Senior Software Engineer - JavaCard

Join our team at dev2 as a Senior/Lead Software Engineer focusing on Developer Experience, where you'll play a pivotal role in enhancing our development environment and tools. Collaborate with cross-functional teams to design, build, and improve solutions that empower developers to perform at their best. Your expertise will drive innovation and ensure a seamless developer journey.

About Speechify Speechify helps people access information by listening to articles, documents, and books. The platform supports users whether they are at their desks or moving through their day. With a growing user base and strong market position, Speechify leads its category in audio information. Role Overview The Core Experiences Team builds and maintains the core services and SDKs behind Speechify’s product experience on multiple platforms. This senior engineering role focuses on both product and infrastructure, with a strong emphasis on designing reliable APIs and efficient systems that make a real difference for users. What You Will Do Work alongside Product Teams to define project scopes, improve processes for faster customer feedback, and balance integration and user experience decisions. Deliver solutions through a cross-platform SDK. Improve existing features by designing efficient abstractions and optimizing algorithms for faster loading and smarter parsing. Build cloud functions, lightweight backend services, and background jobs using Kotlin. Location This position is based in Berlin, Germany.

At JetBrains, we are passionate about code. Since our inception in 2000, our mission has been to develop the most powerful and effective developer tools available. By automating routine checks and corrections, we accelerate production, empowering developers to innovate and create.About the InitiativeJetBrains is transitioning from standalone developer tools to a cohesive, AI-native platform for software development.AI is evolving from a mere editor assistant to an integral participant in the planning, building, reviewing, and operation of software across teams and organizations. This transformation brings forth challenges that go beyond individual tools, including governance, security, cost management, observability, and coordination between human and autonomous agents.Our aim is to establish a platform that facilitates the structured, scalable, and economically efficient adoption of AI in software development—without confining companies to closed ecosystems.We are constructing the foundation that integrates developer workflows, team collaboration, and organizational control into a cohesive system.This platform will function as the execution and governance layer for AI-driven development, seamlessly integrated with developer tools while designed for cross-team, product, and environment functionality.This initiative represents a long-term strategic investment for JetBrains and is a crucial element of our vision for the future of software development. The RoleWe are seeking a Developer Experience Lead to spearhead significant enhancements to the development experience within the JetBrains Cloud Platform (JCP).This position focuses on optimizing the productivity of JCP engineers by refining build systems, CI/CD pipelines, local development workflows, tooling infrastructure, and AI pipelines. You will be responsible for the developer experience from start to finish—covering local development, testing, CI processes, and production deployment. As this platform is rapidly evolving, many workflows and processes are still being refined. You will define what a superior development experience entails and guide the organization towards achieving it. As part of the team, your responsibilities will include:Leading and executing the strategy for developer experience enhancements across the entire JCP platform.Optimizing build systems (including Gradle, Nx, and others) for quicker builds, improved caching, and reliable scalability.Establishing AI development pipelines, managing context, agents, and transitions, and...

Ecosia is seeking a Senior Platform Engineer – Developer Experience to join our innovative team, either remotely or at our Berlin office.Our mission is to empower engineers to deliver software efficiently, securely, and intelligently. As part of a dedicated team, you'll collaborate closely with our cloud infrastructure team to ensure that developer experience initiatives align seamlessly with operational reliability and platform stability.In this senior role, you will spearhead initiatives that enhance developer workflows, design and implement dependable CI/CD pipelines, advocate for testing best practices, and investigate new methodologies for AI-assisted development and workflows across our organization.Your contributions will significantly influence engineering efficiency, software quality, and overall developer experience while promoting operational excellence and a collaborative, inclusive culture. By enabling engineers to deploy software more swiftly and reliably, you'll be supporting Ecosia’s mission to drive climate action globally.Your Chance to Make an ImpactIn this role, you will effectuate changes that enhance product development and developer experience, facilitating engineers in the rapid delivery of high-quality software while helping to shape our working environment:Design and maintain CI/CD pipelines that are robust, scalable, and user-friendly for teams.Enhance developer workflows encompassing pull requests, local development, templates, and established paths to streamline engineering processes.Establish and uphold testing frameworks and quality gates to ensure software is resilient, maintainable, and dependable.Investigate and implement AI-assisted development and automation to alleviate repetitive tasks and optimize workflows.Engage with engineering teams to adopt best practices and platform tools, ensuring alignment with business objectives.Mentor colleagues and advocate for platform standards, fostering growth among engineers and enhancing the developer experience organization-wide.You will be addressing questions such as:How can we ensure CI/CD pipelines are reliable, scalable, and user-friendly?How can we optimize developer workflows to boost productivity?

