Senior Backend Engineer

3Commas.io

Estonia · Full-time · Mid-Senior

We are seeking an adept backend developer proficient in Ruby on Rails, PostgreSQL, and AWS technologies. Expertise in fin-tech, trading, or cryptocurrencies is highly desirable. Our tech stack includes Go, Ruby, Rails, Sidekiq, Redis, Kubernetes, PostgreSQL, Clickhouse, DynamoDB, and various AWS services.

Requirements

5+ years of experience in Ruby on Rails development
Strong understanding of PostgreSQL
Familiarity with AWS serverless services (Lambda, DynamoDB)
Experience with at least one key-value store (Redis/Memcached/etc.)
Adherence to best practices, including test-driven development, continuous integration, refactoring, and code standards
Ability to design robust, scalable, and secure features
Excellent communication skills (both online and in-person)
Proficiency in English at B2 level or higher
Integration experience with external API services

Responsibilities

Develop modular and scalable codebase
Implement new trading algorithms and features
Address high-load and security-related challenges
Ensure code quality and performance

Would Be a Plus

Knowledge of Kubernetes
Basic knowledge of Go and a desire to further develop skills in it

We Offer

Work from our offices in Tallinn and Nicosia or fully remote.
Inspiring leadership and knowledgeable, creative, genuinely kind colleagues
Paid annual leave, paid sick leave
Competitive salary offers based on your skills
In-house lessons for your crypto-trading skills

Key Skills

Ranked by relevance

ruby aws ruby on rails postgresql continuous integration kubernetes serverless dynamodb redis

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