Senior Software Engineer (JVM & Kotlin)

🏢 Summary: Senior individual-contributor role owning the data and context architecture behind an AI-powered development platform. The engineer will build scalable repository indexing, search, ranking, and retrieval pipelines that supply AI agents with precise codebase context across large monorepos. The offer includes B2B or employment-contract options, flexible hours, a development budget, and office perks. 🗂️ Requirements: 8+ years of software engineering experience, Senior or expert-level individual-contributor track record, Ownership of complex systems from design through production deployment, Information retrieval expertise, Graph and database modeling experience, Code structure extraction experience, Context assembly from retrieved sources, Large monorepo architecture experience, Deterministic system architecture expertise, Proactive end-to-end ownership, Technical mentoring and architectural guidance, Full-time office collaboration in Kraków 📃 Skills: Indexing, Ranking, Parsing, Retrieval, Graphs, Databases, AST, Search, Monorepos, Static-analysis 🏢 Description: Position: Senior Engineer (Data & Context Architecture) Type of contract: B2B or UoP Location: Kraków (full time office) Salary: 34,000 – 36,000 PLN netto (B2B) or 31,000 – 32, 000 PLN brutto (UoP) Role overview: Our client does not just build software; they engineer competitive advantages. They are building a proprietary, near-deterministic AI-powered development platform designed for broad developer adoption, operating at the absolute frontier of technology alongside the world’s leading AI labs. They are looking for a Senior Engineer to join their core data and context structuring team. This is a role for an expert individual contributor who takes Extreme Ownership over a foundational challenge: bridging the gap between what a codebase contains and what an AI development agent receives when an engineer requests assistance. When an engineer interacts with the system to build components, generate features, or modify code, the agent must automatically retrieve the perfect context—including app conventions, connected components, dependencies, architectural boundaries, and design patterns—without anyone manually copying data into a prompt. They transform complex software repositories into structured, mostly deterministic knowledge graphs. In this role, you will take full ownership of this indexing and conversion layer, evolving it to make codebase knowledge searchable at scale and fluidly wired into agents at runtime. Your work will span from single-package retrieval pipelines to workspace-wide cross-boundary indexing, leveraging everything from lexical routing to sophisticated hybrid search engines. Requirements: Experience 8+ years of hard-core software engineering experience. Proven track record as a Senior or Expert-level individual contributor. Confidence owning complex systems from initial design through production deployment. Technical Depth & Skills Strong foundation in information retrieval concepts—including indexing strategies, ranking algorithms, query parsing, and precise context budgeting. Comfort working with graphs and databases to model complex software dependencies and codebase relationships, persisting indices at scale, and retrieving results fast under real-time production query loads. Deep experience extracting structure from code, including exports, module boundaries, import relationships, and abstract syntax representations. Hands-on expertise assembling optimized context blocks from retrieved sources rather than dumping raw repositories into large prompts. Ability to reason strategically about large monorepos, determining exactly what to index, what to expand dynamically, and what to leave out. Skill in keeping deterministic architectural foundations completely trustworthy while building intelligent retrieval pipelines on top. Extreme ownership You do not wait for tasks to be assigned; you proactively identify gaps and structural challenges. You see a complex engineering problem, design a clean solution, align the necessary resources, and deliver with absolute certainty. You naturally take accountability for final outcomes and user experiences, not just isolated implementation details. Mentoring & Collaboration Ability to elevate the entire engineering team through high technical standards and clear architectural guidance. Confidence collaborating hands-on in a shared office environment through pair programming, interactive design discussions, and direct exchange. Skill in helping fellow engineers grow into entirely independent problem solvers. Business DNA Deep understanding that code serves core business objectives and strategic ROI, not just technical elegance. Ability to create durable operating leverage through sound technical choices and future-proof design. Strong instinct for connecting low-level system architecture choices directly with company value. What you can expect Frontier Product: Building the core system data layer and retrieval engine that makes near-deterministic AI agents highly effective and deployable across massive production codebases. Elite Environment: Working alongside C-level executives, industry visionaries, and core platform architects with no corporate theater or bureaucratic overhead. Responsibilities: Agent Context Retrieval: Design and build the pipeline that transforms an engineer’s natural-language request into a perfectly ranked, budgeted context pack consisting of symbols, files, patterns, and dependency expansions. Repository Indexing: Evolve deterministic codebase indexing from static analysis and structured documentation into ultra-fast, incremental search indices that stay synced as codebases change in real time. Search and Ranking: Implement advanced retrieval modes that route queries to optimal zones, score relevance accurately, and expand along dependency graphs without sacrificing precision. Workspace-Scale Search: Scale retrieval mechanisms from single packages to massive enterprise monorepos, ensuring cross-boundary queries and merged indices maintain high performance. Cross-Team Integration: Wire retrieval pipelines into agent runtimes and core platform services, collaborating closely with infrastructure teams to ship retrieval as a first-class product feature. Perks in the office: Premium coffee selection Secure bike parking On-site shower facilities Free selection of beverages Complimentary snacks Modern, high-end office space No dress code policy Dedicated playroom and relaxation area Benefits: Dedicated conference and professional development budget Flexible working hours

