, including PostgreSQL, MongoDB, and Redis.
  • Experience with SOA or microservices, including inter-service communication and development processes.
  • Strong understanding of design principles and patterns such as SOLID and event-driven architecture.
  • Experience integrating third-party REST APIs, including authentication, rate limits, retries, webhooks, and idempotency.
  • Experience with asynchronous processing or message queues such as BullMQ, RabbitMQ, or Kafka.
  • Experience working with a cloud provider such as AWS or GCP.
  • Understanding of scaling and high-load systems.
  • Daily use of AI coding assistants such as Claude Code, Cursor, or GitHub Copilot for development, refactoring, tests, and documentation.
  • Ability to write effective prompts and review and validate AI-generated code while maintaining quality and security ownership.
  • Upper-Intermediate English or higher.
  • Hands-on experience with web billing or payment integrations such as Stripe, Paddle, Solidgate, Recurly, Braintree, or PayPal is a plus.
  • Payments domain knowledge, including 3DS, PCI-DSS basics, chargebacks or fraud, dunning, and reconciliation, is a plus.
  • Experience with marketing or growth integrations such as AppsFlyer, Adjust, Meta CAPI, Google or TikTok events APIs, or S2S postbacks is a plus.
  • Experience with analytics or event pipelines and CRM or ESP tools is a plus.
  • Experience with DDD, CQRS, or WebSockets such as ws or socket.io is a plus.
  • Understanding of how to integrate LLM APIs into product features is a plus.

Benefits

  • 20 paid vacation days, 15 sick days, and 6 additional days off for family events.
  • Up to 10 additional days off for public holidays.
  • 100% medical insurance coverage.
  • Sports and equipment reimbursement.
  • Team building events, corporate gifts, and branded merch.
  • Financial and legal support.
  • Maternity recovery support allowance.
  • Position retention and support for employees who join the Armed Forces of Ukraine.
  • Work from the Kyiv hub or remotely with a flexible schedule.
  • Modern equipment or depreciation of your own tools.
  • Performance-oriented reviews and Individual Development Plans (IDPs).
  • Reimbursement for professional courses and English classes.
  • Corporate library, book club, and knowledge-sharing events.

Interested in this position?

Apply directly on the company website

Apply Now

Similar Roles

Fingerprint

Senior Backend Engineer, Core APIs

Fingerprint 51-250 IT Services

Fingerprint is hiring a Senior Backend Engineer for its Core APIs team to build scalable fraud-detection backend systems and real-time data infrastructure for a globally distributed, remote-first company.

Anywhere Full-time Senior Backend Engineer
$150k-$200k
CI/CD ClickHouse Databricks Datadog dbt Docker DynamoDB Elasticsearch Express.js GCP Git Go Kubernetes Microservices Node.js Redis Shell Scripting Snowflake SQL Terraform TypeScript
12 hours, 40 minutes ago
Mindrift.ai: Be the “I” in AI

Freelance Chatbot Developer (WhatsApp / Telegram / Discord)

Mindrift.ai: Be the “I” in AI Internet Software & Services

Mindrift is hiring a freelance, part-time remote Bot Developer for the Tendem project to build and refine messaging-platform bots in a hybrid AI + human workflow for real-user use cases.

Philippines Malaysia South Africa Indonesia Part-time Mid Level Backend Engineer
Up to $73k
Docker Node.js OAuth Python REST API Serverless
12 hours, 55 minutes ago
Mindrift.ai: Be the “I” in AI

Senior Python Data Scraping Engineer (Freelance)

Mindrift.ai: Be the “I” in AI Internet Software & Services

Mindrift is hiring a Senior Python Data Scraping Engineer for the Tendem freelance project to manage end-to-end web data extraction and deliver accurate structured datasets within a hybrid AI + human workflow.

India Part-time Senior Backend Engineer
$62k-$62k
AJAX AWS Docker GitHub JavaScript JSON LLM Python Selenium
12 hours, 55 minutes ago
Mindrift.ai: Be the “I” in AI

Freelance Data Scraping Engineer (Python)

Mindrift.ai: Be the “I” in AI Internet Software & Services

Mindrift is hiring a freelance Python Data Scraping Engineer for the Tendem project to support hybrid AI + human data extraction work on complex web sources.

Singapore South Korea Vietnam New Zealand Japan Malaysia Part-time Mid Level Backend Engineer
AJAX GitHub JavaScript JSON LLM Python Selenium
12 hours, 55 minutes ago

You're on a roll! Sign up now to keep applying.

Sign Up

Already have an account? Log in

Used by 14,729+ remote workers