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Synthires

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29 jobs
Synthires
3 views last week

Senior Backend Engineer - AI Tasking & Verifiers

New APACSenior
Singapore

Synthires is hiring a Senior Backend Engineer in Singapore to craft realistic coding tasks and deterministic verifiers used to evaluate solutions, with no prior AI experience required. Day-to-day work centers on backend development across multiple languages, plus debugging, testing, refactoring, scalable services, and rigorous code review.
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Synthires
5 views 3 weeks ago

Agentic AI Engineer for Model-Based Design Tools

On-siteEurope
Italy

Synthires is seeking an Agentic AI Expert to join its R&D team, developing next-gen Model-Based Engineering tools. The role combines AI, software engineering and MBD, with a focus on integrating agentic AI into…

Agentic AI AI Java LLM Python +2 skills
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Synthires
13 views 3 weeks ago

Machine Learning Research Scientist (Remote | $140–$150/hr)

Open 15d RemoteUKContract
United Kingdom

Design benchmark tasks and evaluation methodologies for frontier AI systems, authoring problem sets and reviewing model outputs across domains like Deep Learning and Reinforcement Learning. This remote contract role involves creating grading rubrics and reference solutions to measure real-world AI capabilities.

AI Causal Inference Computer Vision Deep Learning Generative AI +5 skills
140 – 150 $ / hr
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Synthires
5 views 3 weeks ago

Security Software Engineer - Backend (Remote | $30-$100/hr)

Open 16d APACContract
India

Contractor role (~15 hrs/week) for backend engineers with security expertise: design realistic coding tasks and deterministic verifiers used to train next-generation AI models. Work spans backend services and APIs in Java, Node.js, Go, Rust, TypeScript, Python, and C++, plus debugging, testing, and secure coding. Paid $30–$100/hour, output-based.

AI API C++ Cybersecurity Java +8 skills
30 – 100 $ / hr
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Synthires
9 views 3 weeks ago

Senior Software Engineer (Remote | $100–$150/hr)

Open 18d EuropeContractSenior
Portugal

Contract senior software engineer (~15 hrs/week) building reinforcement-learning environments, tasks, and golden reference solutions used to evaluate and train next-generation AI models on real software engineering problems. Requires deep hands-on skills in at least one of Python, Java, Rust, Go, C++, or TypeScript; prior AI experience is not required.

AI C++ Java Machine Learning Model Evaluation +3 skills
100 – 150 $ / hr
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Synthires
7 views 3 weeks ago

Security Software Engineer – Backend (Remote | $30–$100/hr)

Open 18d APACContract
India

Contract backend security engineer (~15 hrs/week, output-based pay) who designs realistic coding tasks and deterministic verifiers used to train AI models on backend engineering and security problems. Day-to-day work spans backend development, secure coding, debugging, testing, and code review across languages like Java, Node.js, Go, Rust, TypeScript, Python, and C++.

AI API C++ Cybersecurity Java +8 skills
30 – 100 $ / hr
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Synthires
10 views 4 weeks ago

Data Scientist (Remote | $245–$280/hr)

Open 21d RemoteUKContract
United Kingdom

Fully remote contractor role ($245–$280/hr) evaluating AI-generated outputs on expert data science, statistics, machine learning, and quantitative reasoning problems for an AI lab. Day to day: writing expert prompts and datasets, building reference solutions, spotting statistical flaws, and giving structured feedback to improve model performance.

AI Data Modeling Data Science Machine Learning pandas +2 skills
245 – 280 $ / hr
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Synthires
9 views 4 weeks ago

Senior Software Engineer (Remote | $50–$100/hr)

Open 22d EuropePart-timeSenior
Portugal

Part-time contractor role (~15 hrs/week) building Reinforcement Learning environments and golden reference solutions that evaluate AI models on real-world software engineering tasks like bug fixing, feature implementation, refactoring, and performance optimization. Requires deep expertise in at least one of Python, Java, Rust, Go, C++, or TypeScript; no prior AI experience needed.

AI C++ Java Python Reinforcement Learning +2 skills
50 – 100 $ / hr
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Synthires
7 views last month

Frontend Software Engineer (Remote | Up to $90/hr)

Open 36d EuropeContract

Frontend Engineer Position: Frontend Engineer Type: Freelance Hourly Contract Compensation: $90/hour Location: Remote About the Opportunity This opportunity is for experienced Frontend Engineers and Full-Stack…

Accessibility AI CSS Data Science DevOps +6 skills
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