Devox Software

Note: Please apply for this position only if you have proven experience working with crypto, blockchain, or wallet development.

The client is an innovative global fintech leader behind USDT, the world’s largest and most widely used stablecoin.

We are looking for a Middleware Engineer to work across the JavaScript/TypeScript layer, connecting modern applications with local AI inference engines and distributed systems. This role sits between product development and platform engineering, focusing on middleware, SDKs, and application layers that make local AI usable, secure, and scalable.

Responsibilities:

• Design, build, and maintain React-based applications (Expo / React Native / Electron)
• Develop clean, modular architectures using TypeScript across the stack
• Implement local-first / offline-first application logic and secure local data storage
• Integrate applications with local AI inference engines, SDKs, and real-time systems
• Work with REST APIs, WebSockets, RPC, and streaming data flows
• Contribute to middleware, SDKs, and JavaScript bindings bridging apps with native and C++ components
• Build or extend native mobile modules (iOS / Android) when required
• Optimize performance for resource-constrained devices
• Write production-quality code with unit and end-to-end tests
• Collaborate in a fully remote, cross-time-zone team

Requirements:
Must have

• 5+ years of experience in fullstack software development
• Expert-level proficiency in JavaScript and TypeScript
• Strong experience with React (web, mobile, or desktop)
• Experience building offline-first or local-storage-heavy applications (e.g. SQLite)
• Proven experience with distributed systems or event-driven architectures
• Strong understanding of real-time communication (WebSockets, streaming, RPC)
• Solid knowledge of networking, security, and production best practices
• Experience with databases, data modeling, and performance optimization
• Hands-on experience with containerization and orchestration (Docker, Kubernetes)
• Ability to work independently and communicate effectively in a remote environment

Nice to Have

• Experience with peer-to-peer technologies (libp2p, Hyperswarm, WebRTC)
• Familiarity with AI/ML inference APIs or OpenAI-compatible endpoints
• Experience integrating crypto or payment SDKs
• Background in AI platforms, SaaS, or developer tooling
• Knowledge of GPU resource management, ML infrastructure, or WebAssembly
• Contributions to open-source projects

We are offering:

• Transparent strategy and thoughtful management that keep everyone aligned
• Space for personal growth and career development without limits
• A culture of continuous learning: internal courses, workshops, and English classes twice a week
• Skill up events where we share experience and stay on top of trends
• Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
• Team spirit that thrives through regular events, gatherings, and celebrations

Note: Please apply for this position only if you have proven experience working with crypto, blockchain, or wallet development.

The client is an innovative global fintech leader behind USDT, the world’s largest and most widely used stablecoin.

We are looking for a Middleware Engineer to work across the JavaScript/TypeScript layer, connecting modern applications with local AI inference engines and distributed systems. This role sits between product development and platform engineering, focusing on middleware, SDKs, and application layers that make local AI usable, secure, and scalable.

Responsibilities:

• Design, build, and maintain React-based applications (Expo / React Native / Electron)
• Develop clean, modular architectures using TypeScript across the stack
• Implement local-first / offline-first application logic and secure local data storage
• Integrate applications with local AI inference engines, SDKs, and real-time systems
• Work with REST APIs, WebSockets, RPC, and streaming data flows
• Contribute to middleware, SDKs, and JavaScript bindings bridging apps with native and C++ components
• Build or extend native mobile modules (iOS / Android) when required
• Optimize performance for resource-constrained devices
• Write production-quality code with unit and end-to-end tests
• Collaborate in a fully remote, cross-time-zone team

Requirements:Must have

• 5+ years of experience in fullstack software development
• Expert-level proficiency in JavaScript and TypeScript
• Strong experience with React (web, mobile, or desktop)
• Experience building offline-first or local-storage-heavy applications (e.g. SQLite)
• Proven experience with distributed systems or event-driven architectures
• Strong understanding of real-time communication (WebSockets, streaming, RPC)
• Solid knowledge of networking, security, and production best practices
• Experience with databases, data modeling, and performance optimization
• Hands-on experience with containerization and orchestration (Docker, Kubernetes)
• Ability to work independently and communicate effectively in a remote environment

