Senior ML Ops Engineer

Contractor

164 days ago

Warsaw - Poland, United Kingdom, Croatia

Remote Senior ML Ops Engineer role focused on maintaining and extending data/ML workflows and platforms that handle high-velocity, large-scale data. Requires minimum 3 years in a data role (data stores, feature engineering, pipelines) and at least 2 years of professional software development experience; key technologies include Python, Kafka, SQL/NoSQL (ClickHouse), cloud (AWS/Azure), Kubernetes and CI/CD.

Senior/Lead ML Applied Scientist

Contractor

164 days ago

Poland, Canada, Italy, Romania, Croatia

Design and implement ML models that scale to millions of requests per second, translate business requirements into technical specifications, evaluate and debug models, and provide technical mentorship. Role combines research, engineering, and deployment work in a fully remote, flexible-hours environment. Requires 5+ years professional applied ML experience and experience with real-time, incremental, and online learning.

Senior Frontend Engineer

Contractor

164 days ago

Argentina, Buenos Aires, Buenos Aires

Intuition Machines seeks a Senior Frontend Engineer to design, develop, deploy, and operate secure, scalable front-end web, mobile, and customer-facing solutions. Responsibilities include writing maintainable, well-documented, and tested code (suitable for open source), participating in code reviews, unit testing, automation, and on-call rotation, and mentoring peers. Requires 4+ years of hands-on experience, strong JavaScript and React knowledge, solution architecture experience, and good communication skills. Interview process includes familiarity with AI coding agents; all hires require pre-employment screening and final in-person identity verification in the candidate's country of residence.

Senior Cyber Security Analyst - EMEA

Contractor

164 days ago

Poland, Romania, Austria, Croatia, Czechia

Intuition Machines seeks a Senior Cyber Security Analyst to monitor and investigate automated and human threats across the hCaptcha platform. Responsibilities include advanced investigations, threat hunting, incident response, auditing security measures, contributing to AI/ML detection improvements, and collaborating with product and customer teams. Required skills include web/API security, WAFs, SQL, Kubernetes, scripting (Python/JavaScript), and deep understanding of web application threat landscape. Role is fully remote with flexible hours and requires pre-employment screening and identity verification in the candidate's country of residence.

Senior Cyber Security Analyst - APAC

Contractor

164 days ago

Philippines, Metro Manila, Manila

Lead investigations into automated and human threats on a large-scale SaaS security platform: monitor and analyze events, conduct threat hunting and incident response, and improve AI/ML detection. Requires hands-on SQL, familiarity with web/API security and WAFs, experience with Kubernetes and scripting (Python, JavaScript), and collaboration across distributed teams. Position is fully remote with flexible hours.

Senior Backend Engineer, Detection

Other

164 days ago

Argentina, Buenos Aires, Buenos Aires

Join the Detection team to develop, support, and maintain core hCaptcha application tools and services that detect and verify user events. Responsibilities include designing low-latency, high-availability features, writing tested maintainable code, practicing DevSecOps (security, monitoring, automation), participating on-call, and collaborating with Security and Machine Learning engineers and customer-facing teams. Position is fully remote; role lists Argentina (Buenos Aires) as the location. Pre-employment screening and identity verification are required.

Senior Backend Engineer

Other

164 days ago

Brazil, Argentina

Work on core production backend code including distributed systems and ML paths. Responsibilities include designing, building, and maintaining backend services, implementing DevSecOps practices, monitoring and tracing, writing production-quality code with tests, and participating in code reviews and on-call rotations. Requires a minimum of 5 years' hands-on experience and expertise in Python plus at least one of Golang, Rust, or C++.

Security Software Engineer

Other

164 days ago

Brazil, Argentina

Intuition Machines is hiring a remote Security Software Engineer (candidates in Brazil and Argentina explicitly referenced). The role centers on systems programming and compiler development to advance detection/prevention of malicious activity, including work on obfuscation, virtual machines, cryptography, browser automation, HTTP/Web APIs and WASM. Responsibilities include development, monitoring, fault handling, metrics, automation, and deploying continuous updates. Candidates should have hands-on experience or demonstrated expertise; pre-employment screening and an in-person interview/identity verification in the candidate's country of residence are required.

Sales Engineer

Other

164 days ago

Canada, United States

Own technical sales engagements and act as technical owner through sales, onboarding, and implementation. Translate customer requirements into actionable development outcomes, advise on implementation strategies, and partner with product teams on solution architectures. Requires 3+ years in a similar SaaS role, developer skills with APIs and front-end technologies (JavaScript, React), and fluency in English; security domain experience is preferred.

Lead ML Engineer

Contractor

164 days ago

Kraków - Poland, Romania, Austria, Croatia

Lead and architect large-scale, production ML projects from design through deployment and maintenance. Require 7+ years building and maintaining production ML systems with focus on scalability, performance, reliability, and leadership. Familiarity with Kubernetes, containerization, distributed systems, and experience mentoring other ML engineers. Positions listed for Poland, Romania, Austria, and Croatia; role is fully remote with flexible hours.

