https://aitrainers.jobs/ai-training-jobs/coding/country/es12 open coding roles name Spain as a country they accept, and 49 more coding roles are open worldwide. Among the 8 that state an hourly rate, the median is $65/hr.en Tue, 20 Oct 2026 16:05:40 GMT https://aitrainers.jobs/jobs/ai-security-testing-analyst-16ex9zhttps://aitrainers.jobs/jobs/ai-security-testing-analyst-16ex9zWed, 14 Oct 2026 00:00:03 GMTAlignerr · Spain, Brazil · $15–75/hr https://aitrainers.jobs/jobs/python-developer-remote-in-spain-111yjghttps://aitrainers.jobs/jobs/python-developer-remote-in-spain-111yjgMon, 14 Sep 2026 15:20:47 GMTRemote project consulting on Python engineering tasks such as debugging, migrations and test writing for AI model training. Suits engineers with a few years of professional experience who want to choose their own projects and hours. https://aitrainers.jobs/jobs/backend-developer-spain-16cocqhttps://aitrainers.jobs/jobs/backend-developer-spain-16cocqMon, 14 Sep 2026 15:00:07 GMTRemote contract work building backend coding scenarios and checking peer submissions for correctness. Suits backend engineers with several years of production experience who like project-based consulting. https://aitrainers.jobs/jobs/full-stack-developer-ai-trainer-spain-hywca8https://aitrainers.jobs/jobs/full-stack-developer-ai-trainer-spain-hywca8Thu, 09 Jul 2026 16:17:04 GMTRemote contract work building and checking full-stack coding scenarios for AI model evaluation. Suits engineers with several years of production experience who want flexible, project-based consulting. https://aitrainers.jobs/jobs/software-engineering-ai-trainer-spain-12eos6https://aitrainers.jobs/jobs/software-engineering-ai-trainer-spain-12eos6Tue, 02 Jun 2026 15:53:09 GMTRemote project-based work creating coding tasks, reference solutions and tests to train AI models. Suits experienced software engineers who can debug large codebases and give structured peer feedback. https://aitrainers.jobs/jobs/coding-specialist-fluent-in-spanish-spain-freelance-ai-trainer-project-dhg82khttps://aitrainers.jobs/jobs/coding-specialist-fluent-in-spanish-spain-freelance-ai-trainer-project-dhg82kSat, 14 Jun 2025 01:35:12 GMTAssess an AI model's software engineering reasoning in Spanish as used in Spain, documenting failure modes and fluency issues. Suits Spain-based engineers with technical writing or open-source work. https://aitrainers.jobs/jobs/security-software-engineer-python-ai-evaluation-1s8uhkhttps://aitrainers.jobs/jobs/security-software-engineer-python-ai-evaluation-1s8uhkMon, 19 Oct 2026 18:21:57 GMTContract work evaluating AI models on security coding tasks such as vulnerability analysis and patch validation. Suits experienced software engineers with hands-on security work who write clear technical feedback. https://aitrainers.jobs/jobs/senior-application-security-engineer-ai-code-evaluation-v8hg40https://aitrainers.jobs/jobs/senior-application-security-engineer-ai-code-evaluation-v8hg40Mon, 19 Oct 2026 18:21:52 GMTContract work evaluating AI models on security coding tasks such as vulnerability analysis and patch validation. Suits senior application security engineers who can write clear, structured technical feedback. https://aitrainers.jobs/jobs/ml-engineer-msc-or-phd-afg4v7https://aitrainers.jobs/jobs/ml-engineer-msc-or-phd-afg4v7Fri, 16 Oct 2026 00:00:00 GMTML engineers implement and validate models, training pipelines and inference systems, then debug numerical and performance failures. Suits master's or PhD-level practitioners with strong Python skills and experience using coding agents. https://aitrainers.jobs/jobs/puzzle-solver-coding-1nu504https://aitrainers.jobs/jobs/puzzle-solver-coding-1nu504Fri, 16 Oct 2026 00:00:00 GMTCompetitive programmers solve self-contained coding and logic challenges and verify solutions against explicit and hidden constraints. Suits experienced problem solvers with a verifiable Codeforces record who reason