GetYourGuide helps travelers find and book memorable experiences in thousands of cities worldwide. The company has operated since 2009 and now includes a global team of more than 850 people, with headquarters in Berlin and 16 local offices. More details about the team and culture are available on the careers page. This Senior Software Engineer position sits within the Developer Enablement Team in Berlin. The focus is on building and maintaining internal tools and platforms that make engineering teams more productive. The role centers on backend development and aims to streamline workflows, automate processes, and improve the experience of developers across the company. What you will do Maintain CI/CD pipelines: Enhance and support continuous integration and deployment workflows using GitHub Actions and ArgoCD to ensure reliable delivery of services. Manage GitHub access: Oversee repository permissions and workflows, enabling secure and effective collaboration across teams. Improve testing tools: Build and maintain automated testing solutions for Java, JavaScript, and Python projects to help strengthen code quality. Enhance local development: Develop tools that make local development environments faster and more consistent, especially for testing purposes. Enable AI-assisted engineering: Contribute to the evolution of in-house AI agents and support the adoption of AI tools within engineering teams. Support diverse engineers: Collaborate with developers working in various programming languages to create cross-language tooling that improves productivity. Contribute pragmatically: Write clean, maintainable code for backend systems and internal developer tools.

Join our dynamic team at dev2 as a Senior/Lead Software Engineer specializing in Database Reliability. We are seeking an experienced professional who will ensure the performance, reliability, and availability of our database infrastructure. You will play a crucial role in designing and implementing solutions that enhance our database systems while collaborating closely with cross-functional teams.

At JetBrains, we are passionate about code. Since our inception in 2000, we have dedicated ourselves to developing the strongest and most effective developer tools available. Our innovative solutions automate routine checks and corrections, accelerating production and empowering developers to innovate, explore, and create.About the InitiativeJetBrains is transforming from standalone developer tools to a unified, AI-native platform for software development.AI is evolving from a mere assistant within the editor to an essential participant in software planning, building, reviewing, and operating across teams and organizations. This evolution presents new challenges that cannot be addressed by individual tools alone, including governance, security, cost management, observability, and cooperation between humans and autonomous agents.Our mission is to establish a platform that facilitates the adoption of AI in software development in a structured, scalable, and economically efficient manner, without confining companies to closed ecosystems.We are constructing a foundation that unifies developer workflows, team collaboration, and organizational oversight into a coherent system.This platform will act as the execution and governance layer for AI-driven development, tightly integrated with developer tools while designed for cross-team, product, and environmental compatibility.This initiative represents a long-term strategic investment for JetBrains and is a cornerstone of our vision for the future of software development. The RoleWe are seeking a Principal Engineer (JetBrains Cloud Platform, Developer Experience) to spearhead significant enhancements to the development experience across the JetBrains Cloud Platform (JCP).This position is pivotal in enhancing the productivity of JCP engineers through improvements to build systems, CI/CD pipelines, local development workflows, tooling infrastructure, and AI pipelines. You will oversee the developer experience from the local development, build, and testing stages to the transition of code through CI to production. Given the rapid growth of this platform, numerous workflows and processes are still in development. You will define what an exceptional development experience entails and guide the organization toward achieving it. As part of our team, you will:Develop and implement strategies for enhancing the developer experience across the entire JCP platform.Optimize build systems (such as Gradle and Nx) for improved speed, caching, and reliable reproducibility at scale.Establish AI development pipelines to facilitate innovation.

