{"id":3297289,"url":"https://alion.io/job/spark-hire-recruit-data-infrastructure-engineer-java-rust-8","title":"Data Infrastructure Engineer (Java & Rust)","company":{"id":1764008,"name":"Comeet","domain":"comeet.com","url":"https://alion.io/company/comeet-com","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Comeet","truth_index":null},"role":"Data Science","role_family":"Data Science","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Sofia, Bulgaria"],"countries":["BG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":31000,"max_usd":82000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2679},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache Iceberg","optional":false},{"name":"Java","optional":false},{"name":"Kubernetes","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Rust","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"Spark","optional":true},{"name":"Trino","optional":true}],"status":"live","first_seen_at":"2026-10-20T19:37:52Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-10-27T20:55:26Z","board_verified":true,"closed_at":null,"days_open":7,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":7},"description":"Description\nMWDN 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.\nWhy does MWDN rock?\nHere’s what you can expect when you join MWDN:\nSecurity: We carefully vet our clients to minimize risks and ensure reliability and timely payments - no fraud or unpleasant surprises.\nCareer 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.\nLegal assistance: We provide guidance on legal matters, including opening and managing your independent contractor or sole proprietorship status, taxes, and related processes.\nProfessional development: We offer English courses and professional growth opportunities, as well as team-building events.\nWhy 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.\nWhat is your new project?\nDomain: Data Infrastructure & Analytics / Data Engineering\nClient Location: Israel\nCompany Size: 2-10 employees\nFounded in: 2025\nA 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.\nWhat makes this project exciting?\nWe'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.\nThis 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.\nWhat makes you a great fit\n5+ years of software development experience in Java\nStrong Rust development experience\nExperience with TypeScript\nProduction experience with data infrastructure and maintaining production systems\nWorking knowledge of Apache Iceberg and Parquet\nSolid experience with PostgreSQL\nExperience with Kubernetes\nUnderstanding of data maintenance operations and data integrity\nAbility to work independently and take ownership of technical solutions\nStrong communication and collaboration skills, including code reviews and open-source contributions\nNice-to-Have:\nExperience with Apache Spark or DataFusion\nExperience with query engines such as Trino\nExperience with SQL routing, query proxying, or multi-engine query systems\nYour day-to-day in this position\nDesign and ship the services that turn table health signals into safe, correct maintenance operations\nMake every commit to a customer’s table verifiably correct, including under concurrent writers, retries, and partial failures\nWork on a production-grade compaction engine and the systems around it\nMaintain QueryFlux: triage issues, review pull requests, build new engine connectors, and cut releases\nRun what you build in production, including on-call and debugging in customers’ real environments\nWhy work with us?\nPeople-first management with minimal bureaucracy\nA friendly company culture, proven by employees who choose to return\nFlexible working hours\n29 days of PTO (18 working days per year pluse all national holidays)\n10 paid recovery days\nFull financial and legal support for independent contractors\nFree English classes, with native speakers or Ukrainian teachers\nDedicated HR support\nOur next steps\nIntro call with a Recruiter - 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