🏢 Summary: Senior Infrastructure Engineer role for an on-site core team building an AI-powered developer platform. The offer focuses on end-to-end ownership of scalable cloud infrastructure, Kubernetes orchestration, distributed workflows, CI/CD, observability, and production TypeScript services, with compensation of 34,000–36,000 PLN net B2B or 31,000–32,000 PLN gross under an employment contract. 🗂️ Requirements: 8+ years of software engineering experience, 3+ years of cloud infrastructure or platform engineering experience, 3+ years of React development experience, 3+ years of enterprise CI/CD pipeline experience, Production experience with complex multi-service applications at scale, End-to-end ownership of cloud infrastructure decisions and delivery, Expert TypeScript, Node.js, React, and Next.js skills, AWS experience with EKS, networking, IAM, and secrets management, Production Kubernetes experience, Monorepo architecture experience, Hands-on on-site collaboration experience, Technical mentoring and architectural guidance skills 📃 Skills: TypeScript, Node.js, React, Next.js, AWS, EKS, Kubernetes, Nx, IAM, CI/CD, APIs, Microservices, Webhooks, Monorepos 🏢 Description: Position: Senior Infrastructure Engineer Working model: on-site only Location: Kraków (full time office) Salary: 34,000 – 36,000 PLN netto (B2B) or 31,000 – 32, 000 PLN brutto (UoP) Role overview: Our client does not just build software; they engineer competitive advantages. They are building a proprietary, near-deterministic AI-powered development platform designed for broad developer adoption, operating at the absolute frontier of technology alongside the world’s leading AI labs. They are looking for a Senior Infrastructure Engineer to join their core team to drive system design and take full ownership of infrastructure delivery. In this role, you will lead the architecture, construction, and operation of everything from container orchestration and distributed job queues to infrastructure-as-code patterns and production telemetry. This is a highly hands-on platform and infrastructure engineering role. You will routinely write production-grade TypeScript backend services, stand up scalable cloud infrastructure, and ensure that long-running, resource-intensive developer workflows remain completely reliable, highly observable, and thoroughly secure under heavy load. Requirements: Experience 8+ years of hard-core software engineering experience. 3+ years of dedicated cloud infrastructure or platform engineering experience. 3+ years of practical experience building responsive React applications. 3+ years building, maintaining, and optimizing enterprise-grade CI/CD automation pipelines. Proven track record of shipping and operating complex, multi-service production applications at scale. Complete comfort owning major cloud infrastructure decisions and delivery end to end. Technical Depth & Skills Absolute expertise in TypeScript, Node.js, React, and Next.js. Deep understanding of modern monorepo architectures (such as Nx) and why massive codebases rely on structured monorepo methodologies. Strong AWS cloud experience, specifically spanning Amazon EKS, complex networking, IAM policies, and secure secrets management. Production-grade Kubernetes experience—including deployments, custom ingress routing, advanced health checks, and autoscaling policies. Familiarity with the modern developer tools ecosystem, including IDE extensions, custom CLIs, and third-party developer integrations. Extreme ownership You actively monitor staging and production environments, identifying infrastructural gaps and closing them before they impact users. You design systems for failure from day one, planning for worker crashes, duplicate webhooks, cache restarts, and transient cloud outages. You focus entirely on delivering rock-solid, working systems in production rather than structural diagrams that never ship. Mentoring & Collaboration Ability to elevate the entire engineering team through high technical standards and clear architectural guidance. Confidence collaborating hands-on in a shared office environment through pair programming, interactive design discussions, and direct exchange. Skill in helping fellow engineers grow into entirely independent problem solvers. Business DNA Deep understanding that code serves core business objectives and strategic ROI, not just technical elegance. Ability to create durable operating leverage through sound technical choices and future-proof design. Strong instinct for connecting low-level system architecture choices directly with company value. What you can expect Frontier Product: Building state-of-the-art systems and state-machine architectures that redefine how modern developers interact with AI workflows. Elite Environment: Working alongside C-level executives, industry visionaries, and core platform architects with no corporate theater or bureaucratic overhead. Responsibilities: Platform APIs & Orchestration: Build, optimize, and deploy orchestrator-style APIs on Kubernetes (managing operations like agent initialization, suspension, state synchronization, and secure reads). Asynchronous Distributed Jobs: Implement and scale distributed job queues and background workers for long-running indexing, code building, and release management tasks. Data Layer Architecture: Design, scale, and evolve the platform’s data layer—including database boundaries, optimized access patterns, and strong consistency models at scale. System Integrations: Seamlessly connect internal microservices and external webhooks with reliable event handling, transactional callbacks, and distributed handoffs. Production Operations: Own and advance logging, distributed tracing, alerting frameworks, and modern incident response workflows across production environments. Developer Experience (DX): Take ownership of local development environments, monorepo tooling, and internal productivity scripts. Monorepo Structural Evolving: Plan and execute large-scale codebase structural migrations without freezing product delivery timelines. CI/CD Pipelines: Own the architecture and continuous execution of deployment and integration pipelines end to end. Perks in the office: Premium coffee selection Secure bike parking On-site shower facilities Free selection of beverages Complimentary snacks Modern, high-end office space No dress code policy Dedicated playroom and relaxation area Benefits: Dedicated conference and professional development budget Flexible working hours

