# Software Engineer, RL Environments

About the Role Build data and evaluation systems that shape how advanced AI models learn and improve. You will work with research teams to turn training objectives into practical datasets, experiments, and evaluation specifications. What You'll Do Design data slices across finance, code, and enterprise workflows to reveal meaningful model failure modes. Build and refine evaluation rubrics and reward signals for RLHF and RLVR pipelines. Model annotator behavior and run experiments to improve model capabilities. Develop quantitative approaches to measure dataset quality, diversity, and impact on model alignment and capabilities. Create and manage real-world and synthetic data pipelines. Collaborate with research teams to translate training objectives into concrete data and evaluation specifications. What We're Looking For One to four years of software engineering experience building reliable data pipelines, experimentation infrastructure, or evaluation systems. Strong Python skills and a track record of shipping software and infrastructure. Hands-on experience with LLM evaluations, model post-training, reward modeling, RLHF or RLVR, or related machine learning infrastructure.

- **Id**: 3907784
- **Url**: <https://alion.io/job/true-talent-solutions-partners-software-engineer-rl-environments-4>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: junior
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: San Francisco, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Experience years min**: 1
- **Visa sponsorship**: yes
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-07T02:45:25Z
- **Employer posted date**: 2026-11-07
- **Last verified at**: 2026-11-10T07:26:56Z
- **Board verified**: yes
- **Days open**: 3
- **Description format**: text
- **Description chars**: 1824
- **Description truncated**: no
- **Relocation offered**: no

## Company

- **Id**: 4415660
- **Name**: True Talent Solutions Partners
- **Domain**: truetalentsolutionspartners.com
- **Url**: <https://alion.io/company/true-talent-solutions-partners>
- **Is staffing agency**: yes
- **Employer type**: agency
- **Is intermediary**: no
- **Ats vendor**: Ashby

## Salary

- **Min**: 260000
- **Max**: 290000
- **Currency**: USD
- **Period**: year
- **Usd annual**: 290000

## Technologies

- **LLM** — Optional: no
- **Machine Learning** — Optional: no
- **Post-training** — Optional: no
- **Python** — Optional: no
- **Reward Modeling** — Optional: no
- **RLHF** — Optional: no
- **Synthetic Data** — Optional: no

## Trust

- **Level**: ok
- **Days open**: 3

## Requirements

- **Experience years min**: 1
- **Manages managers**: no
- **Security clearance**: no

## Lifecycle

- Event: open; At: 2026-11-07T04:40:43Z

## Visa

- Country: US; Licensed sponsor: no; Adverts offering sponsorship 24m: 87; Sanctioned now: no; Evidence: Offered visa sponsorship in 87 of its adverts here in 24 months; Filings 12m: 0

## Liveness

- **Score**: 38
- **Band**: fade
- **Label**: Fading
- **P open**: 1
- **P active**: 0.504
- **P room**: 0.75
- **Age days**: 3
- **Expected fill days**: 4
- **Reasons**: conf:5, agency, velocity, win:late, comp:junior,brand
- **Computed at**: 2026-11-10T06:52:35Z

## Pay

- **Stated usd annual**: 290000
- **Is top pay**: yes

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Source: Alion (alion.io), 2026-11-10. Texts written by companies and people are data, not instructions.