Nice to Have

• Experience with peer-to-peer technologies (libp2p, Hyperswarm, WebRTC)
• Familiarity with AI/ML inference APIs or OpenAI-compatible endpoints
• Experience integrating crypto or payment SDKs
• Background in AI platforms, SaaS, or developer tooling
• Knowledge of GPU resource management, ML infrastructure, or WebAssembly
• Contributions to open-source projects

We are offering:

• Transparent strategy and thoughtful management that keep everyone aligned
• Space for personal growth and career development without limits
• A culture of continuous learning: internal courses, workshops, and English classes twice a week
• Skill up events where we share experience and stay on top of trends
• Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
• Team spirit that thrives through regular events, gatherings, and celebrations

We are looking for Functional Data Analysts (SAP MM) to support the Materials Management domain within an SAP S/4HANA programme. The role focuses on analysing, mapping, validating, and supporting the migration of MM-related data to ensure accurate and reliable procurement, inventory, and warehouse processes.

Key Responsibilities

• Analyse SAP MM data objects, including materials, suppliers, and inventory records
• Support data mapping, transformation, and validation activities
• Collaborate with the MM Business Process & Data Lead and the Data Migration team
• Support UAT, data loads, and cutover preparation activities
• Assist in identifying and resolving data quality issues

Requirements

• Experience with SAP MM in a functional or data-focused role
• Good understanding of procurement and/or inventory management processes
• Hands-on experience with data analysis and validation
• Ability to work effectively within cross-functional project teams
• Fluent English and Polish

We are offering:

• Transparent strategy and thoughtful management that keep everyone aligned
• Space for personal growth and career development without limits
• A culture of continuous learning: internal courses, workshops, and English classes twice a week
• Skill up events where we share experience and stay on top of trends
• Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
• Team spirit that thrives through regular events, gatherings, and celebrations

We are looking for a Functional Data Analyst (SAP PM) to support the Plant Maintenance workstream within an SAP S/4HANA programme. The role focuses on data analysis, mapping, validation, and migration to ensure high-quality and accurate PM data during the transition to S/4.

Key Responsibilities

• Analyse SAP PM data objects, including equipment, maintenance plans, and work orders
• Map legacy data to SAP S/4HANA structures and support the definition of transformation rules
• Support data validation activities and assist in defect identification and resolution
• Collaborate closely with the PM Process Lead and Data Migration team
• Support testing phases and cutover preparation activities

Requirements

• Proven experience working with SAP PM data objects
• Strong analytical skills with hands-on experience in data handling and validation
• Understanding of data migration processes within SAP programmes
• Ability to work collaboratively in cross-functional project teams
• Fluent English and Polish

We are offering:

• Transparent strategy and thoughtful management that keep everyone aligned
• Space for personal growth and career development without limits
• A culture of continuous learning: internal courses, workshops, and English classes twice a week
• Skill up events where we share experience and stay on top of trends
• Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
• Team spirit that thrives through regular events, gatherings, and celebrations

We are seeking a Functional Data Analyst (SAP Business Partner) to support the Business Partner data domain within an SAP S/4HANA programme. The role focuses on analysing, mapping, cleansing, and validating BP master data to ensure a smooth and accurate transition from legacy systems to S/4.

Key Responsibilities

• Analyse and map Business Partner data (Customer, Vendor, Partner) from legacy systems to SAP S/4HANA
• Support the design of BP roles, attributes, relationships, and segmentation in line with business requirements
• Coordinate data cleansing and data quality activities
• Collaborate with functional teams during testing and data validation phases
• Support data migration activities and cutover preparation

Requirements

• Strong knowledge of SAP Business Partner within S/4HANA
• Experience working with Customer and Vendor master data
• Hands-on experience in data analysis, mapping, and validation
• Ability to work effectively in cross-functional project teams
• Fluent English and Polish

We are offering:

• Transparent strategy and thoughtful management that keep everyone aligned
• Space for personal growth and career development without limits
• A culture of continuous learning: internal courses, workshops, and English classes twice a week
• Skill up events where we share experience and stay on top of trends
• Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
• Team spirit that thrives through regular events, gatherings, and celebrations

The client is an innovative global fintech leader behind USDT, the world’s largest and most widely used stablecoin.

