Take hands-on ownership of an existing payments backend and drive it through integration, testing, and production deployment for a global digital platform for football fans.
Compensation
Once funding is secured, the arrangement is intended to transition to a competitive, normalized salary, together with equity and OleX token ownership.
Responsibilities
Take ownership of the existing payments backend, understand its architecture and codebase, and complete integration, testing, and production deployment.
Complete and optimize payment processing, settlement, reconciliation, and balance-accounting functionality.
Develop and maintain reliable financial ledger systems, ensuring transaction consistency, auditability, idempotency, and accurate double-entry accounting.
Integrate and manage digital wallets and cryptocurrency payment flows, including deposits, withdrawals, transfers, transaction signing, and secure key management.
Implement and maintain institutional custody integrations, particularly Fireblocks or comparable platforms, covering wallet administration, custody APIs, transaction authorization, and security policies.
Design, develop, deploy, and maintain robust backend services using PHP and Go, ensuring scalability, reliability, and high performance, focusing on integrations with major Online Travel Agencies (OTAs).
Compensation
Competitive Compensation: Market-aligned salary based on the applicant's country of residence.
Responsibilities
Design, develop, deploy, and maintain robust backend services using PHP and Go
Lead the extraction of services from an existing monolithic architecture
Collaborate closely with Product Managers and cross-functional stakeholders to shape technical priorities
Design and implement high-quality APIs that enable AI agents and automated workflows
Optimize application performance, including page speed, response times, latency, and overall system reliability
Develop and maintain critical integrations with major Online Travel Agencies (OTAs), evolving a monolithic architecture toward scalable, service-oriented systems, and enabling backend capabilities for AI agents.
Compensation
Competitive Compensation: Market-aligned salary based on the applicant's country of residence.
Responsibilities
Design, develop, deploy, and maintain robust backend services using PHP and Go
Lead the extraction of services from an existing monolithic architecture
Collaborate closely with Product Managers and cross-functional stakeholders to shape technical priorities
Design and implement high-quality APIs that enable AI agents and automated workflows
Optimize application performance, including page speed, response times, latency, and overall system reliability
Join a fast-growing technology environment and help build and scale the backend infrastructure powering a leading vacation rental management platform used by property managers worldwide. In this role, you will join the Core Engineering team, responsible for developing and maintaining critical integrations with major Online Travel Agencies (OTAs).
Compensation
Competitive Compensation: Market-aligned salary based on the applicant's country of residence.
Responsibilities
Design, develop, deploy, and maintain robust backend services using PHP and Go, ensuring scalability, reliability, and high performance.
Lead the extraction of services from an existing monolithic architecture by defining clear service boundaries, ownership models, and pragmatic migration strategies.
Collaborate closely with Product Managers and cross-functional stakeholders to shape technical priorities and ensure backend solutions deliver meaningful business value.
Design and implement high-quality APIs that enable AI agents and automated workflows to interact reliably with guest-facing product capabilities.
Optimize application performance, including page speed, response times, latency, and overall system reliability, working closely with frontend engineering teams.
Help develop and strengthen the backend infrastructure of an inclusive, mobile-first digital platform, taking ownership of complex technical challenges, investigating and resolving backend issues while improving system performance, scalability, and reliability.
Responsibilities
Design, develop, and deploy scalable, resilient backend services using cloud-first architectures, NoSQL databases, and event-driven technologies.
Investigate complex backend issues, lead technical troubleshooting, identify root causes, and define clear paths toward resolution.
Optimize system performance, reliability, availability, and data integrity as the platform scales.
Build and maintain well-structured, self-documented APIs using NestJS, GraphQL, and REST.
Develop and maintain real-time application features using WebSockets.
Help develop and strengthen the backend infrastructure of an inclusive, mobile-first digital platform, taking ownership of complex technical challenges while improving system performance, scalability, and reliability.
Responsibilities
Design, develop, and deploy scalable, resilient backend services using cloud-first architectures, NoSQL databases, and event-driven technologies.
Investigate complex backend issues, lead technical troubleshooting, identify root causes, and define clear paths toward resolution.
Optimize system performance, reliability, availability, and data integrity as the platform scales.
Build and maintain well-structured, self-documented APIs using NestJS, GraphQL, and REST.
Develop and maintain real-time application features using WebSockets.
Design, develop, deploy, and maintain robust backend services using PHP and Go, ensuring scalability, reliability, and high performance, focusing on integrations with major Online Travel Agencies (OTAs) and evolving monolithic architecture to service-oriented systems.
Compensation
Competitive Compensation: Market-aligned salary based on the applicant's country of residence.
Responsibilities
Design, develop, deploy, and maintain robust backend services using PHP and Go
Lead the extraction of services from an existing monolithic architecture
Collaborate closely with Product Managers and cross-functional stakeholders
Design and implement high-quality APIs that enable AI agents and automated workflows
Optimize application performance, including page speed, response times, latency, and overall system reliability
Establish and lead an enterprise-wide service virtualization capability, shaping strategy, architecture, and implementation of reusable virtual services across complex API and integration ecosystems.
Responsibilities
Define the service virtualization roadmap, technical standards, governance framework, and operating model
Establish asset management practices and maintain a reusable catalogue of virtual services
Drive adoption across Quality Engineering, Architecture, Integration, and Delivery teams
Design, implement, and maintain virtual services for REST APIs, SOAP services, GraphQL APIs, Kafka and other event-driven integrations, MQ/JMS messaging, and file-based integrations such as SFTP/APST
Build configurable, reusable, and stateful virtual services that support both positive and negative testing scenarios
Design, develop, and maintain critical wallet infrastructure supporting fiat and cryptocurrency wallet operations, taking ownership of the Wallets subdomain.
Compensation
Competitive compensation: Salary packages tailored to experience, technical expertise, and relevant professional certifications.
Responsibilities
Design, implement, and evolve services responsible for the complete wallet lifecycle (creation, activation, blocking, unblocking, suspension, and termination) across fiat and cryptocurrency wallets
Collaborate with engineering teams across Digital Assets, Fiat, Onboarding, Billing, and other business domains
Build reliable, horizontally scalable services using established hexagonal architecture patterns
Take responsibility for the design, implementation, and evolution of wallet-related services
Participate in on-call rotations, production monitoring, and incident response activities
Design, develop, and maintain critical wallet infrastructure supporting fiat and cryptocurrency wallet operations, taking ownership of the Wallets subdomain.
Compensation
Competitive compensation: Salary packages tailored to experience, technical expertise, and relevant professional certifications.
Responsibilities
Design, implement, and evolve services responsible for the complete wallet lifecycle (creation, activation, blocking, unblocking, suspension, and termination) across fiat and cryptocurrency wallets
Collaborate with engineering teams across Digital Assets, Fiat, Onboarding, Billing, and other business domains
Build reliable, horizontally scalable services using established hexagonal architecture patterns
Take responsibility for the design, implementation, and evolution of wallet-related services
Participate in on-call rotations, production monitoring, and incident response activities
