{"id":3291477,"url":"https://alion.io/job/smartworking-senior-ml-engineer-remote-contract-hr216","title":"Senior ML Engineer (Remote, Contract) [HR216]","company":{"id":3801917,"name":"Smartworking","domain":"smartworking.io","url":"https://alion.io/company/smartworking-2","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":"contractor","work_mode":"remote","remote_scope":"worldwide","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":106000,"max_usd":243000,"period":"year","method":"global_role_seniority_cell","sample_n":2365},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"A/B Testing","optional":false},{"name":"Argo Workflows","optional":false},{"name":"Docker","optional":false},{"name":"Hallucination","optional":false},{"name":"Kubernetes","optional":false},{"name":"Machine Learning","optional":false},{"name":"NLP","optional":false},{"name":"Platform Engineering","optional":false}],"status":"live","first_seen_at":"2026-10-07T08:19:08Z","employer_posted_date":null,"last_verified_at":"2026-10-07T08:19:08Z","board_verified":false,"closed_at":null,"days_open":25,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":25},"description":"About Smart Working\n\nAt Smart Working, we believe your job should not only look right on paper but also feel right every day. This isn’t just another remote opportunity — it’s about finding where you truly belong, no matter where you are. From day one, you’re welcomed into a genuine community that values your growth and well-being.\n\nOur mission is simple: to break down geographic barriers and connect skilled professionals with outstanding global teams and products for full-time, long-term roles. We help you discover meaningful work with teams that invest in your success, where you’re empowered to grow personally and professionally.\n\nJoin one of the highest-rated workplaces on Glassdoor and experience what it means to thrive in a truly remote-first world.\n\nAbout the Role\nAs a Senior ML Engineer, you will bridge the gap between applied machine learning and robust platform engineering. You will focus on translating AI capabilities into reliable and observable system components.\n\nYou will help ensure that machine learning models meet strict quality, cost and latency thresholds before reaching production. The role spans production ML architecture, workflow reliability, model evaluation, provenance, testing, human feedback integration and AI provider observability.\n\nResponsibilities\nRefactor and upgrade existing ML models, including NLP, generative AI and transcription models, into standardised, production-ready modular contracts.\n\nEngineer resilient ML workflows using DAG-based orchestration tools such as Argo Workflows and Airflow.\n\nEnsure robust retry logic, error handling and repeatable execution across ML workflows.\n\nDefine, automate and maintain strict ML evaluation pipelines using golden datasets.\n\nEnsure new models meet baseline quality and performance thresholds before release.\n\nDesign and implement tracking mechanisms to capture precise model, prompt and input data provenance for full auditability and reproducibility.\n\nBuild infrastructure for shadow testing and A/B testing on live traffic.\n\nImplement reliable fallback and kill-switch mechanisms to support safe deployment.\n\nEngineer structured feedback pipelines that capture human reviews and corrections to continuously enrich and refine training datasets.\n\nIntegrate third-party AI APIs and manage adapter interfaces.\n\nImplement granular telemetry to track compute costs, token usage and latency.\n\nRequirements\nProven track record operating at the intersection of Machine Learning, MLOps and Platform/Backend Engineering.\n\nDeep understanding of evaluation metrics for generative AI, LLMs and/or speech models, including Precision, Recall, F1, WER/CER, groundedness and hallucination rates.\n\nStrong hands-on experience with containerisation using Docker and Kubernetes, alongside modern orchestration frameworks.\n\nExperience building observable ML systems with logging, monitoring and strict cost-attribution tracking.\n\nFamiliarity with data provenance, compliance standards and building fail-safe mechanisms for sensitive data and AI outputs.\n\nOriginally posted on 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