Software & Cloud Engineer – Platform Integration & Launch Support

Cognitiva Systems is looking for a hands-on mid-level engineer in Sarajevo to help prepare CognitivaOS for launch and support the platform after go-live. This is a broad engineering role combining application development, Claude-assisted coding, AWS cloud operations, API/provider integrations, end-to-end testing, troubleshooting, and Level 3 support. The role is ideal for someone who enjoys working across the stack, learning a complex platform quickly, and solving practical problems rather than staying within a narrow specialization.

A mid-level role: around 3–5 years of relevant hands-on experience; strong candidates with slightly less or more experience are considered.

You will

• Use Claude/Claude Code effectively to understand the existing codebase, implement changes, refactor safely, write tests, and accelerate debugging while following engineering review standards.
• Work with the existing CognitivaOS codebase and contribute to backend, API, integration, and selected frontend changes as needed.
• Support AWS environments including deployments, IAM/permissions, networking basics, secrets, logging, monitoring, databases, storage, and environment troubleshooting.
• Integrate and support third-party providers through REST APIs, SDKs, webhooks, callbacks, and asynchronous events.
• Help validate integrations with payment, KYC/identity, messaging/email, cloud, and other platform providers.
• Own end-to-end testing of critical workflows across Brand, Agency, Management Agency, Creator, and Core experiences.
• Test happy paths and failure paths including timeouts, retries, duplicate webhooks/events, invalid states, permission failures, payment exceptions, and provider outages.
• Support staging and production release readiness, regression testing, smoke testing, deployment checks, and launch-day technical support.
• Investigate Level 3 production issues using logs, traces, database queries, provider dashboards, and reproduction steps; identify root cause and implement or coordinate fixes.
• Create operational runbooks, troubleshooting guides, environment notes, and support documentation.
• Train Level 1/Level 2 support staff on system flows, common issues, escalation criteria, and how to collect useful diagnostic information.
• Assist with monitoring and alerting improvements so failures are detected before they become customer-reported incidents.
• Support data-quality and reconciliation checks where application state must match external provider state, especially around payment and verification workflows.
• Work closely with the CTO, learning the architecture, deployment, integration, and operational procedures.
• Participate in code reviews, pull requests, CI/CD checks, test automation, and release processes.
• Follow Cognitiva security, privacy, access-control, and data-residency requirements when working with environments and customer data.

You bring

• Approximately 3–5 years of software engineering experience.
• Strong working knowledge of JavaScript/TypeScript and modern web/backend development; experience with Node.js and React/Next.js is highly relevant.
• Comfortable reading an unfamiliar codebase, debugging issues, and making production-quality changes.
• Practical experience with AWS services and cloud-hosted applications.
• Experience integrating REST APIs, webhooks, SDKs, and third-party services.
• Good SQL and relational database skills, preferably PostgreSQL.
• Experience with Git, pull requests, CI/CD, and modern development workflows.
• Ability to test complete user journeys and think beyond a single component or feature.
• Strong troubleshooting mindset: able to work from symptoms, logs, events, and provider responses to root cause.
• Clear written and verbal English for documentation, provider communication, and support-team training.
• Comfort working in a startup environment where priorities may shift and ownership is broad.