We are looking for a Middleware Engineer to work across the JavaScript/TypeScript layer, connecting modern applications with local AI inference engines and distributed systems. This role sits between product development and platform engineering, focusing on middleware, SDKs, and application layers that make local AI usable, secure, and scalable.

Responsibilities:

• Design, build, and maintain React-based applications (Expo / React Native / Electron)
• Develop clean, modular architectures using TypeScript across the stack
• Implement local-first / offline-first application logic and secure local data storage
• Integrate applications with local AI inference engines, SDKs, and real-time systems
• Work with REST APIs, WebSockets, RPC, and streaming data flows
• Contribute to middleware, SDKs, and JavaScript bindings bridging apps with native and C++ components
• Build or extend native mobile modules (iOS / Android) when required
• Optimize performance for resource-constrained devices
• Write production-quality code with unit and end-to-end tests
• Collaborate in a fully remote, cross-time-zone team

Requirements:
Must have

• 5+ years of experience in fullstack software development
• Expert-level proficiency in JavaScript and TypeScript
• Strong experience with React (web, mobile, or desktop)
• Experience building offline-first or local-storage-heavy applications (e.g. SQLite)
• Proven experience with distributed systems or event-driven architectures
• Strong understanding of real-time communication (WebSockets, streaming, RPC)
• Solid knowledge of networking, security, and production best practices
• Experience with databases, data modeling, and performance optimization
• Hands-on experience with containerization and orchestration (Docker, Kubernetes)
• Ability to work independently and communicate effectively in a remote environment

Nice to Have

• Experience with peer-to-peer technologies (libp2p, Hyperswarm, WebRTC)
• Familiarity with AI/ML inference APIs or OpenAI-compatible endpoints
• Experience integrating crypto or payment SDKs
• Background in AI platforms, SaaS, or developer tooling
• Knowledge of GPU resource management, ML infrastructure, or WebAssembly
• Contributions to open-source projects

We are offering:

• Transparent strategy and thoughtful management that keep everyone aligned
• Space for personal growth and career development without limits
• A culture of continuous learning: internal courses, workshops, and English classes twice a week
• Skill up events where we share experience and stay on top of trends
• Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
• Team spirit that thrives through regular events, gatherings, and celebrations

Note: Please apply for this position only if you have proven experience working with crypto, blockchain, or wallet development.

The client is an innovative global fintech leader behind USDT, the world’s largest and most widely used stablecoin.

We are looking for a React Native Developer with solid experience in blockchain/crypto/ wallets to help us build secure applications.

Responsibilities

• Design, develop and maintain mobile applications using React Native (iOS & Android)
• Integrate applications with Bitcoin / Web3 / blockchain APIs and wallet backends
• Work with wallet functionality: addresses, balances, transactions, seed phrases, private keys (never exposing them insecurely)
• Implement mobile security best practices: secure storage, encryption, device integrity checks, protection from common attack vectors
• Collaborate with backend, security, and product teams to design features for decentralized and crypto-enabled products
• Participate in code reviews, architecture discussions, and technical decisions
• Write clean, testable, well-documented code

Requirements

• 4+ years of experience in in React Native
• Strong knowledge of TypeScript / JavaScript and the React ecosystem
• Proven experience with blockchain / crypto / wallet applications
• Experience working with Bitcoin, Web3, wallets, private keys, or similar technologies
• Good understanding of mobile security: secure storage, key management, encryption, secure communication
• Understanding of decentralized systems and concepts like public/private keys, transactions, addresses, signing, gas/fees, etc.
• Experience integrating REST/WebSocket APIs and working with real-time data
• Comfortable working in a remote, distributed team, communicating in English (spoken and written)

Nice to have

• Experience with hardware wallets or secure elements
• Knowledge of Layer 2 solutions, sidechains, or Lightning Network
• Experience with performance optimization and profiling for mobile apps
• Background in cryptography or security engineering