carefully about edge cases. https://aitrainers.jobs/jobs/software-engineer-open-source-contributor-fzwqsghttps://aitrainers.jobs/jobs/software-engineer-open-source-contributor-fzwqsgWed, 14 Oct 2026 00:00:00 GMTWrites reproducible coding tasks with reference fixes and deterministic checks that test whether AI can fix bugs and add features. Suits software engineers with public open-source work who can write careful, independent solutions. https://aitrainers.jobs/jobs/software-engineer-github-contributor-1ka9bshttps://aitrainers.jobs/jobs/software-engineer-github-contributor-1ka9bsWed, 14 Oct 2026 00:00:00 GMTWrites reproducible coding tasks with reference fixes and deterministic checks that test whether AI can fix bugs and add features. Suits software engineers with a visible GitHub record who can write careful, independent solutions. https://aitrainers.jobs/jobs/software-engineer-ai-training-lgng7ihttps://aitrainers.jobs/jobs/software-engineer-ai-training-lgng7iTue, 13 Oct 2026 00:00:02 GMTWrite, debug and review code, then judge AI-generated solutions for correctness, efficiency and security. Suits software engineers in Shanghai who explain technical decisions clearly and enjoy evaluating diverse problems independently. https://aitrainers.jobs/jobs/software-developer-get-paid-to-build-your-own-project-with-an-ai-codin-1n46d7https://aitrainers.jobs/jobs/software-developer-get-paid-to-build-your-own-project-with-an-ai-codin-1n46d7Thu, 08 Oct 2026 15:04:09 GMTRemote contract work where developers build their own software project with an AI coding assistant and rate its responses. It suits Barcelona-based developers with a solo or open-source git project who can write clear evaluations. https://aitrainers.jobs/jobs/game-developer-1f36fqhttps://aitrainers.jobs/jobs/game-developer-1f36fqFri, 02 Oct 2026 01:05:46 GMTGame developers create practical tasks, review game codebases and judge AI-generated game logic and scripts. Suited to developers with two or more years of hands-on game work and a portfolio. https://aitrainers.jobs/jobs/mobile-game-developer-jnebj5https://aitrainers.jobs/jobs/mobile-game-developer-jnebj5Fri, 02 Oct 2026 01:07:15 GMTMobile game developers build and review Unity features and judge AI-written gameplay code. Suited to experienced Unity developers with a portfolio of finished mobile game projects. https://aitrainers.jobs/jobs/software-engineer-llm-evaluation-repository-validation-1973yohttps://aitrainers.jobs/jobs/software-engineer-llm-evaluation-repository-validation-1973yoFri, 02 Oct 2026 00:22:31 GMTRemote contributor work triaging open-source repositories, setting up reproducible environments and testing how well language models fix real bugs. Suits experienced developers who enjoy working in unfamiliar codebases and writing clear findings. https://aitrainers.jobs/jobs/machine-learning-engineer-imfl9yhttps://aitrainers.jobs/jobs/machine-learning-engineer-imfl9yThu, 01 Oct 2026 22:50:38 GMTRemote role designing machine learning and LLM engineering tasks and reviewing AI-written code and experimental methodology. Suits ML engineers with PyTorch or TensorFlow experience and strong evaluation habits. https://aitrainers.jobs/jobs/devops-engineer-11cxh6https://aitrainers.jobs/jobs/devops-engineer-11cxh6Thu, 01 Oct 2026 22:52:05 GMTRemote work building infrastructure and CI/CD tasks with reference fixes, and reviewing AI-generated configurations for correctness and security. Suits DevOps and site reliability engineers with several years of hands-on experience. https://aitrainers.jobs/jobs/software-engineer-1sy95ihttps://aitrainers.jobs/jobs/software-engineer-1sy95iThu, 01 Oct 2026 21:19:11 GMTRemote role building coding tasks, writing reference solutions and automated tests, and judging AI-written code. Suits professional software engineers strong in Python and at least one other programming