At Veo, we are at the forefront of AI-driven sports camera technology. Our cutting-edge, fully automated camera solution empowers sports teams to capture matches and training sessions effortlessly, eliminating the need for a camera operator. We are committed to democratizing sports by providing video analysis tools to teams of all levels, a service that was once exclusive to a select few. Currently, more than 40,000 clubs across 90+ countries utilize our technology to record their games on a weekly basis.What truly distinguishes us is our exceptional team. We are a diverse collection of innovative thinkers, creators, and problem-solvers who are passionate about delivering outstanding products while enjoying the journey.Your RoleAs a Senior Software Engineer specializing in API development at Veo, you will become a pivotal member of a newly formed team dedicated to enhancing our API capabilities. Your contributions will be instrumental in establishing the technical groundwork that enables reliable and scalable integration of external partners with Veo's platform.You will report to an Engineering Manager and work out of our Berlin office, collaborating closely with fellow engineers and a Technical Product Manager. Together, you will architect and build backend systems and APIs that are central to Veo's platform, making strategic architectural decisions that are crucial to our growth and connectivity within the broader sports ecosystem.

Join the innovative team at dev2 as a Lead Frontend Software Engineer. In this pivotal role, you will spearhead the development of cutting-edge frontend solutions, ensuring a seamless user experience and high-quality code. Collaborate with cross-functional teams to bring our projects to life, leveraging your expertise in modern web technologies.

Join our innovative team at dev2 as a Senior Backend Software Engineer, where you'll be instrumental in crafting robust and scalable software solutions. In this role, you will collaborate closely with cross-functional teams to design, develop, and deploy high-performance backend systems.

Join Our Team at GetYourGuide At GetYourGuide, we are the world’s leading platform for unforgettable travel experiences. Since our inception in 2009, we have empowered travelers across the globe to discover and book over 150 million tours, activities, and attraction tickets. Our headquarters in Berlin is home to a dynamic team of over 800 travel experts and technologists, united by a passion for making travel magical. Explore our careers page to learn more about our culture and values. Our Mission: Technology is the driving force behind our growth at GetYourGuide. We continue to innovate in Design, Engineering, and Product to redefine the travel experience. You will play a crucial role in developing solutions that simplify customer interactions and enable our partners to thrive. From creating fintech infrastructure to enhance payment processes to contributing to our strategic growth, the impact of your work will resonate globally. As part of our Engineering team, you will collaborate with diverse, cross-functional teams to enhance the magic of travel for our users. Your Role: As a Senior Software Engineer with a focus on Frontend, you’ll be an integral part of a product team. Collaboration and a customer-centric approach are key as you tackle real-world user challenges and shape the product experience. This is primarily an 80/20 full-stack role, utilizing TypeScript and Node.js for backend development. A robust knowledge of both frontend and backend technologies is necessary, particularly in managing our Server-Driven UI backend-for-frontend (BFF) layer, which involves creating backend components that adapt to frontend requirements to elevate the user experience. Your role will require close cooperation with product managers, designers, and stakeholders, so strong collaboration and communication skills are essential. We seek engineers who not only excel technically but also effectively advocate for customer needs and align with business objectives. You’ll support the team in building and scaling our platform, ensuring a seamless and engaging user experience.

At JetBrains, we are passionate about code. Since our inception in 2000, we have dedicated ourselves to creating the most powerful and effective developer tools available. By automating routine checks and corrections, our tools enhance productivity, enabling developers to innovate and create freely. Kotlin, a modern programming language developed by JetBrains, targets Java, Android, JavaScript, and native platforms. Since its introduction in 2016, Kotlin has rapidly gained traction, becoming the official language for Android development and receiving support from numerous frameworks, engines, and tools. With Kotlin Multiplatform and Compose Multiplatform, our mission is to empower Android developers to create exceptional multiplatform applications. The Kotlin Multiplatform Tooling team is at the forefront of this initiative, developing tools that simplify the process. We are actively working on Kotlin Multiplatform plugins for IntelliJ IDEA and Android Studio, alongside enhancing IntelliJ IDEA's Android support, KDoctor, and the Kotlin Multiplatform wizard. We are looking for a passionate Android developer who can share their insights and experience with our team while contributing to the development of tools that they have always envisioned. Our international and friendly team welcomes applicants who share our enthusiasm for coding.

Join our dynamic team at ppro as a Senior Software Engineer specializing in Risk. In this pivotal role, you will leverage your expertise in software development to enhance our risk management systems and ensure the robustness of our financial solutions. You will collaborate closely with cross-functional teams to architect, develop, and optimize software solutions that mitigate risks and enhance compliance.

