Ciklum

Senior Full Stack Engineer

Ciklum
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2 days ago
Remote, BrazilSenior

Responsibilities

  • Build production AI agents and TypeScript services on AWS using Lambda, Step Functions, DynamoDB, Bedrock, Strands or LangGraph, and AI SDKs.
  • Design agent behavior, including model investigation boundaries, enforced code behavior, scoped tool access, sandboxing, budgets, and timeouts.
  • Build evaluation systems using golden sets, production replays, calibrated judges, recall, precision, and false-positive-rate gates.
  • Implement observability through reason-coded metrics, structured logs, alerts, Splunk, and VictoriaMetrics, and investigate production failures.
  • Maintain Terraform infrastructure across environments and improve GitLab CI/CD for build, test, deployment, and quality gates.
  • Build resilient integrations handling 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, APIs, summaries, dashboards, and internal tooling, and document systems with diagrams, runbooks, and decision records.

Requirements

  • Strong production experience with TypeScript and Node, including asynchronous code, testing, and monorepo tooling.
  • Production experience shipping LLM API features involving prompts, tool calling, structured output, and long context, with the ability to explain evaluations, failures, and fixes.
  • Proficiency with Python for evaluations, analysis, and scripting.
  • Experience with AWS serverless development, including Lambda, Step Functions, DynamoDB, IAM, event-driven design, and Bedrock.
  • Ability to safely read and modify Terraform across multiple environments.
  • Hands-on NoSQL and SQL experience, including live schema changes and migrations.
  • Experience designing metrics, logs, and alarms for nondeterministic systems and debugging production issues.
  • Proficiency with CI/CD, ideally GitLab CI/CD, and daily use and verification of AI coding assistants.
  • Fluent spoken and written English with the ability to explain trade-offs and drive team adoption.
  • Desirable experience with multi-agent systems, MCP servers, evaluation frameworks, model routing, prompt caching, token budgets, prompt-injection defense, agent security, React, GraphQL, Java, Spring Boot, code intelligence, retrieval, Kubernetes, AWS AppSync, EventBridge, Playwright, Cucumber, or Claude Certified Developer or Architect certification.

Benefits

  • Company-paid medical insurance, mental health programs, and five undocumented sick-leave days per year.
  • Internal meetups, conferences, workshops, Udemy access, language courses, and company-paid certifications.
  • Long-term employment with 20 working days of paid vacation and local bank holidays.
  • 100% remote work in Brazil.
  • Internal Mobility Program, global projects, community growth opportunities, and regular team-building events.

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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