language. https://aitrainers.jobs/jobs/principal-coding-annotator-llm-evaluation-engineer-1j5qqjhttps://aitrainers.jobs/jobs/principal-coding-annotator-llm-evaluation-engineer-1j5qqjFri, 25 Sep 2026 19:54:13 GMTContract work for senior engineers writing benchmark-style coding tasks and grading LLM outputs on debugging, refactoring and security. Suits experienced practitioners who can explain why a model's code fails. https://aitrainers.jobs/jobs/open-source-contributor-github-16co0vhttps://aitrainers.jobs/jobs/open-source-contributor-github-16co0vWed, 16 Sep 2026 00:00:00 GMTFlexible remote work that explores real repositories, fixes bugs and writes tests to create and check coding tasks for AI. It suits engineers who own or meaningfully contribute to established open-source projects. https://aitrainers.jobs/jobs/sr-full-stack-software-engineer-1wwr08https://aitrainers.jobs/jobs/sr-full-stack-software-engineer-1wwr08Wed, 16 Sep 2026 00:00:00 GMTFlexible remote work that builds and debugs front-end and back-end code in unfamiliar repositories to create and evaluate AI coding tasks. It suits experienced full-stack engineers who are comfortable across the whole application stack. https://aitrainers.jobs/jobs/aws-trainium-nki-kernel-expert-tik23ahttps://aitrainers.jobs/jobs/aws-trainium-nki-kernel-expert-tik23aTue, 15 Sep 2026 14:04:45 GMTPart-time remote project work reviewing and writing Trainium kernels and CUDA-to-NKI migrations for AI evaluation. Suits kernel engineers with hands-on Trainium or Inferentia experience and solid knowledge of memory hierarchies. https://aitrainers.jobs/jobs/machine-learning-ml-ai-task-auditor-freelance-ai-trainer-project-1dtqxjhttps://aitrainers.jobs/jobs/machine-learning-ml-ai-task-auditor-freelance-ai-trainer-project-1dtqxjFri, 04 Sep 2026 19:28:29 GMTFreelance role for machine learning engineers to audit AI training tasks for technical accuracy, solvability and reproducibility. It suits practitioners with deep ML model-development and data-pipeline experience who give clear, actionable technical feedback. https://aitrainers.jobs/jobs/aws-serverless-iac-ai-task-auditor-freelance-ai-trainer-project-1hpdcehttps://aitrainers.jobs/jobs/aws-serverless-iac-ai-task-auditor-freelance-ai-trainer-project-1hpdceFri, 04 Sep 2026 19:27:07 GMTRemote auditing of AWS serverless and infrastructure-as-code tasks for technical accuracy, reproducibility and test quality. Suits cloud engineers with hands-on Lambda and Terraform or CloudFormation experience. https://aitrainers.jobs/jobs/ai-assisted-developer-workflows-trace-ai-task-auditor-freelance-ai-tra-6zvukdhttps://aitrainers.jobs/jobs/ai-assisted-developer-workflows-trace-ai-task-auditor-freelance-ai-tra-6zvukdFri, 04 Sep 2026 19:25:35 GMTRemote auditing of developer-workflow tasks, checking that AI coding assistant traces are accurate, solvable and reproducible. Suits engineers with deep knowledge of developer tooling and trace analysis. https://aitrainers.jobs/jobs/gpu-kernels-ai-task-auditor-freelance-ai-trainer-project-151sgahttps://aitrainers.jobs/jobs/gpu-kernels-ai-task-auditor-freelance-ai-trainer-project-151sgaFri, 04 Sep 2026 19:23:34 GMTAudit GPU kernel tasks for memory allocation bugs, execution bottlenecks and parallel-logic errors, confirming they are solvable and reproducible. Suits engineers with deep CUDA or Triton kernel development experience. https://aitrainers.jobs/jobs/aws-trainium-nki-trn-ai-task-auditor-freelance-ai-trainer-project-b79kb9https://aitrainers.jobs/jobs/aws-trainium-nki-trn-ai-task-auditor-freelance-ai-trainer-project-b79kb9Fri, 04 Sep 2026 19:21:38 GMTRemote auditing of AWS Trainium and NKI kernel tasks, checking technical accuracy and hardware efficiency issues. Suits engineers with deep hands-on experience in accelerator architecture and kernel development. https://aitrainers.jobs/jobs/swe-bench-ai-task-auditor-freelance-ai-trainer-project-a93ccmhttps://aitrainers.jobs/jobs/swe-bench-ai-task-auditor-freelance-ai-trainer-project-a93ccmFri, 04 Sep 