🏢 Summary: Lead quality validation for HD map products by defining test strategies and building automation-first frameworks for large-scale geospatial data. The role combines end-to-end testing, data pipelines, and cross-functional collaboration to ensure reliable map releases in real-world conditions. 🗂️ Requirements: Bachelor’s or Master’s degree in Computer Science, Software Engineering, or similar, 7+ years of experience in test engineering, data engineering, or related field, SDLC and agile development practices, End-to-end manual and automated testing, Advanced Python automation and data-validation workflows, SQL and data-pipeline experience, Strong analytical problem-solving and attention to detail, Cross-functional communication skills, Successful pre-employment screening 📃 Skills: Python, SQL, SDLC, Agile, Automation, Testing, Validation, Pipelines 🏢 Description: What's the role? You will take ownership of how we validate and scale the quality of HERE’s HD map products. In this role you work at the intersection of data, automation, and product, shaping how large scale geospatial systems are tested and trusted. You will drive modern testing approaches, build automation first validation frameworks, and partner closely with engineering, data science, and product teams to ensure our maps perform reliably in real world conditions. Define and drive test strategies for HD map products, including content validation and hybrid testing approaches Translate product and data specifications into scalable validation frameworks Design and execute test plans, test cases, and data pipelines for product level validation Build and maintain automation driven testing frameworks for large scale data validation Collaborate with Data Science teams to integrate metric driven and machine learning validation signals Partner with Engineering, Product, and Program teams to align validation with release priorities Analyse results, identify gaps, and drive continuous improvement in testing approaches Contribute to tooling, infrastructure, and automation to increase efficiency and coverage Who are you? You enjoy working in complex environments where data, systems, and product come together. You take ownership, think analytically, and are comfortable navigating ambiguity. You are curious by nature and motivated to continuously learn, especially when it comes to new technologies and geospatial systems. Bachelor’s or Master’s degree in Computer Science, Software Engineering, or similar 7+ years of experience in test engineering, data engineering, or a related field Strong understanding of SDLC and agile development practices Solid experience with end to end testing across manual and automation approaches Advanced Python skills including automation and data validation workflows Experience with SQL and working with data pipelines Strong analytical mindset with attention to detail and problem solving Excellent communication skills and ability to work cross functionally Nice to have: Experience with geospatial data models or HD map products Familiarity with HERE tooling such as Unimap, HDLM Viewer, or Map Creator Exposure to cloud environments and pipeline based systems Experience applying machine learning for validation or anomaly detection ISTQB or similar testing certifications What we offer? Work on the development of high-scale services, managing thousands of data processing pipelines Innovative and modern technologies Truly international team of fantastic & talented people from 60+ countries worldwide, working from strong tech hubs located in Europe, the US, and Asia, along with multiple smaller locations Flexible working hours & a flexible approach to office vs. remote work Medical coverage for you and your family Yearly variable bonus This role is eligible for the Creative Tax Incentive scheme in Poland (KUP – Autorskie Koszty Uzyskania Przychodu) Life at HERE in Poland comes with a competitive total rewards package designed to support your health, wellbeing, and performance. This includes a base salary, a Short-Term Incentive (STI) bonus (percentage based on role), a creative tax advantage for eligible positions, private medical care (including dental), life insurance, a meal allowance, vision reimbursement, a remote work allowance (if applicable), access to MyBenefit and Multisport programs, and various wellbeing initiatives. Paid time off, sick leave, and parental leave are provided in accordance with the Polish Labor Code. As part of HERE Technologies employment process, candidates will be required to successfully complete a pre-employment screening process. This offer and any related claims are subject to the successful completion of a pre-employment screening. This will involve employment, education, and criminal verification if applicable. Who are we? Ever checked in somewhere on social media, tracked an online order, or used navigation while driving? Then you have likely interacted with HERE Technologies. Our platform powers location based services across industries including automotive, logistics, and mobility. We build high quality maps and location services that operate at global scale and support mission critical use cases. Within this team, you will work on the validation and quality of HD maps, ensuring that the data powering advanced navigation and autonomous driving is reliable, scalable, and ready for real world use. Closing As part of HERE Technologies employment process, candidates will be required to successfully complete a pre employment screening process. This offer and any related claims are subject to the successful completion of a pre employment screening. This will involve employment, education, and criminal verification if applicable. HERE is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, age, gender identity, sexual orientation, marital status, parental status, religion, sex, national origin, disability, veteran status, and other legally protected characteristics. #LI-TW2  #LI-HYBRID Apply for this job online Email this job to a friend Share on your newsfeed

