Senior Systems Analyst

We are looking for an experienced Systems Analyst to participate in the design, development, documentation, and implementation of complex software and automated information systems. - Required Experience and Qualifications * At least five years of hands‑on software development experience. * Experience working as a Systems Analyst, Technical Analyst, Software Engineer, or in a similar technical role. * Strong understanding of software architecture, distributed systems, microservices, and system integration principles. * Practical knowledge of the following technologies: * PostgreSQL; * MySQL; * Redis; * RabbitMQ; * AWS EC2 and related AWS infrastructure services. * Strong SQL knowledge and experience working with relational databases, data models, database schemas, and complex queries. * Experience designing REST APIs and integrations between internal systems, external services, and third‑party providers. * Experience preparing technical documentation for complex software and automated information systems. * Knowledge of international systems and software engineering documentation standards, including: * ISO/IEC/IEEE 29148 — Requirements Engineering; * ISO/IEC/IEEE 15289 — Life‑Cycle Information and Documentation; * ISO/IEC/IEEE 42010 — Architecture Description; * ISO/IEC/IEEE 12207 — Software Life‑Cycle Processes. * Experience developing the following types of documentation: * Business Requirements Specifications; * System Requirements Specifications; * Software Requirements Specifications; * Functional Specifications; * Technical Specifications; * System Architecture Documents; * Interface and Integration Specifications; * API Documentation; * Data Models and Database Specifications; * Use Cases and User Stories; * System Operation and Support Documentation. * Ability to collect, analyse, formalise, structure, and document business and technical requirements. * Ability to transform business requirements into clear functional and technical requirements. * Experience decomposing complex requirements into development tasks. * Ability to prepare clear and detailed assignments for software developers. * Experience working directly with developers, QA engineers, DevOps engineers, product managers, business representatives, and external partners. * Good command of written and spoken English, including the ability to prepare professional technical documentation in English. - Key Responsibilities * Collect, analyse, clarify, and formalise business and technical requirements. * Develop and maintain requirements for software products and automated information systems. * Prepare system requirements, software requirements, functional specifications, and technical specifications. * Translate business needs into clear and implementable technical solutions. * Create detailed development tasks with acceptance criteria, business rules, validation rules, and expected system behaviour. * Decompose large features and business requirements into manageable development tasks. * Assign and explain tasks to software developers. * Support developers throughout the implementation process and clarify requirements when necessary. * Design system components, services, APIs, data flows, and integration processes. * Describe request and response formats, data structures, validation rules, error‑handling logic, and processing algorithms. * Prepare and maintain technical documentation in accordance with applicable ISO/IEC/IEEE standards and the company’s internal documentation standards. * Develop system architecture descriptions, integration diagrams, sequence diagrams, activity diagrams, data‑flow diagrams, and process models. * Document automated information systems throughout their complete life cycle. * Participate in architectural and technical solution discussions. * Review implemented functionality and verify its compliance with approved requirements. * Support QA engineers in preparing test scenarios and acceptance criteria. * Participate in functional, integration, and user acceptance testing. * Analyse change requests and assess their impact on existing systems, integrations, databases, and business processes. * Keep system documentation accurate and up to date following software changes and releases. - Required Modelling and Documentation Skills The successful candidate should be able to work with: * UML; * BPMN; * Sequence diagrams; * Activity diagrams; * State diagrams; * Component diagrams; * Deployment diagrams; * Entity‑relationship diagrams; * Data‑flow diagrams; * Flowcharts; * API specifications using OpenAPI or Swagger; * User stories and acceptance criteria; * Functional and non‑functional requirements; * Traceability matrices. - Preferred Qualifications * Experience in FinTech, payment processing, banking, acquiring, or card payment systems. * Knowledge of payment industry standards such as ISO 8583, ISO 20022, EMV, PCI DSS, or EMV 3‑D Secure. * Experience working with high‑load, highly available, and distributed systems. * Understanding of information security, data protection, audit, logging, monitoring, and access‑control requirements. * Experience with Docker, Kubernetes, CI/CD, and cloud infrastructure. * Knowledge of Python, Go, Java, JavaScript, C++, or another modern programming language. * Experience with Jira, Confluence, GitLab, Postman, Swagger, or similar tools. * Experience participating in the complete software development life cycle, from initial requirements analysis to production release and operational support.