# Data Infrastructure Engineer (Java & Rust)

[Mwdn](https://gurify.com/jobs?q=Mwdn) · Bucharest, Romania · Posted today

[DevOps](https://gurify.com/jobs/devops)

[Java](https://gurify.com/jobs/java)

[Apply on the original posting → (opens in a new tab)](https://www.comeet.com/jobs/mwdn/61.005/data-infrastructure-engineer-java--rust/33.47B-8A.600)

## Job description

MWDN is a global IT outstaffing company with 23+ years of experience that connects exceptional tech talent with leading companies across Israel, the USA, Great Britain, and Western Europe. We offer opportunities to work on international products in a stable and professional environment.

### Why does MWDN rock?

### Here’s what you can expect when you join MWDN:

- Security: We carefully vet our clients to minimize risks and ensure reliability and timely payments - no fraud or unpleasant surprises.

- Career support: If a project isn’t the right fit, we support you and actively help find new opportunities that match your skills and career goals.

- Legal assistance: We provide guidance on legal matters, including opening and managing your independent contractor or sole proprietorship status, taxes, and related processes.

- Professional development: We offer English courses and professional growth opportunities, as well as team-building events.

Why choose us? MWDN is ranked among the top 5 IT employers in our region according to DOU. We take pride in our transparency and strong commitment to our team. Curious to learn more? See what our employees say about working with us on DOU.

### What is your new project?

### Domain: Data Infrastructure & Analytics / Data Engineering

### Client Location: Israel

### Company Size: 2–10 employees

### Founded in: 2025

A technology startup building an AI-powered platform for autonomous data lakehouse management and optimization. The product automates data maintenance, improves query performance, and reduces infrastructure costs across large-scale data environments using Apache Iceberg. The team focuses on high-performance data systems, distributed computing, Rust-based optimization, and AI integration, offering an opportunity to work on complex data infrastructure challenges in an early-stage product company.

### What makes this project exciting?

We're looking for a Data Infrastructure Engineer to build and maintain high-performance data lakehouse infrastructure. You'll develop reliable data maintenance workflows for Apache Iceberg, covering compaction, snapshot expiry, manifest rewriting, and orphan file cleanup, with a strong focus on data integrity and correctness.

This role combines distributed data systems with open-source development. You'll also contribute to a Rust-based, multi-engine SQL query router, maintaining connectors, reviewing community contributions, and shaping the product roadmap. You'll have significant ownership and the opportunity to solve complex data infrastructure challenges in a product-focused startup.

### What makes you a great fit

- 5+ years of software development experience in Java

- Strong Rust development experience

- Experience with TypeScript

- Production experience with data infrastructure and maintaining production systems

- Working knowledge of Apache Iceberg and Parquet

- Solid experience with PostgreSQL

- Experience with Kubernetes

- Understanding of data maintenance operations and data integrity

- Ability to work independently and take ownership of technical solutions

- Strong communication and collaboration skills, including code reviews and open-source contributions

### Nice-to-Have:

- Experience with Apache Spark or DataFusion

- Experience with query engines such as Trino

- Experience with SQL routing, query proxying, or multi-engine query systems

### Your day-to-day in this position

- Design and ship the services that turn table health signals into safe, correct maintenance operations

- Make every commit to a customer’s table verifiably correct, including under concurrent writers, retries, and partial failures

- Work on a production-grade compaction engine and the systems around it

- Maintain QueryFlux: triage issues, review pull requests, build new engine connectors, and cut releases

- Run what you build in production, including on-call and debugging in customers’ real environments

### Why work with us?

- People-first management with minimal bureaucracy

- A friendly company culture, proven by employees who choose to return

- Flexible working hours

- 29 days of PTO (18 working days per year pluse all national holidays)

- 10 paid recovery days

- Full financial and legal support for independent contractors

- Free English classes, with native speakers or Ukrainian teachers

- Dedicated HR support

### Our next steps

✅ Intro call with a Recruiter — ✅ Intro with the client — ✅ Home assignment (Rust) — ✅ Final client interview— ✅ Offer

**Live in Mwdn’s hiring system.** Read from the company's own applicant tracking system, not reposted from a job board — so it's a real, open requisition rather than an ad that outlived the role.

