Senior Software Engineer - JVM Language Clients
$500 per monthClickhouse
About ClickHouse: ClickHouse is a premier, internationally recognized database infrastructure juggernaut, real-time analytics market leader, and Forbes Cloud 100 technology titan operating on an absolute mission to protect, optimize, and transform how global enterprises manage, store, and utilize data at hyper-scale. Powering mission-critical analytical workflows, real-time observability grids, and enterprise AI data pipelines for the world’s most sophisticated digital innovators—including Meta, Cursor, Tesla, Capital One, Airwallex, and Sony—ClickHouse maintains breakneck commercial velocity, highlighted by consecutive triple-digit ARR growth and backed by a monumental $400M Series D financing round. Driven by a high-performance, developer-first corporate philosophy that prizes technical excellence, pragmatic problem-solving, and open-source collaboration, the organization provides high-agency engineering leaders with an uncompromised remote canvas to leverage cutting-edge systems, manipulate byte-level network protocols, and deploy robust, low-latency database architectures safely across Spain.
Position Overview
We are seeking a highly analytical, detail-obsessed, and systems-minded Senior Software Engineer - JVM Language Clients to join our core centralized Integrations Ecosystem organization in a full-time remote capacity open to qualified technical builders resident anywhere in Spain. Operating as the technical owner and primary strategic architect behind ClickHouse’s official Java client and JDBC driver, you will step up to claim true individual operational and strategic accountability for the foundational communication layer that our internal Connectors team and a massive global network of third-party frameworks rely on every single second. Shifting completely away from routine application layer building, standard web interface modifications, minor standalone template adjustments, or disconnected utility typing, you will run an active low-level database performance and system design laboratory—optimizing low-level drivers, configuring data framework integrations, and maximizing throughput metrics. This position requires a database systems or stream processing veteran with 5+ years of craft depth who architects high-throughput network clients fluidly natively using Backend mechanics, engineers automated testing or regression blocks cleanly natively leveraging Python or alternative script automation tools, and commands JVM concurrency patterns confidently under open-source community standards.
Key Responsibilities
- End-to-End JVM Driver Ownership: Serve as the principal technical owner for the ClickHouse Java client and JDBC driver, directing its architectural roadmap, public API design patterns, and release engineering pipelines cleanly natively utilizing Backend methodologies.
- Low-Level Performance Optimization: Drive high-impact throughput and latency enhancements across the client and ClickHouse server, optimizing data layouts down to the level of bytes on the wire.
- Internal and External Client Interlock: Partner day-to-day with our core Connectors team as an embedded customer, ensuring the underlying driver architecture natively supports official ingestion bridges for Apache Kafka, Spark, and Flink.
- Open-Source Ecosystem Engagement: Engage transparently with the global open-source data infrastructure community, handling public issue queues, conducting public code reviews, and aligning maps on external data visualization platforms.
- JVM Concurrency and Resource Governance: Design and optimize high-concurrency components, configuring executor pools, managing reactive streams, handling backpressure thresholds, and tuning connection pools to prevent runtime failure modes.
- Memory Model and Profiling Audits: Profile runtime client environments continuously, executing JVM memory adjustments, garbage collection (GC) tuning, and heap allocations to protect application reliability.
- Technical Documentation and RFCs: Write, defend, and iterate technical design documents, Requests for Comments (RFCs), and detailed architectural proposals to guide collaborative engineering investments.
- AI-Assisted Development Integration: Incorporate modern AI development tools (such as Claude Code, Cursor, or GitHub Copilot) into development processes with a strict, high-judgment independent code review perspective.
Required Skills & Qualifications
- A minimum of 5 years of verified professional software engineering history, with a powerful, demonstrable focus on data-intensive systems (such as database drivers, SDKs, complex data ingestion pipelines, CDC tools, streaming meshes, or OLAP infrastructure).
- Expert-tier capability optimizing low-level backend abstractions, designing reusable developer tools, and building thread-safe library architectures natively utilizing Backend parameters.
