Senior Software Engineer

🏢 Summary: Hybrid Tech Lead role responsible for driving technical direction across backend and frontend, ensuring scalability, performance, and code quality. The position involves hands-on full‑stack development, architectural decision-making, and leading a cross-functional product team. You will own API design, database architecture, and UI implementation while mentoring engineers and aligning technology with product goals. 🗂️ Requirements: 5+ years commercial experience with PHP 7+, Strong experience designing and maintaining scalable backend systems, Proficiency in PostgreSQL schema design and query optimization, Production experience with React, Experience with TypeScript, Ability to design and maintain RESTful APIs, Strong knowledge of SOLID principles and design patterns, Experience with Git and automated testing tools, Hands-on Tech Lead experience, Experience working in cross-functional product teams, Active usage of AI coding tools, Ability to write and communicate technical documentation in English 📃 Skills: PHP, PostgreSQL, React, TypeScript, REST, Git, PHPUnit, PHPStan, CSFixer, SOLID, Figma, Copilot, ChatGPT, Claude 🏢 Description: About SINGU At SINGU , we’re redefining how the world’s most ambitious real estate companies run their operations. Our mission is to become Europe’s leading platform for managing warehouse, logistics, retail, and multi-site commercial real estate portfolios — empowering our Clients to protect revenue, boost efficiency, and unlock new value across every aspect of their business. Our unified CAFM platform already powers the daily operations of over 250 million m² of real estate worldwide , supporting more than 500,000 professionals. Following our union with the UK’s Micad and Germany’s net-haus, we now help manage 100,000+ buildings across 35+ countries — and we’re just getting started. Backed by a leading growth equity investor, we’re scaling rapidly and partnering with global leaders such as Prologis, ECE, CTP, Hillwood, Logicor, GLP, and Unibail-Rodamco-Westfield. As we continue to grow through strategic acquisitions and bold innovation, we stay true to our core values: adaptability, collaboration, and client focus. If you’re ready to help build Europe’s leading platform for property operations — and make a tangible impact on how the real estate industry works — join SINGU and be part of this transformation. Build the architecture for SINGU's newest revenue line — Project Tracker. The product Project Tracker is SINGU's new module for managing CAPEX/OPEX projects across commercial real estate portfolios. MVP went live early this year. Foundations work, but the architecture for the next few years is still open. Traction is real: 294 people from 110 clients on the waitlist (Prologis, Mapletree, NEPI, Globalworth, Segro). After a demo, Prologis's Director of Global Operations asked for early access. Separately priced module – a revenue line, not a free feature. Alongside Project Tracker, we have several AI initiatives in active development across the platform. As Tech Lead you won't be siloed in one module – you'll have visibility and a seat at the table on the broader AI work shaping where the product goes next. The team Small and co-located in our Kraków office: a PM, a UX designer, a backend developer, a fullstack developer, and a mobile developer, QA sits in a dedicated team alongside us. You'll work shoulder-to-shoulder on the same floor. The stack PHP 8 on Phalcon (monolith), PostgreSQL, React 18 in parts of the UI, TypeScript. What you'll do – honestly This isn't a pure tech role. You'll juggle: Architecture: decisions that stick for years on a module still finding its shape. Requirements analysis & work decomposition: turning client needs into shippable scope. Hands-on development: you ship code. People work: knowing when to call the shot and when to trust the team. What we're looking for: 5+ years commercial PHP (8+), confident with Git, PHPUnit, PHPStan, CSFixer. Fluent in PostgreSQL (schema, performance, migrations). Production React (TypeScript preferred). SOLID, design patterns, REST API design as second nature. You actively use AI tools (Copilot, ChatGPT, Claude) – expected, not nice-to-have. Tech Lead experience: either proven, or you've been making technical and architectural decisions as a senior and are ready to step into the role Polish fluent enough to work daily with the team. English good enough to run client meetings: our clients are a mix of Polish and international, so you'll switch between both depending on the call. Nice-to-haves: Flutter, AWS, Kubernetes/Docker/CI, experience with Phalcon or similar lightweight PHP frameworks. Honest notes Project Tracker is early – a new module still in active development. The MVP is live, but the product is taking shape and you're shaping its architecture, not inheriting it The role is a mix. Hands-on + architecture + analysis + people. If you want to stop coding, this isn't it. No on-call for this role. The practical stuff Salary: 20,000–25,000 PLN net B2B / 16,600–20,750 PLN gross UoP. Hybrid: 2–3 days/week from Kraków office. Top-notch Apple equipment , private healthcare (dental + vision), life and health insurance, sport card, annual training budget, commute subsidy, referral programme, extra day off for medical check-ups, annual team offsite. If this role sounds like a good fit, we’d love to hear from you. Apply and help us build technology that supports critical operations every day.

