Ciklum

Senior Full Stack Engineer

Ciklum
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2 days ago
Remote, BrazilSenior

Responsibilities

  • Build production AI agents with TypeScript services on AWS using Lambda, Step Functions, DynamoDB, Bedrock, Strands or LangGraph, and AI SDKs.
  • Define agent behavior, build read-only sandboxes and scoped tool access, and enforce worktree, budget, timeout, and security controls.
  • Create golden sets, production replays, calibrated judges, and release gates based on recall, precision, and false-positive rates.
  • Implement metrics, structured logs, alerts, and production investigations using Splunk and VictoriaMetrics.
  • 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, maintainability, and test coverage, and help teams configure assistants, skills, hooks, and MCP servers.
  • Build React interfaces and APIs for agent-facing summaries, dashboards, and internal tooling consumable by agents, CLIs, and Slack.
  • Document systems with architecture and sequence diagrams, runbooks, and decision records.

Requirements

  • Strong production experience with TypeScript, Node.js, asynchronous code, testing, and monorepo tooling.
  • Production experience shipping LLM API features involving prompts, tool calling, structured output, and long context, including release evaluations and failure analysis.
  • Proficiency in Python for evaluations, analysis, and scripting.
  • Hands-on AWS serverless experience with 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 non-deterministic 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 qualifications include multi-agent systems, MCP servers, evaluation frameworks, LLM cost controls, prompt-injection defense, agent security, React, GraphQL, Java, Spring Boot, Kubernetes, AWS AppSync, EventBridge, Playwright, Cucumber, code intelligence, retrieval systems, and Anthropic certification.

Benefits

  • 100% remote work from Brazil with full-time, long-term employment.
  • Company-paid medical insurance, mental health programs, and five undocumented sick-leave days per year.
  • 20 working days of paid vacation plus local bank holidays.
  • Internal meetups, conferences, workshops, Udemy access, language courses, and company-paid certifications.
  • Internal mobility opportunities, global projects, team-building events, and a collaborative open-door culture.

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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