Espeo Software

We are a technology company that started its journey in 2008. Our main headquarters is located in the picturesque city of Poznań, nestled by the beautiful Malta lake. For more than 17 years, we have been assisting companies in developing and implementing innovative fintech solutions. Leveraging our expertise in areas such as blockchain, online payments, and more, our clients can invent and develop cutting-edge solutions and services that keep them at the forefront of innovation. React.js Software Engineer SKILLS: React.js | JavaScript/TypeScript | Redux/Zustand | REST APIs | CI/CD | Testing B2B COOPERATION: 40-55 €/hour 💰 LOCATION: REMOTE IN FINLAND (occasional travels to Helsinki) START DATE: ASAP Key Services and Requirements: A Roadmap to Your Professional Success 🚀 Scope of services (applies to both Mid-Level & Senior): - Design, build, and maintain high-quality React.js applications within a component-driven architecture - Architect and enforce component libraries, state management patterns, and frontend standards across teams - Implement performant, accessible UIs that scale across multiple markets and localization requirements - Integrate with backend REST APIs and manage async data flows using established patterns - Ensure code quality, performance, accessibility, and comprehensive testing (unit, integration, end-to-end) - Collaborate with Product, Backend (Java), Design, Mobile (React Native), and DevOps teams across European markets - Participate in architectural discussions, technical design reviews, and contribute to platform-wide frontend standards - Take ownership of the reliability and operability of frontend applications, proactively reducing technical debt - Leverage AI-native development tools (Copilot, Cursor, Claude) to accelerate delivery and improve code quality - Support a “you build it, you run it” mindset for reliable delivery and smooth operations Here’s a set of skills we require: Middle Level - 3-5 years of professional software development experience - Solid experience with React.js (hooks, functional components) and modern JavaScript/TypeScript - Familiarity with state management (Redux, React Query, Context API, or similar) - Understanding of RESTful APIs and async data patterns Unit testing with Jest; integration testing is a plus - Basic knowledge of web accessibility and internationalisation - Experience collaborating with cross-functional teams and following existing frontend standards Senior Level - 6-8 years of professional software development experience - Deep expertise in React.js (hooks, context, concurrent features) and modern JavaScript/TypeScript - Strong experience with state management (Redux, Zustand, React Query, or similar) - Hands-on experience designing and maintaining component libraries and design systems - Solid understanding of frontend performance optimization (code splitting, lazy loading, bundle analysis) - Advanced knowledge of web accessibility standards (WCAG 2.1) and internationalisation (i18n) - Integration and end-to-end testing experience (Cypress, Playwright) - Experience mentoring mid-level engineers and driving frontend standards across teams - Familiarity with Docker, CI/CD pipelines (Vite, Webpack, GitHub Actions), and frontend observability (Sentry, metrics, logging) Nice to have: - Experience defining and scaling frontend standards across multiple teams or domains - Practical experience modernizing or refactoring legacy frontend systems - Active usage of AI-assisted development tools in daily workflow - Exposure to high-traffic, production-grade applications - Experience shaping engineering culture and mentoring at scale - Interest in or experience with React Native