🏢 Summary: The role involves owning end-to-end product design for a B2B SaaS platform, translating user insights, business goals, and technical constraints into effective product solutions. You will work within a cross-functional team to improve core user experiences, strengthen the design system, and enhance usability across the application. The position focuses on delivering measurable UX improvements and contributing to a scalable design system. 🗂️ Requirements: Proven product design experience in a product-led environment, Experience designing B2B SaaS products, Ability to own design process end to end, Proficiency in Figma including components, variants, auto-layout, Experience with qualitative research methods, Ability to incorporate user insights into product decisions, English proficiency at B2/C1 level or higher 📃 Skills: Figma, UX, UI, SaaS, B2B, Research, DesignSystems, Prototyping 🏢 Description: ABOUT THE COMPANY We're building Europe's leading platform for managing warehouse, logistics, retail, and multi-site commercial real estate portfolios. Our unified facilities management platform already powers the daily operations of over 250 million m² of real estate worldwide, supporting more than 500,000 professionals across 100,000+ buildings in 35+ countries. We're backed by a leading growth equity investor, scaling rapidly through strategic acquisitions and organic growth, and partnering with some of the world's largest real estate operators. The mission is to give our clients the tools to protect revenue, boost efficiency, and unlock new value across every aspect of their operations. ABOUT THE ROLE As a Product Designer, your role is to solve meaningful user problems through strong product experiences that support our business goals. You'll own design outcomes end to end — turning user insights, business needs, and technical constraints into clear, effective solutions. You'll work within a cross-functional product team alongside a Product Manager, Tech Lead, and Engineers, shaping solutions and making informed trade-offs. Your work will directly impact the quality, usability, and coherence of the application. You'll also contribute to the design system and help raise UX quality across the product, bringing user research and data into everyday product decisions. WHAT SUCCESS LOOKS LIKE IN YOUR FIRST 6–12 MONTHS Core product experiences improved Deliver improvements to core product experiences that more clearly communicate value and better support users in their daily work. Key experience metrics moved Reduce friction in critical user flows and increase clarity and efficiency in everyday workflows, reflected in measurable experience metrics. Design system strengthened Evolve the design system to improve consistency across the application and reduce design-to-development effort for the product teams. WHAT WE LOOK FOR Product design experience in a product-led company A track record of owning design outcomes end to end in a product-led environment — not just executing briefs, but shaping solutions from problem through delivery. B2B SaaS background Experience designing for B2B SaaS products, with an understanding of the complexity and workflow density that enterprise users deal with daily. Figma proficiency Strong practical Figma skills — components, variants, auto-layout, and design systems work. Qualitative research Experience with qualitative research methods and the ability to bring user insight into everyday product decisions, not just dedicated research sprints. Strong communication in English Confident written and spoken English at B2/C1 level or above. You'll work closely with international colleagues and need to articulate design decisions clearly. THE TEAM You'll join a cross-functional product team working directly with a Product Manager, Tech Lead, and Engineers. The team is experienced, engaged, and operates with a collaborative, innovation-friendly culture. English is the working language across international teams. COMPENSATION & BENEFITS Salary 168,000 – 240,000 PLN per year. Private healthcare Private healthcare including life and health insurance, plus an extra day off for medical check-ups. Learning and development Annual budget for training and education. Flexible working Flexible working hours within a hybrid model. Team offsite Annual team offsite. Equipment Top-notch equipment provided. Referral programme Financial rewards for successful employee referrals. Perks Monthly themed breakfasts.

🏢 Summary: Hands-on Technical Lead (.NET) role focused on designing and delivering scalable, high-performance software solutions for logistics platforms. The position combines architectural decision-making, microservices and cloud-based system design with active coding and team leadership. You will drive technical direction, ensure best engineering practices, and oversee Azure-based cloud environments and CI/CD processes. 🗂️ Requirements: 8+ years of software engineering experience, Minimum 2 years in technical leadership role, Strong experience with .NET and C#, Experience designing and developing scalable RESTful APIs, Knowledge of microservices architecture and design patterns, Experience with message queues, Experience with relational or NoSQL databases, Experience with Azure and GCP cloud services, Experience with Docker and Kubernetes, Experience with CI/CD practices, Experience with Agile methodologies, Experience managing software releases and performance monitoring, Advanced English proficiency (B2+) 📃 Skills: .NET, C#, Node.js, REST, Microservices, RabbitMQ, Kafka, MySQL, MongoDB, CosmosDB, Azure, GCP, Docker, Kubernetes, CI/CD, Agile 🏢 Description: As Technical Lead (.NET) you join a team of talented engineers and developers working together to transform final mile logistics and supply chain operations.  Your role will be a hands-on leadership position where you guide engineering teams to deliver scalable, high-quality software solutions. This is the perfect role for experienced engineers who thrive in technical decision-making, architecture, and mentorship—while staying engaged in hands-on coding. Key Responsibilities: Define the technical direction, making pivotal design decisions to ensure our architecture is scalable, maintainable, and high performing. Stay hands-on with coding, leading by example and ensuring adherence to best practices in security, performance, development, deployment and observability. Implement scalable microservices, API gateways, and event-driven architectures, ensuring high availability, disaster recovery and fault tolerance strategies are in place. Champion high-quality code testing, automation testing, and continuous integration/continuous deployment (CI/CD). Oversee Azure-based cloud architecture, optimizing performance, security, and cost efficiency. Directly supervise, mentor, and develop a team of 5-7 engineers, providing career guidance and fostering a culture of engineering excellence full of collaboration, accountability and professional growth. Actively recruit and interview top talent to strengthen the engineering team. Collaborate with Product Managers to align roadmap priorities, streamline development workflows, and enhance