Andres Codas
Andres Codas is a Microsoft research software engineer whose publications span neural simulation, code generation, and language-model training. He earned an Engineering Cybernetics PhD at the Norwegian University of Science and Technology in 2016 and coauthored a 2019 IBM Research paper on neural proxies for oil-reservoir simulation. His 2022 CodeRanker paper addressed code correctness; Orca 2 in 2023 explored small-model reasoning, and AgentInstruct in 2024 introduced synthetic training data. As of October 2026, he is a Senior Research Software Engineer on the Research at Redmond Data Science team at Microsoft Research.
- Now at
- Microsoft Research
- Works
- 38
- Citations
- 306
- h-index
- 10
- Badges
Publication numbers from OpenAlex, as of 18 October 2026.
Timeline
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2016
An Engineering Cybernetics PhD
He earns a PhD in Engineering Cybernetics at the Norwegian University of Science and Technology in 2016. During his education, he conducts applied research in control engineering and optimization in the physics-AI domain.
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2019
Neural proxies for oil reservoirs
In 2019, he coauthors a neural-network proxy study of oil-reservoir simulation at IBM Research. The paper reports a practical speedup of more than 2,000 times over the simulator.
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Since 2021
Microsoft language-model workflows
He joins Microsoft in 2021 and develops workflows for collecting and wrangling data to train and evaluate large language models.
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2022
Fault-aware neural code rankers
In 2022, he coauthors Fault-Aware Neural Code Rankers, which introduces CodeRanker, a neural ranker that predicts sampled program correctness without executing it.
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2023
Orca 2 reasoning models
In 2023, he coauthors Orca-2: Teaching Small Language Models How to Reason, a Microsoft Research paper about small-model reasoning.
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2024
AgentInstruct training data
In 2024, he coauthors AgentInstruct, an agentic framework for creating synthetic training data. The work creates a 25-million-pair dataset to teach language models skills such as tool use, coding, and reading comprehension.
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As of October 2026
Senior Research Software Engineer
As of October 2026, he is a Senior Research Software Engineer on Microsoft's Research at Redmond Data Science team.
Career
- NowMicrosoft ResearchSenior Research Software Engineer
- 2022–2024Microsoft
- 2017–2021IBM
- 2017–2021IBM Research - Thomas J. Watson Research Center
- 2008–2012Universidade Federal de Santa Catarina
Education
Most-cited works
- Integrated production optimization of oil fields with pressure and routing constraints: The Urucu field
- Mixed-integer linear optimization for optimal lift-gas allocation with well-separator routing
- Orca 2: Teaching Small Language Models How to ReasonWith Ahmed Awadallah and Anastasia Razdaibiedina
- Fault-Aware Neural Code RankersWith Jianfeng Gao
- Closed-Loop Predictions in Reservoir Management Under Uncertainty
Sources and credits
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