Join our dynamic team as a Senior Front End Software Engineer, where you will play a crucial role in developing innovative front-end solutions for our platform. You will work closely with cross-functional teams to design, implement, and optimize user-facing features that enhance the overall user experience.

Join Synthflow AI, a revolutionary no-code platform designed for deploying voice AI agents that transform contact center operations and business process outsourcing (BPO) at scale. We empower mid-market and enterprise companies to efficiently manage routine calls, ultimately saving valuable time and resources for their teams.Our voice AI agents have made a significant impact:Saved over 5 million hours in contact center operationsIncreased call answering rates by 35% compared to non-AI operatorsHandled 45 million calls with an impressive 99.9% uptimeSupported by leading investors such as Accel, Atlantic Labs, and Singular, we are proud to serve over 1,000 customers and drive an industry shift towards advanced and accessible conversational AI.About the Role:We are seeking a Senior Python Engineer to develop robust, production-grade software and backend systems, focusing on databases, scalable APIs, and core engineering principles.Your Key Responsibilities:Design, develop, and maintain our backend infrastructure, ensuring scalability, performance, and reliability.Create and enhance data models and persistence layers with a strong emphasis on PostgreSQL best practices, including schema design, migrations, query optimization, indexing, and transactions.Develop and support enterprise-grade APIs using FastAPI, focusing on versioning, authentication/authorization, and observability.Participate in pair programming to foster code quality and team collaboration.Manage deployments and environments with Kubernetes and GitOps practices (ArgoCD).Conduct code reviews, offering constructive feedback and ensuring adherence to best practices.Contribute to end-to-end product delivery, including occasional front-end feature development when necessary.Qualifications:5+ years of experience as a Python developer, successfully delivering production systems.Proven expertise in building scalable and extensible data infrastructures.Strong familiarity with relational databases, particularly PostgreSQL (performance tuning, migrations, transactions).Experience in developing and maintaining enterprise-grade APIs using FastAPI.Solid understanding of engineering fundamentals and best practices.

Join Databricks as a Senior Staff Software Engineer! At Databricks, we are passionate about empowering data teams to tackle some of the world's most challenging problems, ranging from security threat detection to groundbreaking cancer drug development. Our mission is to build and operate the finest data and AI infrastructure platform, allowing our customers to concentrate on the high-value challenges central to their missions. Our engineering teams develop sophisticated products that address significant needs globally. We are responsible for one of the largest-scale software platforms, consisting of millions of virtual machines that generate terabytes of logs and process exabytes of data daily. Given our scale, we frequently encounter cloud hardware, network, and operating system issues, and our software is designed to shield our customers from these challenges seamlessly. The Delta DML team is responsible for the core write-path operations of Delta Lake, the open-source storage layer powering the Databricks Lakehouse. Our goal is to deliver top-tier performance and a smooth user experience at massive scales, with the majority of data processed in Databricks traversing our platform. We spearhead performance innovations such as Low Shuffle Merge and Deletion Vectors, and actively contribute to open-source initiatives to unify Delta and Iceberg formats. We are looking for a highly capable and experienced Senior Staff Software Engineer to join our backend team. In this pivotal role, you will be key in designing, developing, and maintaining robust backend systems that power Databricks workspaces. You will create the next-generation platform for serving workspace assets, ensuring high queries per second (QPS), low latency, reliability, and performance, while proactively addressing future growth challenges. Additionally, as a senior team member, you will provide technical leadership, mentorship, and guidance to junior engineers, enhancing overall team coding practices and system designs. Your Impact: Address real business needs at scale through your software engineering expertise. Conduct low-level systems debugging, performance measurement, and optimization on extensive production clusters. Architect design solutions, influence product roadmaps, and take ownership of new projects. Implement tools to enhance automation and operability of services. Utilize your extensive experience to help prevent and investigate production issues. Plan and lead complex technical projects that involve collaboration with multiple teams across the company. Act as a technical team lead by mentoring others, leading sprint planning, delegating tasks, and participating in project planning.

