2051 English-speaking jobs in Vienna

Keyrock seeks a Trading Operations Specialist to manage digital asset and fiat trade settlements, reconcile trades, and liaise with trading, treasury, and finance teams. The role requires 3+ years of experience in trading operations, a minimum Bachelor's degree in a quantitative field, and strong attention to detail.

Keyrock seeks an experienced Infrastructure Engineer to design, implement, and maintain blockchain node infrastructure. Responsibilities include managing diverse blockchain nodes, utilizing IaC tools, ensuring observability and performance, and collaborating with trading and research teams.

Designs, implements, and maintains IT infrastructure to support business operations and growth. Ensures infrastructure security, compliance, and scalability. Collaborates with teams to integrate infrastructure with overall IT strategy.

Rust or C++ Engineer to join a remote team building a low latency options trading system. Experience with scalable systems architecture, low latency trading, and PostgreSQL databases is required. Must be willing to become proficient in Rust if not already.

Keyrock seeks a Senior Repo & Lending Trader to execute and manage bilateral and on-chain borrowing activities. Responsibilities include structuring fixed and floating rate loans, optimizing collateral efficiency, and managing institutional lending relationships. The ideal candidate will have 4-7 years of experience in repo, securities lending, or STIR desks, strong Python skills, and a deep understanding of secured financing mechanics.

The Tech Lead is a hybrid role combining hands-on engineering, architectural leadership, and team enablement. This role drives the implementation and delivery of engineering initiatives within the Service Market Making Business Unit, ensuring technical execution and delivery quality. The Tech Lead balances strategic thinking with pragmatic delivery, contributing to code, guiding the team, and aligning execution with long-term goals.

Supports monthly, quarterly, and yearly close processes, prepares financial reports, and performs reconciliations. Validates product-level revenues and investigates discrepancies. Collects, analyzes, and challenges revenue and cost data. Improves financial transparency and process efficiency.

Innovation Researcher to identify, develop, and prototype new innovations in the digital asset space. Evaluate Web3.0 primitives and conduct technology due diligence. Build and maintain systems, aligning with Keyrock's team to ensure compatibility and synergies.

Rust or C++ Engineer to join a remote team building a low latency options trading system. Experience with scalable systems architecture, low latency trading, and PostgreSQL databases is required. Must be willing to become proficient in Rust if not already.

This role focuses on the discovery, design, and delivery of high-frequency trading systems. The Product Manager will drive the product strategy for HFT systems, ensuring sub-millisecond latency and near-perfect uptime while balancing performance goals with risk management and regulatory compliance.

Designs, implements, and maintains IT infrastructure to support business operations and growth. Ensures infrastructure security, compliance, and scalability. Collaborates with teams to integrate infrastructure with overall IT strategy.

Keyrock seeks a Product Marketer (DeFi) to lead on-chain marketing efforts for DeFi products. Responsibilities include product positioning, messaging, and narrative development, driving ecosystem awareness and adoption, and executing growth initiatives. The ideal candidate has 6+ years of marketing experience, with at least 3+ years in DeFi, a proven track record of product launches, and experience with B2C growth and B2B partnerships.

Quantitative Researcher to develop and implement trading strategies, conduct market research, and build proprietary algorithms for high- and mid-frequency trading.

Leads the strategic direction and operational excellence of the firm's trading data ecosystem. Defines and executes a data strategy focused on trading and market data, ensuring accuracy, timeliness, and integrity. Builds and manages trading or financial data platforms. Collaborates with Architecture Team to build a robust and compliant data architecture. Drives the organization's data excellence agenda, embedding reliability and observability across the data platform. Leads the implementation and evolution of cloud-native data platforms. Enforces and maintains robust data governance across the full lifecycle. Builds, leads, and mentors a high-performing Central Data Team. Partners with Engineering, Architecture, Quant Research, Risk, and Finance to deliver unified, trusted, and scalable data solutions.

Performs trading operations based on given strategies, analyzes market trends, and collaborates with professionals to improve processes.

Responsible for installation, deployment, and optimization of large-scale search services including MySQL, Redis, TiDB, and Doris. Builds TB-level databases, caches, and PB-level data warehouses. Designs and implements disaster recovery solutions for ES clusters. Operates and standardizes common database components.

Support the international team in developing applications for loyalty tools in Austria and CEE countries. Analyze, evaluate, and translate business requirements into technical designs to improve the CRM landscape.

Design, optimize, and implement IT solutions for global usability. Lead the software development lifecycle, including rollout and support. Collaborate with the team to build scalable products for international markets.

Senior Backend Developer will design, build, and maintain scalable software products using Java, Spring Boot, and Hibernate. Experience with Kotlin, SQL, Docker, CI/CD, Kubernetes, and REST APIs is required. The role involves unit testing, mentoring, and collaborating in an agile environment. Excellent English communication skills are essential.

Provides customer support via live chat and email, diagnosing and resolving technical issues. Explains solutions clearly and maintains internal knowledge bases. Collaborates with internal teams to improve product and customer experience.