- Practical operational familiarity writing regression frameworks, automating integration diagnostics, and parsing systemic trace outputs natively using Python or adjacent language structures.
- Deep, comprehensive expertise inside the Java platform and the JVM runtime environment, highlighting deep familiarity with memory alignment, GC internals, profiling suites, and network I/O layers.
- Proven technical history building, releasing, or substantially extending a widely adopted software library or software development kit (SDK) where API design backward compatibility is critical.
- Strong, uncompromised grasp of database fundamentals, encompassing structural SQL query execution, analytical OLAP workloads, and column-store concepts.
- Outstanding written and scannable technical communication attributes in business-fluent English, enabling seamless coordination across a globally distributed team through engineering documentation.
- Location Context: Position open to qualified software engineers based permanently and resident within the borders of Spain to operate under a 100% remote work-from-home layout.
Preferred Strategic Indicators (Nice to Have)
- Working knowledge of JDBC internals, Arrow Flight SQL, ADBC, or columnar data models (such as Apache Arrow specifications).
- Prior code contributions to open-source data infrastructure systems (such as Apache Kafka, Flink, Spark, dbt, Debezium, or Iceberg platforms).
- Experience engineering customized network wire protocols or contributing to high-concurrency client-server network applications.
What We Offer
- Vetted Global Data Sector Salaried Blueprint: A highly competitive full-time baseline annual corporate base salary package calibrated precisely to evaluate your JVM authority and system craftsmanship, paired with an impactful equity stake through lucrative corporate stock options.
- The exceptional professional canvas to claim absolute technical code authorship over the official Java driver architectures power-routing data queries for thousands of global enterprises.
- Profound work-from-home remote parameters offering a 100% remote layout within Spain, complete scheduling trust, and zero physical geographic office commuting friction out of any province.
- Immediate baseline access to a premium group healthcare protection matrix, featuring robust employer premium contributions to ensure comprehensive health coverage.
- Access to progressive lifestyle and wealth accumulation systems, including a dedicated $500 USD Home Office setup allowance to maximize your remote workspace configuration, generous flexible time-off policies, and direct corporate enrollment into our elite Global Gatherings company-wide offsites to foster deep in-person technical synergy.
$500 per month
...collaboration, the organization provides high-agency engineering leaders with an uncompromised remote canvas to... ...highly analytical, detail-obsessed, and systems-minded Senior Software Engineer - JVM Language Clients to join our core centralized Integrations Ecosystem...SeniorLanguageFull timeWork at officeImmediate startRemote workWork from homeHome officeFlexible hoursShift work$100k
...across a wide variety of genres and languages. Members can play, pause and... ...vital part of Netflix's Productivity Engineering organization, and supports Java & JVM-based applications and services... ...engineers to deliver high-quality software at scale. About the Role...SeniorLanguageFull time$170k - $220k
...rooted in connection—between clients and clinicians, care teams, loved... ...experimentation, and product engineering and want to build systems... ...with an application programming language, preferably Python. ~... ...you to pay a fee or download software as part of the interview process...SeniorLanguageFull timeWork at officeLocal area- ...are seeking a highly skilled Senior Software Engineer to join our team developing Azul... ...C++ code for system‑critical JVM runtime components and distributed client‑server communication using gRPC... ...internals (e.g. Linux, macOS), and languages such as Java or Rust is an...SeniorLanguageFull timeRemote workWorldwideFlexible hours
- Role Description We're now looking for a Senior Graphics/JVM Software Engineer with in-depth knowledge of modern hardware-accelerated APIs to join the... ...skills. Requirements ~Know other programming languages, like Objective-C or Kotlin. ~Are familiar with Cocoa...SeniorLanguageFull timeWork at officeLocal areaRemote workWork from homeRelocation packageFlexible hours
