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Senior Software Engineer — Agentic Coding (AI Training) About The Role What if your software engineering expertise could define how the next generation of AI writes, debugs, and ships code on its own? We're looking for Senior Software Engineers in São Paulo to work at the frontier of agentic AI — building, evaluating, and improving autonomous coding systems that can reason through complex problems, execute multi-step plans, and produce production-quality software with minimal human intervention. São Paulo is Latin America's largest tech hub, and we're looking for senior engineers here who are ready to apply their deep skills to the most transformative technology of our time. Your code, judgment, and architectural thinking will directly shape how these systems evolve. This is a fully remote, flexible contract role. If you're a senior engineer who's excited about agentic AI and wants to work on problems that genuinely matter, we want to hear from you. Organization: Alignerr Type: Hourly Contract Location: Remote Commitment: 10–40 hours/week What You'll Do Design, build, and refine agentic coding workflows — systems where AI autonomously plans, writes, tests, and iterates on code Evaluate AI-generated code for correctness, efficiency, security, and adherence to best practices Create complex, real-world coding challenges and benchmarks to stress-test agentic AI capabilities Provide expert-level feedback on AI reasoning chains, tool usage, and code output quality Identify failure modes, edge cases, and areas where autonomous agents break down Develop and improve evaluation frameworks, rubrics, and testing harnesses for agentic systems Collaborate asynchronously with researchers and engineers working on large language models and AI agents Work independently on task-based assignments at your own pace and on your own schedule Who You Are 5+ years of professional software engineering experience — you've built, shipped, and maintained real systems Proficient in one or more major languages: Python, JavaScript/TypeScript, Java, C++, Go, or Rust Strong understanding of software architecture, design patterns, and system design principles Comfortable reading, reviewing, and debugging code you didn't write — across diverse codebases and styles Deep familiarity with modern development workflows: version control, CI/CD, testing frameworks, and code review Excellent problem-solving and analytical thinking — you can reason through ambiguous, multi-step technical challenges Clear, precise technical communicator who can articulate why code is good, bad, or broken Self-directed and reliable when working independently without close supervision Genuinely curious about AI, LLMs, and the future of autonomous software development Strong written communication skills in English Nice to Have Experience with AI/ML systems, prompt engineering, or LLM-based tooling Familiarity with agentic frameworks (e.g., LangChain, AutoGPT, CrewAI, OpenAI function calling) Background in developer tools, compilers, static analysis, or code generation Experience evaluating or training AI models — RLHF, preference labeling, or similar workflows Contributions to open-source projects or a strong public engineering portfolio Knowledge of multiple programming paradigms and languages Why Join Us Work at the absolute frontier of agentic AI — one of the most exciting areas in technology today Collaborate on cutting-edge projects alongside leading AI research labs Fully remote and flexible — work when and where it suits you Freelance autonomy with the depth and challenge of meaningful, high-impact engineering work Your expertise directly shapes how AI agents write software — influencing tools used by millions of developers Ongoing learning exposure to state-of-the-art large language models and autonomous systems Potential for long-term engagement and contract extension as projects scale
Here's how to pick the right one and stand out in your application.
144.883Jobs
31.687IN
81%EN
That number is real. WorkMundi's database shows 144,883 open engineer roles across the world. India has the most with 31,687 jobs, followed by the United States with 30,084. If you just finished reading one job ad and felt paralyzed by choice, you're not alone—but this scale is actually an advantage. It means you can afford to be selective.
Start by geography and language. The majority of engineer ads—117,837 of them—have the job posting text written in English. Use that as one filter, but remember: the ad text language tells you nothing about whether the role actually requires you to speak English day-to-day. Read the job description carefully. Then check which countries have the volume you're targeting. Singapore, Poland, and Australia round out the top five after India and the US.
Next, learn who's hiring. Accenture has posted 2,801 engineer roles. andurilindustries, speechify, and jobgether are also actively recruiting. If you're applying to one of these names, research their hiring patterns and interview style before you apply. That homework pays off.
When you interview, expect the question every engineer hears: 'Tell me about a time you had to debug a problem that wasn't in your job description.' Have a specific story ready—not a general one. Name the tools, the deadline pressure, and what you learned. Hiring managers listen for whether you see problem-solving as part of the role itself, not a favour.