team processes for improved efficiency and operational excellence. Optimize development workflows and SDLC processes to improve team velocity, efficiency and maintain low cycle times. Establish engineering KPIs and leverage data-driven insights to enhance performance. Stay updated with industry trends and emerging technologies to continuously improve our platform. Requirements: 8+ years in software engineering (ideally .NET C#), with at least 2 years in a technical leadership role. Experience in other tech stacks like Node.js as a plus. Demonstrated expertise in designing and developing scalable APIs, with knowledge of RESTful principles and best practices. Knowledge of microservices architecture and related design patterns / best practices. Experience with message queues (e.g., RabbitMQ, Kafka) and event-driven architecture / patterns. Experience with databases such as MySQL, MongoDB, CosmosDB or similar. Experience utilizing cloud services (Azure and GCP) and containerization (Docker, Kubernetes). Experience with Agile methodologies and CI/CD practices. Experience in managing software releases, performance monitoring, and reliability improvements. Strong problem-solving skills and ability to work in a fast-paced environment. Ability to explain complex technical concepts to engineers, executives, and cross-functional teams. Advanced proficiency in English, both written and spoken (B2+). Office location: Kraków, Poland Work Style: hybrid (2-3 days from the office / week preferred) Salary levels: 28 000 – 32 000 PLN/ month Take the next step in your career and become a part of OneRail’s exciting journey!

🏢 Summary: Technical leadership role focused on evolving and scaling a modular Java/Jakarta EE car-sharing platform, bridging engineering and company leadership. The position combines hands-on backend development, cloud infrastructure ownership, architecture decisions, and CI/CD optimization with team mentoring and operational responsibility. You will drive infrastructure improvements, security initiatives, and technical debt reduction while ensuring high availability and quality standards. 🗂️ Requirements: Several years of backend development experience with Java (Jakarta EE / Java EE / Spring) in production, Strong experience with Test-Driven Development (TDD), Proven experience as Tech Lead or Senior Engineer with team responsibility, Solid understanding of cloud infrastructure, ideally AWS (EC2, ECS, CloudWatch, S3), Experience with MongoDB or comparable NoSQL databases in production, Experience with CI/CD pipelines (GitLab CI, GitHub Actions, or similar), Ability to take ownership and deliver value independently 📃 Skills: Java, JakartaEE, Spring, AWS, EC2, ECS, CloudWatch, S3, MongoDB, NoSQL, GitLabCI, GitHubActions, TDD, Terraform, CloudFormation, React, ReactNative, Sentry, Crashlytics 🏢 Description: About Us We develop and operate an end-to-end platform for car sharing and vehicle rental, currently used by customers in Germany, Austria, and Spain. The platform is fully white-label capable and includes mobile apps, web applications, back-office tools, and integrations with telematics hardware, payment service providers, and KYC providers — all from a single, modular codebase. The backend is based on Java 17 / Jakarta EE 10 Payara , while the frontend is built with React / React Native . We are currently in a strategic growth phase and are now looking for an experienced technical leader to help shape the next stage of our development. The Role As Tech Lead , you will take on a central bridging role between Engineering and company leadership. You will work closely with the CTO, support them operationally, and ensure that the platform keeps pace with the company’s growth — both technically and organisationally. This position is designed for someone who can dive deep into the code while also keeping the bigger picture in mind. You are not afraid of a mature system with history — you see it as an opportunity. Technical Leadership & Architecture Further development and maintenance of the modular Java / Jakarta EE platform, including shared responsibility for architectural decisions Implementation of the identified infrastructure improvements: IaC Terraform / CloudFormation, multi-region setup, and disaster recovery plan Responsibility for implementing outstanding security measures Driving the migration of binary data from MongoDB to S3, as well as further technical debt reduction projects Evaluation and further development of the CI/CD pipelines GitLab CI and test coverage Processes & Team Organization Establishment of formal code review processes and consistent planning cycles within the development team Close collaboration with the CTO on the gradual handover of engineering and operational responsibilities Support in building a product management process aligned with customer requirements Mentoring of the junior frontend developer and support for the senior engineers Operations & Quality Shared responsibility for monitoring, alerting, and incident response AWS CloudWatch, Sentry, Crashlytics Automation of dependency vulnerability scanning within the CI pipeline Technical support for customer projects — from onboarding through to troubleshooting Must-Have Several years of experience in backend development with Java — Jakarta EE / Java EE / Spring — in production systems Strong experience with Test-Driven Development (TDD), as well as a strong quality mindset and interest in software craftsmanship Proven experience as a Tech Lead or Senior Engineer with team responsibility Solid understanding of cloud infrastructure, ideally AWS — EC2, ECS, CloudWatch, S3 Experience with MongoDB or comparable NoSQL databases in production environments Familiarity with CI/CD pipelines — GitLab CI, GitHub Actions, or similar — and modern deployment practices Hands-on mentality: you can deliver value immediately without requiring months of onboarding Nice-to-Have Knowledge of Infrastructure as Code — Terraform or CloudFormation Experience with React and/or React Native on the frontend Understanding of the mobility, car-sharing, or vehicle rental domains Experience in regulated environments or with GDPR compliance projects Knowledge of telematics hardware integrations or IoT-related systems Class B driving licence What We Offer One of the most technically impressive small platforms in the German mobility landscape — with real responsibility from day one Short decision-making paths and a high degree of freedom to shape things A well-established team with 5–10 years of shared platform history A modern tech stack: Java 17, Jakarta EE 10, React, React Native, GitLab CI/CD — without legacy burden 99.9% uptime — efficiency here is not an ambition, but a reality Hybrid working with an office in Berlin and flexible working hours Competitive salary, depending on experience and qualifications Active involvement in the strategic development of the company How to Apply We look forward to receiving your application — preferably including a short cover note, your CV, and, where relevant, references or GitHub projects. A formal cover letter is not required; we value genuine interest and technical depth more than formalities.