2026 19:00:22 GMTSoftware engineers audit coding tasks used to train and test AI systems, checking that they are realistic, solvable and well tested. It suits experienced engineers who can navigate large codebases and give actionable feedback on failing tests. https://aitrainers.jobs/jobs/kubernetes-ai-task-auditor-freelance-ai-trainer-project-8n2leahttps://aitrainers.jobs/jobs/kubernetes-ai-task-auditor-freelance-ai-trainer-project-8n2leaFri, 04 Sep 2026 18:55:37 GMTAuditing Kubernetes tasks used to train AI for technical accuracy, solvability and test quality, with actionable feedback. Suits experienced Kubernetes engineers with strong analytical and troubleshooting skills. https://aitrainers.jobs/jobs/open-source-github-maintainer-i7yo6ihttps://aitrainers.jobs/jobs/open-source-github-maintainer-i7yo6iFri, 14 Aug 2026 00:00:00 GMTFlexible remote work assessing AI-generated code patches for a repository you maintain and writing justifications for each assessment. Suits senior software engineers with a public GitHub or GitLab record of maintaining open source projects. https://aitrainers.jobs/jobs/ai-trainer-electrical-engineers-cad-python-expertise-klktc0https://aitrainers.jobs/jobs/ai-trainer-electrical-engineers-cad-python-expertise-klktc0Fri, 31 Jul 2026 13:42:56 GMTProlific · 10 countries · Up to $120/hr https://aitrainers.jobs/jobs/3d-modeling-python-specialist-freelance-ai-trainer-project-b0dtruhttps://aitrainers.jobs/jobs/3d-modeling-python-specialist-freelance-ai-trainer-project-b0dtruMon, 04 May 2026 22:44:58 GMTRemote contract work writing Blender or Three.js scripts to build low-poly 3D meshes from reference images for AI training. Suits developers with 3D modeling and scripting skills who can work independently against strict quality checklists. https://aitrainers.jobs/jobs/java-coding-specialist-freelance-ai-trainer-project-1qjd08https://aitrainers.jobs/jobs/java-coding-specialist-freelance-ai-trainer-project-1qjd08Wed, 15 Apr 2026 12:48:26 GMTInvisible · Worldwide · $45/hr https://aitrainers.jobs/jobs/coding-data-and-automations-experts-12a8eshttps://aitrainers.jobs/jobs/coding-data-and-automations-experts-12a8esTue, 17 Mar 2026 18:38:12 GMTReviews real-world coding and data scenarios used to train AI assistants, spotting logic flaws and edge cases and upgrading weak tasks. Suits software engineers, data analysts and automation specialists who write and run code professionally. https://aitrainers.jobs/jobs/code-review-specialist-i9i415https://aitrainers.jobs/jobs/code-review-specialist-i9i415Tue, 03 Mar 2026 20:10:35 GMTReviewers evaluate AI-generated code for bugs, edge cases and readability, and suggest concrete improvements. Suits people who can read code in at least one language, from self-taught developers to experienced engineers. https://aitrainers.jobs/jobs/software-testing-analyst-c3d1qwhttps://aitrainers.jobs/jobs/software-testing-analyst-c3d1qwTue, 03 Mar 2026 20:10:35 GMTTesters run AI-generated code, look for bugs and edge cases, and document results in structured formats. Suits logical people who can read and run simple programs in at least one language. https://aitrainers.jobs/jobs/software-engineer-python-advanced-kbupe2https://aitrainers.jobs/jobs/software-engineer-python-advanced-kbupe2Tue, 03 Mar 2026 20:10:35 GMTExperienced Python engineers build and debug production-style code, analyse datasets and evaluate AI-generated code for correctness. Suits engineers and consultants who reason through open-ended technical problems and explain their thinking clearly. https://aitrainers.jobs/jobs/software-engineer-ruby-ruuh0rhttps://aitrainers.jobs/jobs/software-engineer-ruby-ruuh0rTue, 03 Mar 2026 20:10:35 GMTRuby engineers review backend code, build realistic software scenarios for AI training and assess AI-generated Ruby code for production readiness. Suits engineers comfortable in production codebases who explain technical decisions