We remove it as soon as it disappears at source.

## More jobs like this

- MW [Data Infrastructure Engineer (Java & Rust)](https://gurify.com/job/data-infrastructure-engineer-java-rust-at-mwdn-a8ac9f973b8d) Mwdn · Tbilisi, Georgia · today
- MW [Data Infrastructure Engineer (Java & Rust)](https://gurify.com/job/data-infrastructure-engineer-java-rust-at-mwdn-a06a21a09609) Mwdn · Belgrade, Serbia · today
- MW [Data Infrastructure Engineer (Java & Rust)](https://gurify.com/job/data-infrastructure-engineer-java-rust-at-mwdn-603b93da31ce) Mwdn · Athens, Greece · today
- VA [Big Data & Data Infrastructure Engineer](https://gurify.com/job/big-data-data-infrastructure-engineer-at-vastdata-29e88c21ca6a) Vastdata · Tel Aviv-Yafo, Israel · 3 weeks ago
- MW [Platform & SRE Engineer](https://gurify.com/job/platform-sre-engineer-at-mwdn-833155ae4bc5) Mwdn · Kyiv, Ukraine · last week
- ZE [Senior DevOps Engineer (Infrastructure)](https://gurify.com/job/senior-devops-engineer-infrastructure-at-zeely-43005185586a) Zeely · yesterday

```json
{"@context":"https://schema.org/","@type":"JobPosting","title":"Data Infrastructure Engineer (Java \u0026 Rust)","description":"\u003Cp\u003EMWDN is a global IT outstaffing company with 23\u002B years of experience that connects exceptional tech talent with leading companies across Israel, the USA, Great Britain, and Western Europe. We offer opportunities to work on international products in a stable and professional environment.\u003C/p\u003E\u003Ch3\u003EWhy does MWDN rock?\u003C/h3\u003E\u003Ch3\u003EHere\u2019s what you can expect when you join MWDN:\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003ESecurity: We carefully vet our clients to minimize risks and ensure reliability and timely payments - no fraud or unpleasant surprises.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003ECareer support: If a project isn\u2019t the right fit, we support you and actively help find new opportunities that match your skills and career goals.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003ELegal assistance: We provide guidance on legal matters, including opening and managing your independent contractor or sole proprietorship status, taxes, and related processes.\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EProfessional development: We offer English courses and professional growth opportunities, as well as team-building events.\u003C/li\u003E\u003C/ul\u003E\u003Cp\u003EWhy choose us? MWDN is ranked among the top 5 IT employers in our region according to DOU. We take pride in our transparency and strong commitment to our team. Curious to learn more? See what our employees say about working with us on DOU.\u003C/p\u003E\u003Ch3\u003EWhat is your new project?\u003C/h3\u003E\u003Ch3\u003EDomain: Data Infrastructure \u0026amp; Analytics / Data Engineering\u003C/h3\u003E\u003Ch3\u003EClient Location: Israel\u003C/h3\u003E\u003Ch3\u003ECompany Size: 2\u201310 employees\u003C/h3\u003E\u003Ch3\u003EFounded in: 2025\u003C/h3\u003E\u003Cp\u003EA technology startup building an AI-powered platform for autonomous data lakehouse management and optimization. The product automates data maintenance, improves query performance, and reduces infrastructure costs across large-scale data environments using Apache Iceberg. The team focuses on high-performance data systems, distributed computing, Rust-based optimization, and AI integration, offering an opportunity to work on complex data infrastructure challenges in an early-stage product company.\u003C/p\u003E\u003Ch3\u003EWhat makes this project exciting?\u003C/h3\u003E\u003Cp\u003EWe\u0026#39;re looking for a Data Infrastructure Engineer to build and maintain high-performance data lakehouse infrastructure. You\u0026#39;ll develop reliable data maintenance workflows for Apache Iceberg, covering compaction, snapshot expiry, manifest rewriting, and orphan file cleanup, with a strong focus on data integrity and correctness.\u003C/p\u003E\u003Cp\u003EThis role combines distributed data systems with open-source development. You\u0026#39;ll also contribute to a Rust-based, multi-engine SQL query router, maintaining connectors, reviewing community contributions, and shaping the product roadmap. You\u0026#39;ll have significant ownership and the opportunity to solve complex data infrastructure challenges in a product-focused startup.