🏢 Summary: Remote Team Lead Software Development role focused on leading a cross-functional engineering team while staying hands-on with backend and web service architecture and implementation in a .NET environment. The position combines technical leadership, product collaboration, and ownership of architectural decisions in an agile setup. You will drive engineering quality, technical standards, and team growth while contributing directly to code and system design. 🗂️ Requirements: Several years of experience in software development with .NET / C#, Minimum 3 years of experience leading development teams, Strong knowledge of software design patterns, Strong understanding of system architecture, Experience with modern engineering practices, Hands-on experience with backend and web services development, Experience using AI in software development process, Fluent English 📃 Skills: .NET, C#, AI, Elasticsearch, RabbitMQ, Redis, Azure, CI/CD, Umbraco, Containers, Backend, WebServices, Architecture, Agile 🏢 Description: Does building awesome, innovative products that add up to something meaningful sound like a dream come true? Come join us and make that vision a reality! About We are looking for an experienced Team Lead Software Development who combines strong technical expertise with leadership skills and a product-oriented mindset. In this role, you will take ownership of development teams, supporting both its technical direction and people development. You will lead a cross-functional engineering team of around 7–9 people , including Frontend, Backend, and QA specialists. The team works in an agile setup and collaborates closely with a Product Owner, UX Design, DevOps, and ITOps. Responsibilities Lead, coach, and support the development of your engineering team Help your team grow into a high-performing, self-organized unit Act as a sparring partner for the Product Owner and actively contribute to roadmap planning and prioritization Stay hands-on with the design, architecture, and implementation of backend and web services Make and own technical decisions, while communicating them clearly to stakeholders Improve agile processes within the team and continuously optimize the way of working Contribute to solution and domain design Strengthen engineering quality, good practices, and technical standards Take part in recruitment interviews and support the further development of the team Our offer Competitive salary on B2B contract Fully remote position Real impact and independence at work Individual career path Work-life balance A non-corporate atmosphere where innovation, personal growth, and teamwork thrive 100+ smart, curious & ambitious engineers What you bring Several years of experience in software development with .NET / C# At least 3 years of experience leading development teams, both technically and people-wise Experience using AI in the software development process Strong understanding of software design patterns, system architecture, and modern engineering practices A hands-on approach and the ability to stay close to the code when needed Strong communication skills and the ability to explain technical topics clearly to both technical and non-technical stakeholders A pragmatic mindset — you care about quality, but you also understand business priorities Fluent English, German is a plus Nice to have Experience with Elasticsearch, RabbitMQ, Redis, containers, Azure Cloud, CI/CD, Umbraco Experience working in a scale-up environment Knowledge of the financial market or financial products Benefits International Projects Small Teams Flat Structure Friendly Atmosphere Flexible Hours Individual Career Path We want your TALENT! Don’t hesitate and APPLY! We are happy to tell you more details about this position in a phone call. Our recruitment process is very fast and straightforward to ensure a great experience from the first interview to joining your dream team!

