Arena

People Operations

• Build and evolve foundational programs including onboarding, performance management, compensation, career development, and other initiatives that support company growth.
• Serve as a trusted advisor to leaders, providing guidance on team effectiveness, organizational design, employee relations, and people decisions.
• Create lightweight systems and processes that improve consistency while preserving speed and flexibility.
• Help shape an environment where employees can do their best work, driving initiatives that strengthen engagement, communication, and team health.
• Ensure the fundamentals are operating smoothly, from policies and documentation to compliance and employee lifecycle management.
• Partner with leadership on headcount planning, organizational structure, and evolving team needs.
• Identify gaps before they become bottlenecks, building the frameworks and tools needed to support a growing organization.

People Operations Lead

Cloud Engineer

• Real-time messaging infrastructure supporting 100,000 concurrent users per customer application;
• High performance systems with API responses in the 10ms range;
• Highly scalable architecture using auto-scaling policies, distributed systems and container orchestration;
• High availability infrastructure powering homepages of some of the most visited websites and apps on the internet;
• Managing distributed databases for our Data Platform storing every user engagement;
• Building infrastructure that enables product teams to ship fast with reliability and observability.

QA Engineer

🌐
Worldwide
❌ Jobs You've Hidden
⭐️ Saved Jobs
✅ Applied Jobs
✉️ Email Alerts
👤 Account
This job opening is no longer available.
Similar Jobs
Analista de Testes

🕒 August 26, 2025

SaveCash

11 - 50

🤝 B2B

🛍️ eCommerce

🌐 Web 3

Website
LinkedIn
All Job Openings

Analista de Testes QA remoto na Central de Oportunidades. Testes automatizados, NodeJS, APIs, Docker e processos ágeis.

🇧🇷 Brazil – Remote

⏰ Full Time

🟢 Junior

🔧 QA Engineer (Quality Assurance)

🚫👨‍🎓 No degree required

🗣️🇧🇷🇵🇹 Portuguese Required

Docker

Node.js

Search More QA Engineer Jobs
🌐
Worldwide
Built by Lior Neu-ner. I'd love to hear your feedback — Get in touch via DM or support@remoterocketship.com
Search
Search Jobs by country
Search jobs by city
Search jobs by job title
Search entry-level jobs
Search junior-level jobs
Search senior-level jobs
Search jobs by tech stack
Search jobs by contract type
Search remote internships
Search remote part-time jobs
Remote jobs Anywhere in the World
Companies Hiring Anywhere in the World
Companies Hiring Sales People Anywhere in the World
Companies Hiring Software Engineers Anywhere in the World
Resources
Advice
Tips for finding remote jobs
Interview questions and answers
Resume examples
Cover letter examples
Post a job
Affiliates
Privacy policy
Terms of service
Job board SEO course
AI Apply Copilot
OpenClaw job finder
Jobs by Country
Remote jobs anywhere in the world (Worldwide remote jobs)
Remote jobs United States
Remote jobs Australia
Remote jobs Brazil
Remote jobs Canada
Remote jobs France
Remote jobs Ireland
Remote jobs Germany
Remote jobs Netherlands
Remote jobs Spain
Remote jobs UK
Popular Jobs
Remote data analyst jobs
Remote customer support jobs
Remote executive assistant jobs
Remote marketing jobs
Remote product designer jobs
Remote product manager jobs
Remote project manager jobs
Remote recruiter jobs
Remote sales jobs
Remote software engineer jobs
Jobs by Type
Remote full-time jobs
Remote part-time jobs
Remote contract jobs
Remote internship jobs
Remote entry-level jobs
Remote jobs with no experience required
Remote junior jobs (1-3 years of experience)
Digital nomad jobs
Remote jobs with no degree required
Freelance remote jobs
Temporary remote jobs
Remote jobs hiring now
Stay at home mom jobs

Frontend Engineer

• As a front end engineer, you will have an enormous impact on making our app and API service faster, more scalable and more flexible.
• Collaborate with product and engineering teams to ship AI-powered features and make the existing ones perform orders of magnitude faster.
• Real-time messaging to support 500,000 concurrent users per customer application.
• Design and build AI applications, including Agents and model fine-tuning.
• Building for Performance - Delivering ultra-fast web applications optimized for performance.
• Complex Debugging - Investigating tricky issues and crafting robust solutions.
• High availability: our code is running on homepages of the most visited websites and apps in the internet.