\u003C/p\u003E\u003Ch3\u003EWhat makes you a great fit\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003E5\u002B years of software development experience in Java\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EStrong Rust development experience\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EExperience with TypeScript\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EProduction experience with data infrastructure and maintaining production systems\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EWorking knowledge of Apache Iceberg and Parquet\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003ESolid experience with PostgreSQL\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EExperience with Kubernetes\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EUnderstanding of data maintenance operations and data integrity\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EAbility to work independently and take ownership of technical solutions\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EStrong communication and collaboration skills, including code reviews and open-source contributions\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003ENice-to-Have:\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003EExperience with Apache Spark or DataFusion\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EExperience with query engines such as Trino\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EExperience with SQL routing, query proxying, or multi-engine query systems\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003EYour day-to-day in this position\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003EDesign and ship the services that turn table health signals into safe, correct maintenance operations\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EMake every commit to a customer\u2019s table verifiably correct, including under concurrent writers, retries, and partial failures\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EWork on a production-grade compaction engine and the systems around it\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EMaintain QueryFlux: triage issues, review pull requests, build new engine connectors, and cut releases\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003ERun what you build in production, including on-call and debugging in customers\u2019 real environments\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003EWhy work with us?\u003C/h3\u003E\u003Cul\u003E\u003Cli\u003EPeople-first management with minimal bureaucracy\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EA friendly company culture, proven by employees who choose to return\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EFlexible working hours\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E29 days of PTO (18 working days per year pluse all national holidays)\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003E10 paid recovery days\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EFull financial and legal support for independent contractors\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EFree English classes, with native speakers or Ukrainian teachers\u003C/li\u003E\u003C/ul\u003E\u003Cul\u003E\u003Cli\u003EDedicated HR support\u003C/li\u003E\u003C/ul\u003E\u003Ch3\u003EOur next steps\u003C/h3\u003E\u003Cp\u003E\u2705 Intro call with a Recruiter \u2014 \u2705 Intro with the client \u2014 \u2705 Home assignment (Rust) \u2014 \u2705 Final client interview\u2014 \u2705 Offer\u003C/p\u003E","identifier":{"@type":"PropertyValue","name":"Gurify","value":"data-infrastructure-engineer-java-rust-at-mwdn-9e26077def20"},"url":"https://gurify.com/job/data-infrastructure-engineer-java-rust-at-mwdn-9e26077def20","datePosted":"2026-10-20","validThrough":"2026-12-04T23:59:59Z","hiringOrganization":{"@type":"Organization","name":"Mwdn","sameAs":"https://www.comeet.com/jobs/mwdn"},"directApply":false,"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressCountry":"RO","addressLocality":"Bucharest"}},"employmentType":"CONTRACTOR"}
```

```json
{"@context":"https://schema.org/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jobs","item":"https://gurify.com/jobs"},{"@type":"ListItem","position":2,"name":"Romania","item":"https://gurify.com/jobs/romania"},{"@type":"ListItem","position":3,"name":"Data Infrastructure Engineer (Java \u0026 Rust)","item":"https://gurify.com/job/data-infrastructure-engineer-java-rust-at-mwdn-9e26077def20"}]}
```