🏢 Summary: Hands-on Java Tech Lead role focused on owning architecture, design, and delivery of business-critical distributed systems in a global financial services environment. The position combines technical leadership with active development, guiding engineers and driving architectural decisions across microservices-based platforms. Hybrid work model in Krakow with a long-term employment contract and competitive salary. 🗂️ Requirements: 9+ years of software engineering experience (backend or full-stack), Strong hands-on experience with Java and Spring, Experience designing large-scale distributed systems, Solid understanding of microservices architecture, Experience with SQL databases and Hibernate, Experience with messaging systems (Kafka), Experience building and maintaining CI/CD pipelines, Minimum 2+ years in a Tech Lead or Architect role, Proven experience leading teams and driving architectural decisions, Experience mentoring engineers, Fluent English, Experience working in Agile environments, Understanding of REST APIs, queues, and pub-sub patterns, Familiarity with Docker and Kubernetes or OpenShift 📃 Skills: Java, Spring, SQL, Hibernate, Kafka, Microservices, CI/CD, Docker, Kubernetes, OpenShift, REST, Angular 🏢 Description: We are hiring on behalf of our client – a global financial services organization recognized for its premium service, deep domain expertise, and strong technology-driven approach. The company partners with clients, helping them solve complex challenges across investor services and capital markets. Their culture is built on collaboration, knowledge sharing, and empowering individuals to contribute beyond their immediate role. We are looking for a Java Tech Lead who will take ownership of the architecture, design, and delivery of business-critical applications forming the backbone of the company’s process ecosystem. This is a hands-on leadership role, combining technical depth with team leadership. You will guide engineers, shape architectural decisions, and build scalable, resilient systems that directly impact business operations. Key takeaways: Stack: Java, Spring, SQL, Hibernate, Kafka, microservices, CI/CD, Docker/Kubernetes Salary: 27 000 - 30 500 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office Location: ul. Klimeckiego, Krakow Recruitment process : A call with MOTIFE Recruiter Technical Interview Behavioral Interview Responsibilities: Technical Leadership Lead and mentor a team of engineers, supporting their growth and development. Define and promote best practices in architecture, coding standards, and system design. Facilitate technical discussions and drive key architectural decisions. Architecture & System Design Design and build scalable distributed systems used by internal and external stakeholders. Own end-to-end architecture for low-code/no-code platforms and business process solutions. Ensure systems meet requirements for scalability, security, resiliency, and performance. Delivery & Engineering Excellence Oversee the development lifecycle, ensuring high-quality and timely delivery. Conduct code reviews and enforce engineering standards across the team. Identify risks and proactively address technical challenges. Collaboration & Stakeholder Management Partner with business stakeholders to translate requirements into technical solutions. Communicate effectively across technical and non-technical teams. Support hiring processes and contribute to building a strong engineering team. Innovation & Platform Evolution Drive adoption of modern tools, frameworks, and architectural patterns. Lead initiatives around automation, CI/CD pipelines, and engineering efficiency. Conduct technical research and recommend improvements to the technology stack. Requirements: Technical Expertise 9+ years of experience in software engineering (backend or full-stack). Strong hands-on experience with Java and Spring ecosystem. Proven experience designing large-scale distributed systems. Solid understanding of microservices architecture. Experience with SQL databases, Hibernate, and messaging systems (e.g., Kafka). Experience building and maintaining CI/CD pipelines. Leadership Experience Minimum 2+ years in a technical leadership role (Tech Lead / Architect). Proven track record of leading teams and driving architectural decisions. Experience mentoring engineers and supporting their career growth. Collaboration & Mindset Strong communication skills with fluent English. Comfortable working in Agile environments. Ability to balance hands-on work with leadership responsibilities. Domain & Additional Knowledge Understanding of enterprise integration patterns (REST APIs, queues, pub-sub). Familiarity with cloud platforms and containerization (Docker, Kubernetes, OpenShift). Exposure to frontend technologies (Angular is a plus). What we offer: Private medical care Life insurance Professional training and certification support Social fund benefits platform Stable employment with a long-term contract Apply now Take the next step in your career and lead the development of scalable, high-impact systems in a modern engineering environment! Please apply via our careers page and submit your CV in English.

🏢 Summary: Hands-on Java Tech Lead role responsible for architecture, design, and delivery of scalable, business-critical distributed systems in a financial services environment. The position combines technical leadership with active development, driving architectural decisions, engineering standards, and CI/CD initiatives. You will lead a team to build resilient microservices-based solutions impacting core business processes. 🗂️ Requirements: 9+ years software engineering experience, Strong hands-on Java experience, Strong experience with Spring ecosystem, Experience designing large-scale distributed systems, Solid knowledge of microservices architecture, Experience with SQL databases, Experience with Hibernate, Experience with messaging systems, Experience building and maintaining CI/CD pipelines, Minimum 2+ years in technical leadership role, Proven experience leading engineering teams, Experience driving architectural decisions, Understanding of REST APIs and integration patterns, Experience with containerization technologies, Fluent English 📃 Skills: Java, Spring, SQL, Hibernate, Kafka, Microservices, CI/CD, Docker, Kubernetes, OpenShift, REST, Angular 🏢 Description: We are hiring on behalf of our client – a global financial services organization recognized for its premium service, deep domain expertise, and strong technology-driven approach. The company partners with clients, helping them solve complex challenges across investor services and capital markets. Their culture is built on collaboration, knowledge sharing, and empowering individuals to contribute beyond their immediate role. We are looking for a Java Tech Lead who will take ownership of the architecture, design, and delivery of business-critical applications forming the backbone of the company’s process ecosystem. This is a hands-on leadership role, combining technical depth with team leadership. You will guide engineers, shape architectural decisions, and build scalable, resilient systems that directly