🏢 Summary: Senior Software Engineer role focused on leading architecture, designing scalable and resilient applications, and owning projects from implementation through production operations. The position partners with product and design teams, sets technical standards, mentors engineers, and drives adoption of AI tools. Compensation is $6,200–$8,000 per month on a B2B basis. 🗂️ Requirements: 5+ years of professional software engineering experience, Experience designing resilient, highly scalable applications, Ability to make architectural decisions independently, Experience mentoring less experienced engineers, Fluency in Polish and English, Ability to deliver in fast-moving environments 📃 Skills: Architecture, Modeling, Reliability, Scalability, Monitoring, Security, AI 🏢 Description: Why Housecall Pro? Help us build solutions that build better lives. At Housecall Pro, we show up to work every day to make a difference for real people: the home service professionals that support America’s 100 million homes. We’re all about the Pro, and dedicate our days to helping them streamline operations, scale their businesses, and—ultimately—save time so they can be with their families and live well. While our headquarters are based in Denver, Colorado, our team spans the globe, with teammates across Brazil, Poland, the Philippines, Mexico, and beyond. We care deeply about our customers and foster a culture where our company, people and Pros grow and succeed together—no matter where they’re based. Leadership is as focused on growing team members’ careers as they expect their teams to be on creating solutions for Pros. We also offer: Paid holidays and flexible, take-it-as-you-need-it scheduled time off A culture built on innovation that values big ideas, no matter where they come from A MacBook set up and ready from day one, plus a $500 stipend to design your ideal workspace Central European Time (CET) hours to support a balanced schedule for our Poland-based team Equity in a rapidly growing startup backed by top-tier VCs About the role As a Senior Software Engineer, you bring strong engineering fundamentals, deep problem-solving ability, and the capacity to navigate complex systems with clarity and intention. You focus on systems thinking, scalable architecture, and writing clean, maintainable code that delivers meaningful value to our customers. In this role, you will lead technical decision-making, drive projects from design through production operations, and collaborate closely with product, design, and engineering partners to shape impactful user experiences. You will help define and champion technical best practices, elevate the quality of our systems, and mentor fellow engineers as the team continues to grow. Our engineering culture is passionate, empathetic, and driven by a shared mission: improving the lives of our service professionals, our Pros. Your contributions will play a critical role in enabling their success and strengthening the foundation of our product for years to come. Compensation: 6,200 - 8,000 USD per month (B2B) What you’ll do Build a product that improves users’ lives (75k unique daily users, 4.6 ⭐at App Store) 👉 Learn more about the HCP product Lead architecture discussions and drive system design, data modeling, and service reliability implementations that strengthen our platform Own projects end-to-end, from architecture and implementation to deployment and monitoring Collaborate closely with product, design, and engineering to deliver high-quality, maintainable, and high-performance software solutions Define and champion technical direction, standards, and best practices as we scale Continuously learn, share knowledge, and mentor developers across your team, giving feedback to junior developers and peers on technical designs, merge requests, and other areas Deliver solutions that underscore performance, stability, extensibility, supportability and security Lead AI tool adoption strategies and encourage best practices across your team Qualifications 5+ years of professional software engineering experience Experience designing and building resilient and highly scalable applications Experience mentoring and coaching less experienced engineers Ability to operate independently, make sound architectural decisions, and deliver in fast-moving environments Product-first mindset with a focus on delivering business and user valueInterest in leveraging AI technologies to enhance productivity, quality, and innovation This position requires fluency in both Polish and English What will help you succeed Demonstrated ability to leverage AI tools to improve workflows, streamline execution, or enhance outputs Product-first mindset with a focus on delivering business and user value Strong curiosity and interest in leveraging emerging AI technologies to enhance productivity and innovation Excellent communication skills and the ability to explain complex technical concepts to non-technical stakeholders Self-starter mentality with a high level of ownership and accountability Sounds interesting? We're waiting for your resume! This role is open to candidates in Poland . The specific salary for the successful candidate will be determined based on permissible, non-discriminatory factors such as skills and experience.