We are a technology company that started its journey in 2008. Our main headquarters is located in the picturesque city of Poznań, nestled by the beautiful Malta lake. For more than 17 years, we have been assisting companies in developing and implementing innovative fintech solutions. Leveraging our expertise in areas such as blockchain, online payments, and more, our clients can invent and develop cutting-edge solutions and services that keep them at the forefront of innovation. Engineering Manager SKILLS: Java (17+) | Spring Boot | Microservices | CI/CD | API |Cloud |DevOps|Team Leadership B2B COOPERATION: 55-65 euro / hour💰 LOCATION: REMOTE IN FINLAND (occasional travels to Helsinki) START DATE: ASAP Key Services and Requirements: A Roadmap to Your Professional Success 🚀 Scope of services: - Lead and mentor a team of 6-10 backend engineers, promoting collaboration, motivation, and professional growth - Define and evolve backend platform architecture and engineering standards, ensuring scalability, reliability, and alignment across product squads - Drive technical execution of platform initiatives, ensuring quality, timeliness, and alignment with business objectives - Own the reliability, SLAs, API contracts, and documentation of platform services consumed across multiple teams - Remove blockers and create an environment for engineers to perform at their best - Collaborate with Product Owners, QA, DevOps, and Architects to implement future-proof platform decisions - Promote automation, CI/CD improvements, and adoption of modern engineering practices - Leverage AI-native tools (e.g., Copilot, Cursor, Claude) to accelerate delivery and improve code quality - Communicate progress, risks, and technical decisions to stakeholders and leadership Here’s a set of skills we require: - 5+ years hands-on software engineering experience in backend development (Java or JVM-based languages) - 3+ years experience leading backend or platform engineering teams - Strong technical foundation in Java, Spring Boot, microservices architecture, and API design - Solid experience with cloud infrastructure, CI/CD pipelines, and modern DevOps practices - Deep understanding of platform concerns: service reliability, observability, and API governance - Experience in fintech or payments domain is a plus - Proven ability to hire, mentor, and retain high-performing engineering talent - Hands-on experience in agile development environments - Bachelor’s degree in Computer Science, Software Engineering, or equivalent practical experience Nice to have: - Experience shaping engineering culture and mentoring teams at scale - Exposure to high-availability, high-traffic production environments - Experience modernizing or refactoring legacy systems - Active usage of AI-assisted development workflows

• Develop and maintain a React Native mobile application as part of a cross-functional product team • Take ownership of feature delivery - from implementation through testing to release • Write clean, maintainable, and well-structured code using TypeScript • Integrate and work with REST and GraphQL APIs, including proper handling of async data, loading states, and errors • Participate in code reviews and contribute to maintaining a high-quality, consistent codebase • Collaborate closely with Product Owners and Designers to clarify requirements and make sound technical decisions • Investigate and resolve issues across development and production environments • Gradually take ownership of specific technical areas and contribute to architectural improvements • Actively participate in agile processes (planning, refinement, reviews, retrospectives) and document technical decisions

• Define and drive the long-term backend architecture strategy across multiple teams, ensuring clarity, scalability, and alignment • Establish and evolve engineering standards, patterns, and best practices for Java Spring Boot development • Lead cross-team technical initiatives end-to-end, aligning stakeholders across engineering, product, and design • Act as a technical leader and mentor for senior and mid-level engineers through code reviews, design discussions, and hands-on guidance • Collaborate with Product, Frontend, Design, and DevOps leadership to shape the technical roadmap • Proactively identify and address systemic risks such as performance issues, scalability limits, and security gaps • Promote a culture of ownership, observability, and operational excellence • Evaluate and prototype new architectural approaches, influencing future tooling, service design, and engineering practices • Support continuous improvement of backend systems in terms of reliability, maintainability, and performance

• Develop and maintain a React Native mobile application as part of a cross-functional product team • Take ownership of feature delivery - from implementation through testing to release • Write clean, maintainable, and well-structured code using TypeScript • Integrate and work with REST and GraphQL APIs, including proper handling of async data, loading states, and errors • Participate in code reviews and contribute to maintaining a high-quality, consistent codebase • Collaborate closely with Product Owners and Designers to clarify requirements and make sound technical decisions • Investigate and resolve issues across development and production environments • Gradually take ownership of specific technical areas and contribute to architectural improvements • Actively participate in agile processes (planning, refinement, reviews, retrospectives) and document technical decisions

• Designing and developing a greenfield mobile application using React Native • Implementing full feature parity with the existing web platform • Establishing mobile architecture, patterns, and best practices for the codebase • Making independent architectural decisions (state management, navigation, offline support) • Integrating RESTful APIs and collaborating closely with backend teams • Optimizing mobile performance across iOS and Android • Building, maintaining, and improving CI/CD pipelines for mobile delivery • Supporting production builds and resolving issues when needed • Leveraging AI coding tools to accelerate development and maintain quality • Ensuring high code quality through reviews, testing, and clean architecture • Working in a fast-paced environment with quick ramp-up expectations • Maintaining transparent communication with stakeholders