Front end Engineer

Backend Engineer

• Collaborate with product and engineering teams to ship AI-powered features
• Make the app and API service faster, more scalable, and flexible
• Design and build AI Agents, RAG pipelines, model fine-tuning, and crawling.
• Ensure high performance and availability of applications

Back end Engineer

Business Development Rep

• Qualify leads from marketing campaigns as sales opportunities
• Qualify leads from self service sign ups
• Contact potential prospects through cold calls and emails (Outbound)
• Present our company to potential prospects
• Iterate and experiment with our messaging and pitch
• Identify prospect's needs and suggest appropriate products/services
• Set up meetings or calls between (prospective) customers and Sales Executives, though an Outbound playbook
• Use discovery meetings to qualify prospects
• Connect current customer use cases to potential prospects' use cases
• Be capable of short product demos
• Participate in product feedback sessions

Business Development Representative, BDR

Controller

• Own monthly, quarterly, and annual financial closes, delivering GAAP-compliant financial statements and analyses.
• Manage day-to-day financial operations including AP/AR, expense allocations, balance sheet reconciliations, and invoice reconciliation across major enterprise accounts.
• Own revenue recognition end-to-end, applying ASC 606 across complex enterprise contracts.
• Design and implement scalable financial systems, processes, and controls to support rapid growth, including leading our first ERP implementation.
• Manage cash flow and working capital timing across large enterprise billing cycles.
• Build and maintain a strong internal control environment and establish accounting policies from scratch.
• Lead audit and tax readiness — serve as the primary liaison for external auditors and ensure compliance with all local, state, and federal tax requirements.
• Partner with the Head of Finance and leadership to translate data into strategic insights and define the roadmap for building out the accounting function as the company scales.

Assistant Controller

Engineer

• Own the abuse vision for Arena: what gets detected, what gets enforced, how fast, and with what false-positive budget
• Design and operate detection for bots, sybils, coordinated inauthentic voting, and rating-system manipulation — the integrity of Arena's leaderboards is the product
• Build enforcement primitives (rate limits, challenges, shadowbans, account actions, model-side refusals) that are reversible, auditable, and humane
• Detect and mitigate inference abuse and cost exploitation at the platform layer
• Build jailbreak and multi-provider misuse detection across the models Arena serves, and partner with model-provider trust & safety teams on signal-sharing and escalation
• Scope and implement abuse monitoring for every new product launch — web search, web fetch, live site deployment, and whatever's next — as part of the launch checklist, not after the fact
• Prototype and mature into production systems of detection, review, and enforcement for the highest-severity harms (CSAM/NCII, violent extremism, self-harm), including the legal reporting pipeline (e.g., NCMEC)
• Build internal investigator tooling so policy, on-call, and future T&S analysts can triage incidents without engineering bottleneck
• Partner with Security on shared surface — account takeover, credential stuffing, API-key abuse, and the identity/behavioral-signal platform
• Partner with policy, legal, and leadership on acceptable-use policy, enforcement escalations, and public-integrity narrative

Founding Abuse Engineer

Full-stack Engineer

• Own features from technical scoping through deployment and post-launch iteration — not just build them, but make sure they work
• Design and extend schemas, APIs, and business logic to support new product capabilities
• Ship high-quality product code across the stack
• Incorporate real user feedback — from data, direct user contact, or your own product instincts — to improve what you've shipped
• Work closely with ML researchers to turn research services to production, making them consumable for product development
• Collaborate across design, product, and engineering to figure out what to build, not just how
• Identify and advocate for improvements to development, testing, and deployment practices

Senior Software Engineer, Product

Machine Learning Engineer

• Architect and scale high-performance, real-time API and data systems
• Design and implement low-latency pipelines to process and analyze large-scale event streams
• Ensure reliability through robust data integrity, availability, and consistency mechanisms
• Mentor and guide engineers on infrastructure best practices, architecture, and performance tuning
• Collaborate cross-functionally with AI researchers, product leaders, and engineers to anticipate evolving infrastructure needs and deliver resilient, extensible systems

