AlignerrCoding & software eval
Senior Software Engineer: Agentic Coding
up to $120/hr
About this role, in Alignerr's words
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.
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
Show all 8 itemsHide the other 5 in What you'll do
- 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
Candidate background
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
Show all 6 itemsHide these 6 items in 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
Quoted from selected sections of Alignerr's posting. The full posting may state other conditions. Read the full posting
A closer look
More context, when you need it.
Full job descriptionThe original posting, in Alignerr's words
Posted by Alignerr, reproduced here so you can judge the role before clicking. Original posting ↗
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
Working with AlignerrPay, getting started and work, from Alignerr's own pages
What the platform publishes in general. These are not extra terms confirmed for this particular role.
- Getting paid
- Billed weekly, Monday to Sunday, with approved work paid by the following Friday, according to Labelbox's help center. Payment goes through Stripe Connect or PayPal depending on your location, with one provider per country. intercom.help/labelbox/en/articles/13600616-alignerr-paym..., alignerr.com/process
- Before your first paid task
- Sign up, apply, verify your identity, set up billing and onboard. Some jobs add a Zara AI interview or domain assessments. alignerr.com/process
- How much work
- Time to your first project depends on demand and your skills, and there is no minimum number of hours. alignerr.com/faqs
- Contract
- Independent contractor, under terms with ALIGNERR LLC. alignerr.com/faqs, alignerr.com/privacy
Read on the pages linked above on 24 Sep 2026. Platforms change these terms, so check the linked page before you rely on one.
How does the pay compare?Across Coding & software eval roles, not this role alone
From our own daily reads of every open listing on the platforms we follow, not from Alignerr's posting. How we count.
Pay across the field: Coding & software eval
Across 393 roles in this field with a stated hourly rate in US dollars, on 14 platforms, the middle half pays $65 to $120 an hour at the top of the range, and the median is $95. This role's top rate, $120, is in the top quarter. Of the 141 distinct rates we count, 97 are lower and 31 are higher.
| Platform | Roles | Top of range, per hour |
|---|---|---|
| Alignerr (this platform) | 136 | $50 to $400 · median $100 |
| micro1 | 46 | $35 to $350 · median $110 |
| Handshake AI | 43 | $47 to $125 · median $80 |
| Meridial (Invisible) | 34 | $22 to $150 · median $60 |
| Mercor | 33 | $60 to $200 · median $105 |
Sources and listing historyWhere this information comes from
This listing's history
- First seen here on 27 Aug 2026, and still on Alignerr's list when we last read it on 13 Oct 2026.
- The listed pay has not changed since then.
- Posted by Alignerr
- First seen by AIPayList
- Last seen live
- Listing ID
- 31cc7387-94ce-48d9-bbec-9433c2e69eb8
Pay as the source states it: “$80-120/hr”.
Platforms sometimes change a rate after posting. Every listing here is re-read at least once a day and corrected when its source moves, so a difference you see on the platform is usually a change made since the last read. How freshness works.
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