- ...areas with these unique projects. As a Senior Software Engineer at PlayEveryWare, you’ll work alongside internal and client engineers on indie and AAA teams to... ...~ Proficiency in a variety of programming languages Benefits & Perks ~ Enrollment in Japanese...SeniorLanguageFull timeWork at officeLocal areaVisa sponsorship
- ...Post Technologies, Inc. is seeking a Senior Software Engineer to provide senior-level development,... ...software development practices; programming languages; operating systems; networks;... ...solutions that enhance our corporate clients’ productivity and empower our government...SeniorLanguageLocal areaRemote workFlexible hours
$140k - $195k
...About the Role We’re looking for a Senior Software Engineer who can independently build meaningful... ...role, ideally with Java or a similar language Experience with relational databases... ...help fix a broken system and improve our clients’ wellbeing and health outcomes. We’ve...SeniorLanguageWork at officeWork from homeFlexible hoursDay shift- ...DEPLOY has been retained to find a senior-level Software Engineer to join us on an hourly, flexible... ...workstreams across a portfolio of active client engagements — front-end first, with... ...waving Tools & Technologies Languages TypeScript, JavaScript (ES2020+),...SeniorLanguageHourly payContract workImmediate startRemote workFlexible hours
- ...Functions: • Design, implement, and maintain client side and server side code for web based... ...Object Oriented Programming techniques and languages (in particular Java or C++) • CVS, SVN or other version control software • Knowledge of database modeling including...SeniorLanguageFull timeImmediate startWeekend workAfternoon shift
$50 - $70 per hour
...Responsibilities Develop and complete coding tasks in various enterprise languages . Evaluate and improve systems and build toolchains using C and Rust . Enhance enterprise JVM and build ecosystems with C# , Kotlin , Scala , and Swift ....SeniorLanguageFull timeContract workSummer workRemote work- Overview Keeper Security is hiring a Senior Client Software Engineer to join our engineering team. This is a 100% remote position, with an opportunity... ...of organizations globally. Keeper is published in 23 languages and is sold in over 150 countries. Join one of the fastest...SeniorLanguageTemporary workRemote work
$90k - $115k
...potential. Job Description The Senior Software Engineer (with hardware interfacing) is responsible... ...environment, in a variety of languages (primarily C# and WPF). They design and... ...MS Azure DevOps Internal/external client support Troubleshoot problems and solving...SeniorLanguageLocal areaImmediate start2 days per week$130k - $149.6k
...safety agencies and enterprise clients across the United States,... ...domain expertise in spatial data engineering with a forward-leaning... ...International is seeking a Senior Software Engineer Geospatial & AI to... ...js, Python, or a comparable language ~ Hands-on experience with...SeniorLanguageTemporary workRemote workFlexible hours- ...technology. We connect candidates and clients within the F&A, Engineering, Technologies, Manufacturing,... ...Description Experience level: Mid-senior Experience required: 2 Years Education... ...with one or more object-oriented languages (e.g., Java, C#, C++) Looking to...SeniorLanguageFull timeWork experience placementWork at officeRelocation package
$145k - $165k
...business services professionals serving clients from offices in New York, Palo Alto,... ...these values. What You Will Do: The Senior Software Engineer plays a central role within the... ...step legal workflows, integrating large language models, tool-calling, and orchestration...SeniorLanguageFull timeWork at officeLocal areaMonday to Friday- ...seeking a motivated and detail-oriented Software Engineer to join our team. As a key member of... ...Cypress). Experience with scripting languages used for test automation (e. g., Python... ...innovative solutions that enhance our corporate clients’ productivity and empower our...SeniorLanguageRemote jobFull timeLocal areaFlexible hours
$140k - $150k