clearly. https://aitrainers.jobs/jobs/software-engineer-yaml-experience-18ov5mhttps://aitrainers.jobs/jobs/software-engineer-yaml-experience-18ov5mTue, 03 Mar 2026 20:10:35 GMTEngineers author, review and evaluate YAML configuration files and check AI-generated outputs for schema compliance and logical consistency. Suits detail-oriented engineers with hands-on production YAML experience. https://aitrainers.jobs/jobs/swe-infrastructure-specialist-java-freelance-ai-trainer-project-ru4ah2https://aitrainers.jobs/jobs/swe-infrastructure-specialist-java-freelance-ai-trainer-project-ru4ah2Fri, 26 Dec 2025 18:14:42 GMTJava infrastructure engineers test whether a model reasons correctly about concurrency, scalability and cloud deployment. It suits engineers with enterprise Java, cloud or SRE experience who can explain system behaviour clearly. https://aitrainers.jobs/jobs/swe-infrastructure-specialist-js-ts-python-freelance-ai-trainer-projec-vuwspmhttps://aitrainers.jobs/jobs/swe-infrastructure-specialist-js-ts-python-freelance-ai-trainer-projec-vuwspmFri, 26 Dec 2025 17:46:29 GMTInfrastructure engineers test a model's reasoning about cloud design, deployment workflows and performance tradeoffs in JavaScript, TypeScript and Python. It suits engineers with platform, DevOps or QA experience who explain tradeoffs clearly. https://aitrainers.jobs/jobs/kotlin-coding-specialist-freelance-ai-trainer-project-8sjp8khttps://aitrainers.jobs/jobs/kotlin-coding-specialist-freelance-ai-trainer-project-8sjp8kTue, 28 Oct 2025 15:22:09 GMTWriting and correcting Kotlin code patches for real-world Android engineering scenarios and evaluating AI-generated code. Suits experienced Android developers with production-level Kotlin and Jetpack experience. https://aitrainers.jobs/jobs/ai-model-training-specialist-bash-coding-expert-9mayklhttps://aitrainers.jobs/jobs/ai-model-training-specialist-bash-coding-expert-9mayklWed, 10 Sep 2025 16:20:59 GMTAnnotating and validating AI-generated content, and automating data processing tasks with Bash scripts. Suits people with strong Bash and command-line skills who also have an interest in data annotation. https://aitrainers.jobs/jobs/c-ai-training-specialist-1ni3rnhttps://aitrainers.jobs/jobs/c-ai-training-specialist-1ni3rnWed, 10 Sep 2025 16:20:08 GMTReviewing and validating AI-generated C++ and software content, and annotating data for model training. Suits C++ developers with an eye for quality assurance and an interest in AI training work. https://aitrainers.jobs/jobs/ai-training-specialist-html-coding-expert-cg03wnhttps://aitrainers.jobs/jobs/ai-training-specialist-html-coding-expert-cg03wnWed, 10 Sep 2025 16:20:48 GMTAnnotating and reviewing AI-generated content that involves HTML, and validating outputs for accuracy and relevance. Suits people with HTML coding skills and a computer science or data science background. https://aitrainers.jobs/jobs/ai-training-specialist-sql-data-expert-psaytjhttps://aitrainers.jobs/jobs/ai-training-specialist-sql-data-expert-psaytjWed, 10 Sep 2025 16:20:29 GMTUsing SQL to extract, manipulate and analyse datasets, and annotating data to train AI models. Suits people with solid SQL and database skills who want detail-focused annotation and validation work. https://aitrainers.jobs/jobs/ai-data-annotation-and-sql-specialist-zb8sq0https://aitrainers.jobs/jobs/ai-data-annotation-and-sql-specialist-zb8sq0Wed, 10 Sep 2025 16:20:19 GMTAnnotating and labelling data for AI training while using SQL to query and analyse datasets. Suits SQL-literate annotators who are comfortable working independently across several projects. https://aitrainers.jobs/jobs/c-ai-training-specialist-13aq85https://aitrainers.jobs/jobs/c-ai-training-specialist-13aq85Wed, 10 Sep 2025 16:19:56 GMTAnnotating data and validating AI-generated C++ content for accuracy and relevance across several training projects. Suits C++ programmers with an eye for detail who can work independently or in a team.