Principal Engineer – Systems Architecture & Scalability at Xsolla

Serbia

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Not SpecifiedCompensation

Senior (5 to 8 years), Expert & Leadership (9+ years)Experience Level

Full TimeJob Type

UnknownVisa

Video Game Commerce, Gaming, FintechIndustries

Requirements

Experience transitioning monolithic enterprise systems to microservices or service mesh architectures
Familiarity with domain-driven design (DDD), CQRS, and event sourcing principles
Prior work in multi-product platforms where shared infrastructure and modular boundaries are key
Knowledge of data federation, API gateway patterns, and global scaling strategies
Background in technical leadership for distributed or hybrid engineering organizations

Responsibilities

Lead large-scale architectural refactoring initiatives — breaking down complex monoliths into modular, decoupled services with clear ownership boundaries and well-defined APIs
Define and evolve system architecture principles that support scalability, high availability, and ease of deployment across multi-region environments
Design strategies for multi-tenancy, data isolation, and schema evolution to support Xsolla’s growing portfolio of products and clients
Provide technical leadership across multiple teams — advising on system decomposition, domain-driven design, and dependency management
Establish and guide database architecture strategy, including data partitioning, replication, caching, and observability practices for large-scale distributed systems
Collaborate with platform, infrastructure, and DevOps teams to ensure systems are cloud-native, fault-tolerant, and horizontally scalable
Act as a trusted architectural advisor for engineering leadership, helping prioritize modernization efforts and technical debt reduction initiatives
Conduct architecture reviews, ensuring that performance, maintainability, and scalability are baked into every stage of the software lifecycle
Mentor senior engineers and architects, fostering a culture of design excellence and long-term technical vision

Skills

Key technologies and capabilities for this role

Systems ArchitectureScalabilityMicroservicesAPIsDomain-Driven DesignMulti-TenancyData PartitioningReplicationCachingObservabilityCloud-NativeDistributed SystemsDatabase ArchitectureHigh AvailabilityTechnical Leadership

Questions & Answers

Common questions about this position

What is the salary or compensation for this Principal Engineer role?

This information is not specified in the job description.

Is this Principal Engineer position remote or does it require office work?

This information is not specified in the job description.

What key skills and experience are required for this role?

Candidates need experience transitioning monolithic systems to microservices, familiarity with domain-driven design (DDD), CQRS, and event sourcing, knowledge of data federation, API gateway patterns, global scaling strategies, and background in technical leadership for distributed teams.

What is the company culture like at Xsolla?

Xsolla fosters a culture that values technical mastery, autonomy, design excellence, and long-term technical vision, with collaboration among world-class engineers across continents.

What makes a strong candidate for this Principal Engineer position?

A strong candidate has proven experience untangling complex legacy systems into modular services, expertise in scalable architectures for multi-region environments, and the ability to provide technical leadership and mentor teams.

Xsolla

Integrated payment solutions for video games

About Xsolla

Xsolla provides integrated payment solutions and tools specifically designed for video game publishers and developers. Their services include payment processing, fraud detection, and gamified experiences, which help clients monetize their games and engage players effectively. Xsolla operates in over 200 countries, supports more than 130 currencies, and offers services in over 20 languages, making it accessible to a wide range of clients from indie developers to large publishers. Unlike many competitors, Xsolla focuses exclusively on the video game industry, allowing them to tailor their offerings to meet the unique needs of game developers. The company's goal is to enhance the gaming experience for players while providing developers with the tools they need to succeed.

Los Angeles, CaliforniaHeadquarters

2005Year Founded

$73MTotal Funding

DEBT_PPCompany Stage

Fintech, Entertainment, GamingIndustries

501-1,000Employees

Benefits

Health Insurance

Dental Insurance

Vision Insurance

Unlimited Paid Time Off

Professional Development Budget

Risks

Web3 expansion with Xsolla ZK may face regulatory challenges in strict regions.

MENA market entry with iBLOXX could encounter geopolitical and market barriers.

Technical integration of 'Pay with Points' may struggle with user adoption issues.

Differentiation

Xsolla offers a comprehensive suite of tools for game monetization and distribution.

The company supports over 130 currencies and 20 languages, enhancing global reach.

Xsolla's partnerships with major gaming entities like Valve and Ubisoft boost credibility.

Upsides

Xsolla's launch of Xsolla ZK taps into the growing Web3 gaming market.

The Mastercard partnership introduces innovative payment solutions like 'Pay with Points'.

Collaboration with iBLOXX expands Xsolla's presence in the MENA gaming ecosystem.

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