🏢 Summary: Senior Software Engineer role focused on designing scalable, resilient software and leading projects from architecture through production operations. The position includes setting technical direction, mentoring engineers, collaborating across product and design, and advancing AI-tool adoption. 🗂️ Requirements: 5+ years of professional software engineering experience, Experience building resilient, highly scalable applications, Experience mentoring and coaching engineers, Ability to make architectural decisions independently, Fluency in Polish and English 📃 Skills: Architecture, Datamodeling, Monitoring, AI, Security 🏢 Description: Why Housecall Pro? Help us build solutions that build better lives. At Housecall Pro, we show up to work every day to make a difference for real people: the home service professionals that support America’s 100 million homes. We’re all about the Pro, and dedicate our days to helping them streamline operations, scale their businesses, and—ultimately—save time so they can be with their families and live well. While our headquarters are based in Denver, Colorado, our team spans the globe, with teammates across Brazil, Poland, the Philippines, Mexico, and beyond. We care deeply about our customers and foster a culture where our company, people and Pros grow and succeed together—no matter where they’re based. Leadership is as focused on growing team members’ careers as they expect their teams to be on creating solutions for Pros. We also offer: Paid holidays and flexible, take-it-as-you-need-it scheduled time off A culture built on innovation that values big ideas, no matter where they come from A MacBook set up and ready from day one, plus a $500 stipend to design your ideal workspace Central European Time (CET) hours to support a balanced schedule for our Poland-based team Equity in a rapidly growing startup backed by top-tier VCs About the role As a Senior Software Engineer, you bring strong engineering fundamentals, deep problem-solving ability, and the capacity to navigate complex systems with clarity and intention. You focus on systems thinking, scalable architecture, and writing clean, maintainable code that delivers meaningful value to our customers. In this role, you will lead technical decision-making, drive projects from design through production operations, and collaborate closely with product, design, and engineering partners to shape impactful user experiences. You will help define and champion technical best practices, elevate the quality of our systems, and mentor fellow engineers as the team continues to grow. Our engineering culture is passionate, empathetic, and driven by a shared mission: improving the lives of our service professionals, our Pros. Your contributions will play a critical role in enabling their success and strengthening the foundation of our product for years to come. Compensation: 6,200 - 8,000 USD per month (B2B) What you’ll do Build a product that improves users’ lives (75k unique daily users, 4.6 ⭐at App Store) 👉 Learn more about the HCP product Lead architecture discussions and drive system design, data modeling, and service reliability implementations that strengthen our platform Own projects end-to-end, from architecture and implementation to deployment and monitoring Collaborate closely with product, design, and engineering to deliver high-quality, maintainable, and high-performance software solutions Define and champion technical direction, standards, and best practices as we scale Continuously learn, share knowledge, and mentor developers across your team, giving feedback to junior developers and peers on technical designs, merge requests, and other areas Deliver solutions that underscore performance, stability, extensibility, supportability and security Lead AI tool adoption strategies and encourage best practices across your team Qualifications 5+ years of professional software engineering experience Experience designing and building resilient and highly scalable applications Experience mentoring and coaching less experienced engineers Ability to operate independently, make sound architectural decisions, and deliver in fast-moving environments Product-first mindset with a focus on delivering business and user valueInterest in leveraging AI technologies to enhance productivity, quality, and innovation This position requires fluency in both Polish and English What will help you succeed Demonstrated ability to leverage AI tools to improve workflows, streamline execution, or enhance outputs Product-first mindset with a focus on delivering business and user value Strong curiosity and interest in leveraging emerging AI technologies to enhance productivity and innovation Excellent communication skills and the ability to explain complex technical concepts to non-technical stakeholders Self-starter mentality with a high level of ownership and accountability Sounds interesting? We're waiting for your resume! This role is open to candidates in Poland . The specific salary for the successful candidate will be determined based on permissible, non-discriminatory factors such as skills and experience.