Machine Learning Manager, Security & Research

Other

164 days ago

Buenos Aires, Wrocław - Argentina, Poland, Canada, Czechia, Croatia

The role leads the ML Security team responsible for bot, agent, and human fraud/abuse detection, owning execution of roadmaps, architectural and technical decisions, code reviews, mentoring, and delivery from data exploration through production deployment and monitoring. Required: strong ML/data science or engineering background with production ML experience, engineering management or tech lead experience, expertise in high-availability and distributed systems, Python, ML pipelines, MLOps, and strong cross-functional communication. Position is fully remote with flexible hours; all candidates will undergo pre-employment screening and identity verification in their country of residence.

Director of Engineering

Contractor

164 days ago

Warsaw, Toronto, Buenos Aires - Poland, Canada, United Kingdom, Argentina

The Director of Engineering will recruit, lead, and manage technical teams to deliver online security and ML products at scale, owning architecture, quality, availability, observability, and automation. The role requires a minimum of 5 years leading teams of 20–60 engineers and strong hands-on experience with distributed systems, high-availability development, security, and languages including Python, NodeJS, and Go or Rust.

Cyber Security Analyst - Americas

Contractor

164 days ago

Buenos Aires - Argentina, Brazil, Colombia

Intuition Machines is hiring a remote Cyber Security Analyst to monitor and investigate automated and human threats within its hCaptcha SaaS platform. Responsibilities include threat hunting, incident response, web/API security analysis, and collaborating with global teams to improve AI/ML detection and security processes. Required skills include SQL, experience with web and API security, familiarity with Kubernetes, and scripting in languages such as Python and JavaScript.

2026 AI/ML Research Fellow

Other

164 days ago

Worldwide

10 fellowship places for 2026 offering 6- or 12-month remote terms (candidate may reside anywhere except sanctioned jurisdictions). Fellows spend ~80% on their own research, receive compute, weekly 1:1 mentorship, and a location-adjusted stipend; deliverables typically include 1–2 papers or a final report. Application materials requested; deadlines April 1 and September 1, 2026.

Freelance Senior Web Engineer

Contractor

164 days ago

United Kingdom

Human Made seeks a freelance Senior Web Engineer to join its distributed team remotely. The role requires deep WordPress knowledge (internals and ecosystem), strong PHP and JavaScript skills, experience with REST APIs, Git, MySQL, debugging, performance and security, and the ability to architect complex subsystems and contribute to team activities.

Freelance Scrum Master

Contractor

164 days ago

Worldwide

Human Made seeks a freelance Scrum Master to join its remote talent pool. The role involves applying Scrum and agile practices to create high-performing teams, facilitating workshops and meetings, removing impediments, managing project scope and budgets, and engaging with stakeholders. Applicants must be proficient in English and have experience with agile frameworks, facilitation, project management tools, and a broad understanding of web technologies (HTML, CSS, JavaScript, CMS, version control).

Site Reliability Engineer

Other

164 days ago

Canada

Remote-first Site Reliability Engineer role focused on maintaining and improving Tyk Cloud within SLAs, operating production-scale Kubernetes clusters and multi-cloud infrastructure (AWS/EKS), building metrics and dashboards (Prometheus/Grafana), participating in on-call rotation, conducting post-incident analysis, automating operational tasks, documenting SRE processes and assisting with penetration testing and cost/efficiency improvements.

Site Reliability Engineer - APAC

Full-time

164 days ago

Remote - India, Malaysia, Hong Kong SAR China - UTC

Tyk seeks a Site Reliability Engineer to maintain, monitor and improve the global Tyk Cloud platform, participate in on-call incident management, expand multi-region/multi-cloud reach, automate operations, and document SRE processes. Core responsibilities include operating Kubernetes clusters, AWS and other cloud infrastructure, databases (MongoDB/Redis), monitoring (Prometheus/Grafana), logging systems, and driving reliability and cost-efficiency.

General Interest

Full-time

164 days ago

United States

Crowd Favorite invites candidates who believe they can contribute but do not see a listed role to submit a resume/CV and cover letter explaining their ideal position. Requirements include 3–5 years of digital agency experience, knowledge of various digital platforms, a basic understanding of coding, a writing sample or portfolio, and a strong home office with reliable internet. For US full-time employees the company describes benefits including tiered United Healthcare options with employer contribution, dental, vision, life insurance, telemedicine, a 401(k) with up to 4% match, permissive time-off and family leave policies, and provision of company hardware and tools for work.

Senior PostgreSQL Database Engineer - EMEA (Remote)

Full-time

164 days ago

Remote - Warsaw, Bucharest, Berlin - Poland, Romania, Germany, Ireland, Brazil

Senior PostgreSQL Database Engineer (remote/EMEA and listed cities). Provide expert support to customers on complex PostgreSQL issues, perform investigations and live troubleshooting, contribute documentation and community content, and work with Kubernetes, Linux, cloud services (AWS/Azure/GCP), and related Postgres tooling. Role requires deep PostgreSQL expertise and fluent English.