Ciklum

Senior Full Stack Engineer

Ciklum
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2 days ago
Remote, PolandSenior

Responsibilities

  • Build production AI agents with TypeScript services on AWS using Lambda, Step Functions, DynamoDB, Bedrock, Strands, LangGraph, and AI SDKs.
  • Design agent behavior, sandboxed runtimes, scoped tool access, read-only worktrees, and budget and timeout safeguards.
  • Build evaluation systems using golden sets, production replays, calibrated judges, and recall, precision, and false-positive gates.
  • Implement observability with reason-coded metrics, structured logs, alerts, Splunk investigations, and VictoriaMetrics.
  • Maintain Terraform roots across environments and improve GitLab CI/CD for build, test, deployment, and quality gates.
  • Build integrations resilient to retries, rate limits, permanent failures, and stale state.
  • Review AI-generated code for security, correctness, and maintainability, and help teams configure assistants, skills, hooks, and MCP servers.
  • Build React-based agent-facing tools and APIs for summaries, dashboards, and internal tooling.
  • Document systems through architecture and sequence diagrams, runbooks, and decision records.

Requirements

  • Broad full-stack perspective with adaptability across modern software stacks and architectures.
  • Strong production experience with React and TypeScript, including Node.js, asynchronous patterns, testing, and monorepo tooling.
  • Working proficiency with Python for backend services, evaluations, analysis, and automation.
  • Hands-on AWS experience beyond serverless, including containers, networking, compute, and IAM.
  • Production experience shipping LLM API features using prompts, tool calling, structured output, and long context, including release-gating evaluations.
  • Experience reading and safely modifying Terraform configurations across environments.
  • Hands-on experience with both NoSQL and SQL stores, including schema changes and live-system migrations.
  • Ability to design metrics, logs, and alarms for non-deterministic systems and debug production issues.
  • Proficiency with modern CI/CD pipelines, ideally GitLab CI/CD.
  • Fluent written and spoken English and the ability to communicate technical trade-offs clearly.
  • Desirable experience with multi-agent systems, MCP servers, evaluation frameworks, LLM cost control, prompt-injection defense, agent security, GraphQL, code intelligence or retrieval, Kubernetes, AWS AppSync, EventBridge, Playwright, Cucumber, or Claude certifications.

Benefits

  • Full-time employment with full remote working possibilities in Poland.
  • Internal events, meetups, conferences, workshops, Udemy access, language courses, and company-paid certifications.
  • Opportunities for internal mobility across diverse domains and projects.
  • Company-paid premium medical package through Luxmed.
  • Access to the MyBenefit cafeteria platform.
  • Collaborative community and opportunities to work on large-scale projects with global impact.

Tech Stack

Amazon DynamoDBAWSCucumberGitLab CI/CDGraphQLJavaKubernetesNode.jsPythonReactSplunkSpring BootSQLTerraformTypeScript
Ciklum

About Ciklum

1,001-5,000 employees

Ciklum is an IT services firm that builds custom digital products and provides nearshore engineering teams, QA, DevOps, data analytics, and UX for enterprises and high-growth startups. It operates a services model spanning product engineering, e-commerce solutions, and managed delivery centers. Founded in 2002 and headquartered in London, the privately held company serves global clients including Just Eat and Zurich Insurance.

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