Ciklum
From Ciklum's careers page
Status: listed on the employer's own careers page when we last checked (daily). Confirm on their site before applying.
About the role: As a Senior Full Stack Engineer, become a part of a cross-functional development team engineering experiences of tomorrow.
Ciklum is looking for a Senior Full Stack Engineer to join our team full-time in Brazil.
We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.
As a Senior Full Stack Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. You will work for an American partner known for selling and distributing tickets for various events. One of the leading providers of booking and ticketing services in the arts and entertainment industry, operating on a global scale.
Build production AI agents: develop TypeScript services on AWS (Lambda, Step Functions, DynamoDB, Bedrock) using Strands or LangGraph and AI SDKs
Design agent behavior: define what the model investigates and what code enforces
Sandbox agents: build read-only runtimes, scoped tool access, worktree-contained reads, and budget/timeout guards against model misbehavior
Evaluate AI features: build golden sets and production replays, calibrate judges, gate changes on recall, precision and false-positive rate, and compare models and effort levels before release
Ensure observability: emit reason-coded metrics and structured logs, alert on failures, and investigate production misses in Splunk and VictoriaMetrics
Run infrastructure: maintain Terraform roots across environments under tagging and permission-boundary rules; improve GitLab CI/CD for build, test, deploy and quality gates
Build integrations resilient to retries, rate limits, permanent failures and stale state
Use AI to write/review code; keep agent context current
Review AI-written changes for security, correctness and maintainability, catching issues tests miss
Enable teams: configure assistants, skills, hooks and MCP servers; pair with engineers and share proven practices
Build agent-facing tools: React and APIs for summaries, dashboards and internal tooling, with outputs readable by agents, CLIs and Slack
Document systems with architecture/sequence diagrams, runbooks and decision records
Full Stack & Versatility: Broad technical perspective with an emphasis on adaptability across modern software stacks and architectures, favoring breadth and quick ramp-up over narrow specialization.
Frontend &TypeScript: Strong production experience with modern React and TypeScript (including Node.js, async patterns, testing, and monorepo tooling)
Backend & Scripting: Working proficiency with Python for backend services, evaluations, analysis, and automation tooling
AWS Beyond Serverless: Practical hands-on experience across the AWS ecosystem—extending beyond serverless (Lambda, Step Functions, DynamoDB, Bedrock) to broader architectural components such as containers (ECS/EKS), networking, compute, and IAM
LLM features in production: Has shipped features leveraging LLM APIs (prompts, tool calling, structured output, long context) and can describe the eval that gated release, what failed, and what changed
AI Champion Mindset: Enthusiastic, proactive embrace of AI-assisted engineering tools in daily workflows (e.g., Copilot, Cursor, LLM APIs) combined with the drive to champion AI-first practices and productivity across the team
Infrastructure as Code: Able to read and safely modify Terraform configurations across environments
Data: Hands-on experience with both NoSQL and SQL stores, including schema changes and live-system migrations
Observability: Able to design metrics, logs, and alarms for non-deterministic systems, and effectively debug production issues from them
CI/CD: Proficiency with modern CI/CD pipelines, ideally GitLab CI/CD
Communication: Fluent written and spoken English, with the ability to articulate trade- offs clearly and align team members around technical decisions
Multi-agent systems, MCP servers, or evaluation frameworks
LLM cost control: model routing, prompt caching, token budgets
Prompt-injection defense and agent security
GraphQL for internal APIs and tooling
Code intelligence or retrieval work (indexing, symbol search, knowledge bundles)
Kubernetes, AWS AppSync, and EventBridge
Playwright/Cucumber test automation
Claude Certified Developer or Claude Certified Architect (Anthropic)
What’s in it for you?
Care: your mental and physical health is our priority. We ensure comprehensive company-paid medical insurance and mental health programs, 5 undocumented sick-leave days per year
Tailored education path: boost your skills and knowledge with our regular internal events (meetups, conferences, workshops), Udemy license, language courses and company-paid certifications
Growth environment: share your experience and level up your expertise with a community of skilled professionals, locally and globally
Long-term employment with 20 working-days paid vacation and local bank holidays
Flexibility: 100% remote work mode
Opportunities: we value our specialists and always find the best options for them. Our Internal Mobility Program helps change a project if needed to help you grow, excel professionally and fulfill your potential
Global impact: work on large-scale projects that redefine industries with international and fast-growing clients
Welcoming environment: feel empowered with a friendly team, open-door policy, informal atmosphere within the company and regular team-building events
At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.
As we expand into Latin America, every Ciklumer is helping to shape our story. Collaborate with seasoned experts and make a global impact backed by two decades of industry leadership.
Explore, empower, engineer with Ciklum!
Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.
#LI-AD1
Scores your resume against this job the way resume scanners do: the job's hard and soft skills, searchability, recruiter tips and formatting.
Create a free account to see your score. Your resume stays in this browser until then, and we never store it.
Already a member? Sign in