Senior Software Engineer, ML Infrastructure

Content Manager

• Own Arena’s scientific communications strategy, ensuring that our evaluation methodology, benchmarks, and data quality practices are clearly understood and accurately represented externally.
• Lead Arena’s proactive data quality narrative, defending against common critiques and mischaracterizations through transparency, evidence, and high-integrity storytelling.
• Develop canonical explanations of Arena’s measurement approach, including Bradley-Terry-Luce-style ranking, confidence intervals, and uncertainty-aware interpretation.
• Ensure that Arena’s leaderboards are communicated responsibly: rankings are statistical estimates, small differences are often noise, and uncertainty must be preserved in public interpretation.
• Anticipate, track, and respond to methodological critiques, especially around contamination, overfitting, gaming, distribution shift, and evaluation validity.
• Partner closely with researchers to translate technical work into rigorous public materials, including methodology documentation, research posts, and open-source releases.
• Support Arena’s Academic Partnerships Program, strengthening scientific connectivity through collaborations, citations, and peer-reviewed credibility.
• Create briefing materials for high-stakes audiences, including frontier AI labs, policymakers, analysts, and enterprise partners, ensuring that technical nuance survives external scrutiny.
• Serve as a scientific editor and reviewer across external communications, stress-testing claims before they become public narratives.

Scientific Content Lead

Social Media Manager

• Write, schedule, and manage content for X and LinkedIn that reflects our brand voice and values, tailored to each platform’s strengths and audience.
• Translate technical updates, product launches, and AI trends into engaging, accessible, and shareable posts.
• Maintain a forward-looking content calendar aligned with product milestones, community activity, and key events in the AI space.
• Monitor and participate in conversations across the AI and research ecosystem, contributing meaningfully and amplifying relevant voices.
• Drive growth in followers, reach, and engagement through experimentation, iteration, and real-time awareness.
• Build relationships with key community members, including AI researchers, developers, and early adopters.
• Develop platform-specific strategies to grow and sustain a presence on X, LinkedIn, and future channels.
• Track key performance metrics, analyze audience behavior, and use insights to inform content direction and tone.
• Collaborate with product to amplify launches, surface community activity, and bridge conversations across social and Discord.

Social Media Lead

• Design and build robust data pipelines to ingest, process, and transform user vote data to features essential for model performance evaluation.
• Collaborate with researchers and product leadership to understand product goals and necessary data.
• Design and implement solutions to generate result dashboards and reports, providing useful information for the public, model providers, and researchers.
• Ensure the integrity, data quality, and reliability of the pipelines.
• Scale our data infrastructure to accommodate increasing data volumes and evolving analytical needs.

Senior Software Engineer, Data Infrastructure

Technical Recruiter

• Partner with hiring managers to clarify role outcomes, success profiles, and interview plans; prioritize reqs against business goals.
• Run full-cycle recruiting: kickoff → JD refinement → sourcing → assessment → debriefs → offer → close.
• Build pipelines via targeted sourcing (passive outreach, talent communities, events, referrals, and thoughtful job posts).
• Maintain a structured, fair process: define competencies, calibrate rubrics, and uphold a consistent candidate experience.
• Hold a relentless drive for excellence in every stage—calibrating rubrics, tightening loops, and continuously improving the funnel.
• Track and improve funnel health (speed, quality, diversity signals); report weekly and quarterly progress with clear narrative and metrics.
• Drive offer strategy and negotiations aligned to leveling, compensation bands, and market insights.
• Nurture long-term networks of high-potential talent; keep a mapped bench for critical and future roles.
• Partner on employer brand moments (events, content, communities) that attract deep-tech talent.
• Coach hiring managers and interviewers on best practices and candidate excellence.

Infrastructure Engineer

• Own technical strategy for LMArena’s core infrastructure - networking, APIs, services, data systems, and security foundations.
• Design and implement high-performance systems that scale to hundreds of millions of real-time interactions and evaluations per day.
• Collaborate with security engineering to embed anti-abuse measures, Sybil resistance, and trust systems into core platform architecture.
• Partner with product engineering to deliver infrastructure improvements that directly accelerate feature velocity and reliability.
• Build developer-facing primitives and tooling—internal APIs, SDKs, CI/CD enhancements—that make our platform more productive and safe to build on.
• Monitor, profile, and optimize system performance across backend services, databases, and networking layers.
• Drive operational excellence through observability, capacity planning, and incident response best practices.
• Mentor engineers across the company in building scalable, performant, and secure systems.