...Fitch Group is currently seeking a Senior Software Engineer, Full Stack based out of our NYC office... ...Typescript, SCSS, HTML, and front-end languages. ~ Knowledge of REACT tools... ...a century of growth and enables our clients to make important credit judgements with...SeniorLanguageApprenticeshipWork at officeLocal areaImmediate startWork from home- ...team of highly experienced engineers and business leaders, with hubs... ...something extraordinary. Senior Software Engineer – Core Talos is... ..., Rust or similar systems languages. ~ Demonstrated ownership... ...Studies: Real world examples of client solutions Awards: Talos...SeniorLanguageContract workWork at officeHome office
- ...As a Senior Software Engineer on the Sharing team, you will build the foundation that powers how millions... ...high-performance experiences, from client-side user flows to the backend systems... ...systems in C++, C#, Java, or similar languages. ~ Strong experience working on consumer...SeniorLanguageFull time
$120k - $140k
...Description Sharetec is looking for a Senior Software Engineer to join our team! At Sharetec, we... ...PHP, or other strongly-typed backend languages are encouraged to apply; comfort... ...for credit unions, Sharetec empowers clients with modern tools for member services...SeniorLanguageFull timeRemote workNight shift- ...build thriving online communities. Our client offers a plug-and-play platform that enables... ...candidate will be one of the first engineers to join the company—but will be joining... ...working with Typescript or similar typed languages - Experience with React or similar frontend...SeniorLanguageRemote jobFull timeFlexible hours
- ...experiences for everyone. As a Frontend Engineer on the Co-Experience team, you will work... ...to build out new features and build client side developer APIs as we accelerate our... ...You’re a generalist, open to learning new languages and technologies, and can easily adapt...SeniorLanguageFull time
- ...PlanIT Group is seeking a Senior Software Engineer to support our Federal customer in the Washington... ...be proficient in DCL (Digital Command Language) scripting and RMS (OpenVMS Record Management... ...Trust Clearance • Pass both a client mandated clearance process to include...SeniorLanguageRemote work
$180k - $300k
...Software Engineer, Consensus - Anza Who We Are Anza is a Solana R&D lab pushing the boundaries... ...role in fortifying Anza's Agave client and the broader Solana network. Your work... ...proficiency in systems programming languages such as Rust or C++. Experience with consensus...SeniorLanguageRemote workWorldwideFlexible hours- ...: Bachelor of Computer Engineering Job Description FIS... ...Management Services, LLC seeks Software Engineer Seniors in Jacksonville, FL to... ...working with programming languages including Java, Python to... ...utilizing Tableau Server Client (Python), Viz Alerts implementation...SeniorLanguageFull timeRemote workWork from home
$300k
...fairly. To do that, we hire the best engineers, actuaries, sales, and service... ...experience that we’d want if we were the client. We're hiring a Senior Software Engineer on the growth team with... ...build solutions. Specific languages: We don't really care if you've worked...SeniorLanguageFull timeWork at officeWork from home- ...Overview We are looking for a Backend Engineer to join our engineering team and build... ...or issuance without breaking downstream clients Building idempotent job flows for high... ...providers Your team's typical stack Languages: Go and TypeScript/Node.js; some...SeniorLanguageFull timeContract workWork at officeLocal areaImmediate startRemote workFlexible hours
- ...JOB TITLE/TYPE: Software Engineer, Senior JOB SUMMARY Are you looking for more than... ...Ohio, and entails direct support to clients at Wright-Patterson AFB. Work may be... ...another technical/system-level programming language. Background in mathematics,...SeniorLanguageFull timeContract workFor contractorsRelocation package
- ...range of services to federal government clients, including program management,... ...heritage. Your Role As a remote Senior Software Engineer, you will play a pivotal role in bridging... ...one of these types of development languages: Angular / Java EE / HTML5 Expansive...SeniorLanguageFull timeRemote work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Software Engineer - JVM Language Clients. Be the first to apply!
- ngo software engineer Remote
- software data engineer Remote
- graduate software engineer Remote
- software engineer unity Remote
- software development engineer (robotics engineer) Remote
- software system engineer Remote
- associate software engineer Remote
- software developer no experience Remote
- graduate software developer Remote
- software engineer - early career Remote