impact business operations. Key takeaways: Stack: Java, Spring, SQL, Hibernate, Kafka, microservices, CI/CD, Docker/Kubernetes Salary: 27 000 - 30 500 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office Location: ul. Klimeckiego, Krakow Recruitment process : A call with MOTIFE Recruiter Technical Interview Behavioral Interview Responsibilities: Technical Leadership Lead and mentor a team of engineers, supporting their growth and development. Define and promote best practices in architecture, coding standards, and system design. Facilitate technical discussions and drive key architectural decisions. Architecture & System Design Design and build scalable distributed systems used by internal and external stakeholders. Own end-to-end architecture for low-code/no-code platforms and business process solutions. Ensure systems meet requirements for scalability, security, resiliency, and performance. Delivery & Engineering Excellence Oversee the development lifecycle, ensuring high-quality and timely delivery. Conduct code reviews and enforce engineering standards across the team. Identify risks and proactively address technical challenges. Collaboration & Stakeholder Management Partner with business stakeholders to translate requirements into technical solutions. Communicate effectively across technical and non-technical teams. Support hiring processes and contribute to building a strong engineering team. Innovation & Platform Evolution Drive adoption of modern tools, frameworks, and architectural patterns. Lead initiatives around automation, CI/CD pipelines, and engineering efficiency. Conduct technical research and recommend improvements to the technology stack. Requirements: Technical Expertise 9+ years of experience in software engineering (backend or full-stack). Strong hands-on experience with Java and Spring ecosystem. Proven experience designing large-scale distributed systems. Solid understanding of microservices architecture. Experience with SQL databases, Hibernate, and messaging systems (e.g., Kafka). Experience building and maintaining CI/CD pipelines. Leadership Experience Minimum 2+ years in a technical leadership role (Tech Lead / Architect). Proven track record of leading teams and driving architectural decisions. Experience mentoring engineers and supporting their career growth. Collaboration & Mindset Strong communication skills with fluent English. Comfortable working in Agile environments. Ability to balance hands-on work with leadership responsibilities. Domain & Additional Knowledge Understanding of enterprise integration patterns (REST APIs, queues, pub-sub). Familiarity with cloud platforms and containerization (Docker, Kubernetes, OpenShift). Exposure to frontend technologies (Angular is a plus). What we offer: Private medical care Life insurance Professional training and certification support Social fund benefits platform Stable employment with a long-term contract Apply now Take the next step in your career and lead the development of scalable, high-impact systems in a modern engineering environment! Please apply via our careers page and submit your CV in English.

🏢 Summary: Backend Tech Lead role focused on leading and implementing a strategic rewrite of a core financial platform module into a modern, scalable architecture. The position combines hands-on Java/Spring Boot development with architectural decision-making, API design, and integration across multiple enterprise banking systems. It involves designing high-performance backend services handling large transactional and reporting datasets. 🗂️ Requirements: 7+ years backend or fullstack development experience, Strong Java expertise, Strong Spring Boot expertise, Experience designing REST APIs, Experience as Tech Lead or technical owner, Experience designing scalable and distributed systems, Strong relational database design skills (PostgreSQL), Experience with Elasticsearch or similar search technology, Experience integrating external systems via REST or GraphQL, Experience with Docker and Kubernetes, Experience with CI/CD pipelines, Knowledge of OAuth2 and OIDC, Working knowledge of React, Working knowledge of TypeScript, Experience handling large datasets with complex queries, Ability to lead architecture and mentor developers 📃 Skills: Java, Spring, SpringBoot, REST, GraphQL, PostgreSQL, Elasticsearch, Docker, Kubernetes, CI/CD, OAuth2, OIDC, React, TypeScript, SQL, Microservices, DistributedSystems 🏢 Description: Our client is an international financial technology company building solutions that support transaction communication, balances visibility, reporting, and integrations across multiple banking systems . We are looking for a Backend Tech Lead to join a strategic rewrite of a core platform module. The role combines technical leadership with hands-on backend development , helping redesign a legacy component into a modern, scalable architecture. You will work closely with product stakeholders, platform engineers, and frontend teams to design and implement reliable, high-performance backend services that integrate multiple enterprise systems. IN SHORT: 🌍 Remote work or on-site (Wrocław, Bielsko-Biała) – your choice! 💰 170 - 190 PLN/h + VAT ☑️ B2B contract Your Daily Missions Lead the design and development of backend services for a core platform rewrite. Design scalable services responsible for transactions, balances, statements, and reporting data . Define API contracts and integration patterns between backend services, frontend applications, and external enterprise systems. Make key decisions around data modeling, search/indexing strategies, and performance optimization for million-row datasets with complex filtering, sorting, and pagination . Support frontend teams by ensuring API-first design and smooth integration with React applications . Ensure engineering quality through code reviews, architecture discussions, and mentoring other developers . Collaborate closely with product, frontend, and platform teams to deliver robust, production-ready systems . The Essentials We're Seeking 7+ years of experience in backend or fullstack software development. Strong expertise in Java and Spring Boot , including designing modular backend services and REST APIs. Experience acting as a Tech Lead or technical owner responsible for architectural decisions. Solid experience designing scalable APIs and distributed systems . Strong understanding of data modeling in relational databases (e.g., PostgreSQL) and designing efficient query patterns. Practical experience with Elasticsearch (or similar search/indexing technologies) for filtering, search, and aggregation over large datasets. Experience designing hybrid data architectures combining multiple data sources . Experience working with external system integrations , including REST or GraphQL APIs. Familiarity with containerized environments (Docker, Kubernetes) and modern CI/CD pipelines. Understanding of security patterns in enterprise systems (OAuth2, OIDC, authentication and authorization flows). Working knowledge of React and TypeScript , enabling effective collaboration with frontend teams. Proven ability to break down complex architectural changes