About GetYourGuideGetYourGuide is the world's leading platform for unforgettable travel experiences, allowing travelers to uncover the best activities in their destinations. Since our inception in 2009, we have facilitated over 150 million bookings for tours, activities, and attraction tickets globally. With a dedicated team of over 800 travel experts and tech enthusiasts, we operate from our headquarters in Berlin, complemented by 17 local offices worldwide.Our Mission:At GetYourGuide, technology is the driving force behind our growth. Our Marketplace initiatives are redefining global travel experiences, and we invite you to join us in this mission. The features we develop allow customers to effortlessly book memorable experiences while empowering our partners to grow their businesses. This complex challenge presents a unique opportunity for you to create impactful solutions that scale across the globe.From crafting dynamic search and recommendation algorithms to designing new features that propel our growth, your contributions will have a tangible impact. We pride ourselves on pushing boundaries and discovering innovative ways to bring the magic of travel to people around the world.Our teams operate within cross-functional mission groups consisting of backend and full-stack engineers, mobile developers, data engineers, product managers, and designers.

Our MissionAt Neko Health, we are on a mission to revolutionize healthcare by transitioning from a reactive model of treating illnesses to a proactive approach focused on prevention. Our advanced non-invasive technology, combined with clinical expertise, empowers individuals with early, actionable health insights.Role OverviewAs a Lead Software Engineer within the Product Engineering team, you will take charge of designing and developing high-quality, fail-proof user experiences for our member-facing applications and clinical processes. This pivotal role merges deep system design, innovative product thinking, and excellence in AI-driven engineering.You will set the standard in an environment where engineers prioritize understanding the 'why' before determining the 'how.' You will own outcomes end-to-end and seek architectural innovations or automation that can deliver substantial improvements. Collaborating across Product, Data Science, and Hardware teams, your decisions will have a direct impact on member trust, clinic reliability, and Neko's growth trajectory.What You Will Achieve in Your First 6 to 12 MonthsBecome an integral contributor within the first 3 months, taking ownership of significant areas within the Member Experience or Medical Excellence product domains.Design and implement end-to-end features that greatly enhance customer journeys, ensuring smooth, resilient, and clinically safe experiences.Introduce and advocate for AI-first workflows, utilizing tools like Claude Code to streamline processes, allowing you to focus on impactful system design.Clarify challenges in ambiguous areas, proactively identify issues, ask insightful questions regarding context and intent, and provide transparent feedback even when solutions are not straightforward.Lead essential reliability and quality initiatives to ensure that member-facing systems are robust, scalable, and capable of sustaining Neko's rapid expansion.Mentor and influence fellow engineers, elevating standards for technical excellence, problem-solving, and customer-centricity.Collaborate with cross-functional teams across Product, Data Science, and Hardware to ensure system design aligns with real-world clinical and operational requirements.

Welcome to Planet. We are dedicated to harnessing the power of space to benefit life on Earth.Planet designs, constructs, and operates the largest constellation of imaging satellites ever created. This constellation provides an unparalleled dataset of empirical information through a groundbreaking cloud-based platform, serving key players in commercial, environmental, and humanitarian sectors. We embody both a space and a data company.Our clients worldwide utilize Planet's data to innovate technologies, increase revenue, advance research, and tackle some of the world's most formidable challenges.With comprehensive oversight over hardware design, manufacturing, data processing, and software development, our office is a vibrant hub of experts from diverse fields.We prioritize a people-centric culture and community, striving to evolve in a manner that values our team members and positions our company for future growth. Join Planet and contribute to our mission of transforming how people perceive the world.Planet is a global organization with team members working remotely from around the world and from offices in San Francisco, Washington, D.C., Germany, Austria, Slovenia, and the Netherlands.About the Role:As a Senior Software Engineer on the Calibration and Validation (CalVal) team, you will play a vital role in enhancing the integrity and progression of our geometric models. You will craft and deploy automated, scalable processes to ensure our products consistently surpass stringent geometric specifications and service level agreements (SLAs). Your responsibilities will include developing photogrammetric models, error budgets, and calibration concepts for our high-resolution monitoring programs, ensuring spatial integrity across various fleets. Furthermore, you will lead ongoing performance characterization and act as the principal investigator for intricate image quality issues, troubleshooting sensor models and geometric anomalies to devise long-term solutions that uphold Planet's exemplary spatial data standards.This is a full-time, hybrid position requiring you to work from our Berlin office three days per week.