Senior Software Engineer (Ruby)

United States Digital Space LLC; Poland; Hybrid; PLN 150,000 - 190,000; Full time

Benefits offered by this job

In-office, hybrid, or remote flexiblе

Medical healthcare

Recognition program

Ongoing learning & reimbursement

Well-being program

Team events & local benefits

Sports compensation

Referral bonuses

Top-tier equipment provision

International projects

Job summary

United States Digital Space LLC in Poland is seeking an experienced Ruby developer to join a globally oriented tech team working on a taxi ordering platform and related services. You will contribute to autoscaling, automation, and the overall reliability of our applications.

You will collaborate across teams to optimize performance, implement containerized solutions with Kubernetes and Docker on AWS, and enhance CI/CD pipelines while focusing on scalable infrastructure and database tuning.

Qualifications

• Proven Ruby development experience with solid software coding background.
• Practical experience with Kubernetes and Docker for container orchestration.
• Hands-on AWS cloud infrastructure experience.
• Experience with database optimization and performance tuning.
• CI/CD automation experience and infrastructure processes.

Responsibilities

• Hands-on Development & Automation: Write real code for autoscaling, internal tooling, and operational automation
• Application Performance & Reliability: Improve the overall performance, scalability, and reliability of our applications
• Database & Infrastructure Optimization: Work directly on database optimization, containerized environments, and continuous delivery
• CI Automation: Enhance automated CI processes and development pipelines
• AWS & Container Management: Maintain, optimize, and manage applications across our Docker, Kubernetes, and AWS stack

Skills

Ruby development

CI/CD automation

Performance & reliability mindset

Team collaboration

Tools

Kubernetes

Docker

AWS

Job description

Why Join the company

We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.

From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next.What powers it all? Our people are ambitious, collaborative, and constantly evolving.

About the Client

The company has been building solutions for mobile apps, effortless payment, business travel, and advertising since 1992. The customer is developing a mobility platform that allows operators to manage their vehicles and drivers efficiently, regulators to be informed and establish guidelines, service providers to deliver sustainable solutions, and riders to have an effortless transit experience.

Project Team

The project is a taxi ordering service. The user can hail a taxi, monitor an ordered taxi, pay for a ride, and see trip history. The system contains the following components:

• Ride server (all data processing);
• Payment server (PCI DSS-compliant), which performs a transaction with the passenger's digital wallet and payment gateways;
• Mobile application (hail taxi, geocoding, map, payments);
• Taxi terminal (3rd party).

The project integrates with 3rd party services, including PayPal, MasterPass, Stripe, and Twilio.

What You’ll Do

• Hands-on Development & Automation: Write real code for autoscaling, internal tooling, and operational automation
• Application Performance & Reliability: Improve the overall performance, scalability, and reliability of our applications
• Database & Infrastructure Optimization: Work directly on database optimization, containerized environments, and continuous delivery
• CI Automation: Enhance automated CI processes and development pipelines
• AWS & Container Management: Maintain, optimize, and manage applications across our Docker, Kubernetes, and AWS stack

What You Bring

• Strong Ruby Development Skills: Experienced Ruby developer with a solid background in software development
• Containers & Orchestration: Strong, practical experience with Kubernetes and Docker
• Cloud Infrastructure: Hands-on experience working with the AWS stack
• Database Expertise: Proven experience with database optimization
• CI/CD Automation: Experience with CI automation and infrastructure processes
• Mindset: Enjoys working on performance, reliability, and infrastructure, rather than building standard product features

English level

Upper-Intermediate

Legal & Hiring Information

• the company is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more.
• Reasonable accommodations are available to enable individuals with disabilities to perform essential functions.
• Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs.
• Compensation details are shared with candidates at the early stage of the recruitment process.
• The offer is not binding until a signed contract is in place.

Your Benefits at the company

the company benefits vary by location and contract type. Your recruiter will fill you in on the details.

• International projects
• In-office, hybrid, or remote flexibility
• Medical healthcare
• Recognition program
• Ongoing learning & reimbursement
• Well-being program
• Team events & local benefits
• Sports compensation
• Referral bonuses
• Top-tier equipment provision

the company Culture

We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.