into manageable development phases . Experience using AI-assisted development tools (e.g., Cursor, Claude Code, or similar agentic coding tools) and openness to experimenting with AI-driven approaches to improve development efficiency and engineering workflows . Ability to combine hands-on engineering with technical leadership and mentoring . Nice-to-Haves Experience in FinTech, banking, or enterprise integration platforms . Experience with large-scale transactional or reporting systems . Experience with GraphQL integrations . Experience with data migration or legacy system modernization . Experience designing API-first platforms . Familiarity with observability practices (logging, metrics, tracing). Understanding of database partitioning and query optimization patterns . Reasons Why You Would Enjoy Working With Us We work in the latest technologies and with international clients, and our projects are polished from < to /> - learn about some of the projects we have completed. We organize TechTalks, meet-ups and create guilds where we exchange knowledge - you can learn a lot from your teammates. We have a close-knit team and we make sure to have regular integrations - we often go out to celebrate together. You can work remotely or choose to work from our offices in Wroclaw or Bielsko-Biala. However, we count on your openness to occasionally visit the office for team meetings or client visits, or possible occasional trips to the client's headquarters. You can adjust your working hours to suit your needs, starting your day between 7:00 and 10:00 am. You can work with great specialists in their fields who also have a sense of humor and other after-hours hobbies. It is the people who create the unique atmosphere and relaxed atmosphere at CSHARK. We have a flat structure - we are not a corporation and don't want to be one 🙃. We offer bonuses for employee referrals (from 3000 PLN to 7000 PLN). We organize remote English classes and provide access to the company library. You can also become an author/author of articles published on our technical blog - https://cshark.com/blog/ .

🏢 Summary: Senior PHP Developer role focused on delivering customizations and dedicated functionalities for large enterprise clients within a CAFM platform. The position involves building and adapting backend modules, implementing REST APIs, and handling complex data imports and system integrations with strong emphasis on security, performance, and database optimization. Hybrid work model based in Kraków. 🗂️ Requirements: 5+ years commercial experience in PHP backend development, Expert knowledge of relational databases, especially PostgreSQL, Experience in designing and implementing REST APIs, Experience building data import pipelines and external system integrations, Strong knowledge of secure coding practices and data protection, Strong focus on database performance, scalability, query optimization, Ability to design, develop and deploy solutions independently, Fluent English, Fluent Polish 📃 Skills: PHP, Phalcon, PostgreSQL, SQL, REST, API, React, Docker 🏢 Description: About SINGU At SINGU , we’re redefining how the world’s most ambitious real estate companies run their operations. Our mission is to become Europe’s leading platform for managing warehouse, logistics, retail, and multi-site commercial real estate portfolios — empowering our Clients to protect revenue, boost efficiency, and unlock new value across every aspect of their business. Our unified CAFM platform already powers the daily operations of over 250 million m² of real estate worldwide , supporting more than 500,000 professionals. Following our union with the UK’s Micad and Germany’s net-haus, we now help manage 100,000+ buildings across 35+ countries — and we’re just getting started. Backed by a leading growth equity investor, we’re scaling rapidly and partnering with global leaders such as Prologis, ECE, CTP, Hillwood, Logicor, GLP, and Unibail-Rodamco-Westfield. As we continue to grow through strategic acquisitions and bold innovation, we stay true to our core values: adaptability, collaboration, and client focus. If you’re ready to help build Europe’s leading platform for property operations — and make a tangible impact on how the real estate industry works — join SINGU and be part of this transformation. We're looking for a Senior PHP Developer to join the Technical Account Management team , responsible for delivering customizations and dedicated functionalities for large enterprise clients, often international. The team focuses on adapting existing modules or building custom solutions tailored to specific customer needs. A significant part of the work involves data imports and system integrations , where security, data correctness, and database performance are critical. This is a hybrid position based in Kraków – 2-3 days per week from the office. Tech Stack Backend: PHP (Phalcon framework) Database: PostgreSQL Architecture: REST APIs, data-heavy integrations Frontend: React What You'll Bring To The Team Must-haves: Strong commercial experience in PHP backend development (5+ years) Expert-level knowledge of relational databases, especially PostgreSQL – query optimization, indexing, execution plans Proven experience in designing and implementing REST APIs Experience building and maintaining data import pipelines and external system integrations High attention to application security (secure coding practices, input validation, data protection) Strong focus on performance and scalability , especially for database-heavy and high volume operations Ability to take full ownership of delivered solutions – from design to deployment Fluent English and Polish to ensure smooth communications with team colleagues and clients Nice-to-haves: Familiarity with React Experience with the Phalcon framework Experience with PostgreSQL performance tuning Knowledge of Docker and containerized development environments Background in customization-heavy or enterprise systems Experience working in a product-oriented organization What We Offer 💰 Competitive Salary Range - Depending on your experience, we offer between 19'000 - 22'000 PLN net on a B2B contract , or between 15'770 – 18'260 PLN gross on Contract of Employment . 🤝 A fantastic, engaged, and experienced team – Collaborate with passionate people who love what they do. 🎯 An environment open to innovation – We embrace creativity and new ideas in a dynamic setting. 🏡 A family-like atmosphere with a "you" culture – in a company that values "we". 📚 Annual budget for training & education – Invest in yourself with a dedicated budget for learning & development—no need to take a day off, it’s included in your working hours! 🕘 Flexible working hours – Work the way that suits you best. 🩺 Private healthcare (including dental & vision care) – Your well-being is important to us. 📆 Extra day off for medical check-ups – Because your health comes first. 🌍 Annual team offsite – Spend time with the team in a beautiful location. 🍏 Top-notch Apple equipment – The best tools to do your best work. 🥐 Monthly themed breakfasts – Start your day with great food & company 🎁 Referral Program – Get rewarded for bringing great people on board.

