Senior Backend Developer – IoT, Digital Identity

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wibitcs

WebsiteLinkedInAll Job Openings

1 - 10 employees

Founded 2020

💼 Consulting

📣 Marketing

🎯 Recruiter

Consulting • Marketing • Recruitment

wibitcs is a recruitment and consulting agency (Wibit Consulting & Services) specializing in IT and technology talent placement and global staffing solutions. Founded in 2020, it operates with a network of freelance recruiters and international partners to source candidates for employers across multiple locations, supporting remote, hybrid, and on-site roles. The company emphasizes collaboration, candidate experience, and workforce engagement via its careers portal and recruiting services.

📋 Description

• Develop back-end website applications • Integrate front-end elements with server-side logic • Implement core business logic • Design and implement data storage solutions • Apply data & security best practices — input validation, auth, secure storage, compliant logging • Optimize applications for speed and scalability • Design and develop APIs • Participate in scalable software architecture design • Maintain code integrity and organization • Write clean, functional backend code • Compile & analyse data to troubleshoot issues and improve performance • Perform unit/integration testing, debugging, and validation • Deliver solutions aligned with functional & non-functional requirements • Write technical documentation • Configure cloud services for backend functionality (serverless, storage, Kubernetes) • Implement authentication & authorization mechanisms • Maintain unit/integration tests within CI/CD pipelines • Manage project scope, schedule, budget, risks & stakeholders

🎯 Requirements

• 5+ years in software engineering (full-stack, backend, frontend, distributed systems) • 5+ years designing scalable, secure, maintainable cloud architectures • 5+ years delivering software in Agile/Scrum environments • 3+ years with Decentralised Identity (DID) & W3C Verifiable Credentials • 3+ years implementing OpenID4VCI and OpenID4VP • 3+ years with secure credential issuance, verification & digital wallet integration • 3+ years with cryptographic workflows, digital signatures & key management • 3+ years developing blockchain-based/distributed-ledger solutions • 3+ years performing code reviews & software engineering best practices • 3+ years with Digital Product Passport solutions • 10+ years backend programming (Go, C++) & server-side frameworks (Node.js) • 10+ years with APM tools (Dynatrace, Splunk, Elastic APM) + OpenTelemetry • 7+ years with relational (PostgreSQL, Oracle, MySQL) & NoSQL (MongoDB, CouchDB, CosmosDB) databases • 7+ years with version control workflows (GitFlow, trunk-based, SVN) • 7+ years designing/securing RESTful APIs (OpenAPI/Swagger) • 7+ years with containerisation & orchestration (Docker, Kubernetes) • 4+ years with OAuth 2.0, OpenID Connect, W3C VCDM, DIDs, SD-JWT • 2+ years defining digital signature standards • 5+ years with blockchain/DLT integrations, smart contracts, event-driven architecture • 3+ years with Ethers.js and Web3 integrations (wallet connectivity, transaction signing) • 1+ year with Zero-Knowledge Proofs (ZKP) for privacy-preserving proofs