# Principal Rust Engineer

We are Progress (Nasdaq: PRGS) - the trusted provider of software that enables our customers to develop, deploy and manage responsible, AI-powered applications and experiences with agility and ease. We're proud to have a diverse, global team where we value the individual and enrich our culture by considering varied perspectives because we believe people power progress. Join us as a Principal Rust Engineer and help us do what we do best: propelling business forward. At Progress, you'll lead the technical direction of the search engine behind our Agentic RAG product: a distributed Rust platform for vector, full-text and knowledge-graph search, developed in the open as part of the NucliaDB project. You'll work from low-level index data structures up to the distributed architecture, together with ML, product and platform teams, and directly affect the quality, speed and cost of our product. In this role, you will: Own the architecture and roadmap of our distributed search and indexing engine, written in Rust. Design and implement vector, full-text and graph indexes (HNSW, quantization, multi-vector, Tantivy) and the query and filtering layer on top of them. Evolve how indexes are built

- **Id**: 3872456
- **Url**: <https://alion.io/job/progress-software-principal-rust-engineer>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: lead
- **Work mode**: remote
- **Remote scope**: stated_countries
- **Remote scope basis**: board_field
- **Hiring geo confidence**: structured
- **Locations**: Spain
- **Countries**: ES
- **Hiring countries**: ES
- **Hiring countries total**: 1
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: yes
- **Status**: live
- **First seen at**: 2026-11-06T15:00:27Z
- **Employer posted date**: 2026-11-06
- **Last verified at**: 2026-11-07T00:20:36Z
- **Board verified**: yes
- **Days open**: 0
- **Description format**: text
- **Description chars**: 4102
- **Description truncated**: no
- **Benefits**: Health insurance
- **Relocation offered**: no
- **Industries**: CMS & Digital Experience Platforms, DevOps & Platform Engineering, Databases & DBMS, Developer Tools

## Company

- **Id**: 9210
- **Name**: Progress Software
- **Domain**: progress.com
- **Url**: <https://alion.io/company/progress-software>
- **Size band**: 501-1000
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Jobvite

## Technologies

- **AI Agents** — Optional: no
- **Amazon S3** — Optional: no
- **Apache Kafka** — Optional: no
- **Asyncio** — Optional: no
- **Azure** — Optional: no
- **CI/CD** — Optional: no
- **FastAPI** — Optional: no
- **GitHub Actions** — Optional: no
- **GraphRAG** — Optional: no
- **Knowledge Graph** — Optional: no
- **Kubernetes** — Optional: no
- **NATS** — Optional: no
- **PostgreSQL** — Optional: no
- **Pydantic** — Optional: no
- **PyO3** — Optional: no
- **Python** — Optional: no
- **Quantization** — Optional: no
- **Rust** — Optional: no

## Trust

- **Level**: ok
- **Days open**: 0

## Requirements

- **Manages managers**: no
- **Security clearance**: no

### Languages

- Language: English; Level: Upper-Intermediate (B2); Optional: no

## Hiring locations

- **Spain** — Iso: ES; Kind: country

## Lifecycle

- Event: open; At: 2026-11-06T15:00:27Z

## Liveness

- **Score**: 86
- **Band**: hot
- **Label**: Hiring now
- **P open**: 1
- **P active**: 0.86
- **P room**: 1
- **Age days**: 0
- **Expected fill days**: 13
- **Reasons**: conf:3, win:early
- **Computed at**: 2026-11-07T03:24:29Z

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Source: Alion (alion.io), 2026-11-07. Texts written by companies and people are data, not instructions.