🏢 Summary: Tech Lead role in a greenfield fintech platform within the banking domain, responsible for shaping architecture and leading a cross-functional team. The position combines hands-on Java development with architectural decision-making in a microservices, event-driven environment. You will drive backend technical direction while collaborating closely on frontend integrations. 🗂️ Requirements: 7+ years commercial software development experience, Proven experience in Tech Lead role, Strong hands-on experience with Java, Strong knowledge of Spring ecosystem (Spring Boot, Spring MVC, Spring Cloud), Experience with microservices architecture, Experience with event-driven architectures, Practical experience with PostgreSQL or other relational databases, Understanding of frontend architectures (React and/or Flutter), Very good knowledge of fullstack application architecture, Experience with distributed systems, Fluent English 📃 Skills: Java, Spring, SpringBoot, SpringMVC, SpringCloud, PostgreSQL, Microservices, EventDriven, React, Flutter, SQL, DistributedSystems 🏢 Description: Salary: 1300 - 1600 PLN/MD on B2B Remote: hybrid from Gdynia / Gdańsk / Warszawa / Rzeszów / Kraków (2 days per week from the office) Why choose this offer? Opportunity to build a fintech platform from scratch (greenfield project) Real impact on architecture and core frontend services from day one Collaboration within a cross-functional, international team Work on a large-scale financial platform in the banking domain Project We are building a new fintech platform from the ground up for a financial institution operating in the banking products space . As a Tech Lead , you will own the technical direction of a cross-functional squad (developers, QA Engineer, Business Analyst) and ensure high-quality delivery across both backend and frontend layers . This is a hands-on leadership role - you will split your time between coding, architectural decision-making, and mentoring the team. The project is fully greenfield, giving you the opportunity to shape architecture, development standards, and engineering culture from day one. Each Tech Lead works closely with a Delivery Manager (shared across several teams). Responsibilities you'll have: Lead a cross-functional team through the full delivery lifecycle Own the squad’s technical direction, primarily on the backend , with awareness of frontend implications Design and evolve system architecture in a microservices and event-driven environment Ensure high code quality through reviews, standards, and best practices Collaborate with the Delivery Manager and Business Analyst to translate business needs into technical solutions Align with other Tech Leads to ensure architectural consistency across teams Identify, communicate, and mitigate technical risks and dependencies Contribute hands-on to development on a regular basis Communicate technical decisions and trade-offs clearly in English Expected competences and knowledge Minimum 7+ years of commercial experience in software development Proven experience in a Tech Lead role Strong hands-on expertise in Java and the Spring ecosystem (Spring Boot, Spring MVC, Spring Cloud) Understanding of frontend and client-side architectures , with exposure to React and/or Flutter (ability to collaborate efficiently with frontend/mobile developers, review high-level solutions, understand integration points and trade-offs) Very good understanding of fullstack application architecture Experience with event-driven architectures (message brokers, asynchronous communication, events) Practical knowledge of PostgreSQL or similar relational databases Experience working with microservices and distributed systems Strong mentoring and technical leadership skills Fluent English (spoken and written) Nice to have: Hands-on or architectural experience with React and/or Flutter Experience with Kafka or similar messaging/streaming platforms Familiarity with Google Cloud Platform (GCP) Experience with Kubernetes and containerized deployments Background in fintech or banking projects Experience building and scaling greenfield systems Technologies you'll work with Java Spring (Boot, MVC, Cloud) PostgreSQL Microservices Event-driven architecture Nice to have: React Flutter Kafka GCP Kubernetes Client – why choose this particular client from the Jit portfolio? The client is a fintech institution operating in the Kingdom of Saudi Arabia, focused on modernising its digital capabilities and expanding its offering for micro-SME customers . It is an organisation with a strong market presence and a clear strategic commitment to innovation, aiming to deliver banking experiences that are fully digital, user-friendly, and deeply integrated with day-to-day business needs. About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity . By supporting indigenous initiatives, we ensure the circulation of good energy. Wymagania Oczekujemy Oferujemy