June 8, 2026
Middle DevOps Engineer (with Kotlin)
Mid • Remote
Warsaw, Poland
Svitla Systems Inc. is looking for a DevOps Engineer with Kotlin for a full-time remote position (40 hours per week) in Europe. Our client is a global leader in mobile security, providing AI-driven, on-device protection for enterprise and government mobile applications and devices worldwide. The platform defends against mobile-targeted phishing (mishing), malware, application vulnerabilities, and zero-day exploits. This role partners with the client's research team and supports the "download and decrypt" services that underpin the platform.
You'll partner with the research engineering team to design, build, and operate the infrastructure behind a security-sensitive backend service. The role blends classic DevOps work (CI/CD, automation, observability, cloud) with hands-on contributions to the service code written in Kotlin. It is a hybrid DevOps and backend engineering role with Docker experience on top of a Kotlin/DevOps foundation.
This position consists of approximately 70% DevOps work and 30% backend development using Kotlin
Requirements:
Minimum 3–5 years of strong experience with DevOps.
Bachelor's degree in Computer Science / Engineering, or equivalent practical experience.
Hands-on experience in Kotlin development, including comfortable reading, extending, and shipping production Kotlin services, not just deploying them.
In-depth understanding of scripting in Python and/or Shell/Bash.
Knowledge of infrastructure and packaging tools, including JFrog, Ansible, Terraform, and CloudFormation.
Knowledge of databases such as SQL, Postgres, Elasticsearch, or Redis.
Hands-on experience with container technologies such as Docker (required) with Swarm or Kubernetes.
Strong understanding of AWS DevOps efforts and management.
Experience with Cloud IAM Groups, Roles, IAM policies, and STS.
Familiarity with CI/CD platforms such as TeamCity, GitLab CI, or GitHub Actions.
Practical experience implementing one or more observability platforms.
Willingness to continuously learn and improve.
Advanced knowledge of Docker (multi-stage builds, image hardening, runtime tuning). The services run as Dockerized backends on the client's infrastructure.
Exposure to security-sensitive engineering environments.
Responsibilities:
Design, develop, and support cloud and locally hosted solutions that make service deployment, availability, and operations straightforward.
Continuously improve processes and infrastructure to be easy to deploy, scalable, secure, and fault-tolerant.
Automate operational, testing, installation, and other processes to increase efficiency and stability.
Collaborate with the service development team to resolve complex operational issues and deliver value.
Document how to diagnose and resolve issues in complex systems.
Build CI/CD solutions to improve developer productivity and enable rapid deployments.
Support and extend existing service software written in Kotlin.
Collaborate with the team to establish and uphold DevOps best practices.
We offer:
US and EU projects based on advanced technologies.
Competitive compensation based on skills and experience.
Flexibility in workspace, either remote or our welcoming office.
Bonuses for article writing, public talks, and other activities.
Free tech webinars and meetups organized by Svitla.
Regular corporate online activities.
Awesome team, friendly and supportive community!
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Krakow, Poland
🏢 Summary: Full-time Senior Android Engineer role focused on developing and maintaining a high-performance Android application, delivering new features, ensuring architectural integrity, and optimizing app performance in a production environment. The position involves working with modern Android technologies and Clean Architecture principles to build scalable and maintainable solutions. The role requires collaboration with cross-functional teams and overlapping working hours until 8 PM CET. 🗂️ Requirements: 4+ years of professional Android development experience, Strong knowledge of Kotlin, Experience with Jetpack Compose (Compose UI), Solid understanding of Kotlin Coroutines and Structured Concurrency, Experience implementing Clean Architecture, Experience maintaining strict separation of Data, Domain, and Presentation layers, Experience working in production environments, Ability to design scalable and maintainable Android architectures 📃 Skills: Android, Kotlin, Jetpack, Compose, Coroutines, GraphQL 🏢 Description: Svitla Systems Inc. is looking for a Senior Android Engineer for a full-time position (40 hours per week) in Europe . Our client is one of the world’s largest and fastest-growing job sites. You'll join the team working on the Android application. This role involves both feature development and ongoing support, ensuring a high-performing, scalable, and user-friendly mobile experience by delivering new features, maintaining existing functionality, resolving bugs, and improving app performance and user experience. This role requires working hours with overlap till 8 PM CET. Requirements 4+ years of professional experience in Android development. Strong knowledge of Kotlin. Knowledge of Jetpack Compose (Note: this refers specifically to Compose UI, not general Android Jetpack components). Solid understanding of Kotlin Coroutines and Structured Concurrency. Experience implementing Clean Architecture. Experience maintaining strict architectural layer separation (Data / Domain / Presentation). Be passionate about modern Android development. Detail-oriented and performance-driven individual. Be comfortable working in production environments. Strong architectural mindset. The ability to balance new feature delivery with stability and maintainability. Nice to have Experience working with GraphQL. Responsibilities Design, develop, and maintain Android features using modern best practices. Implement scalable, maintainable solutions following Clean Architecture principles. Ensure strict separation of layers (Data, Domain, Presentation). Write high-quality, testable, and efficient Kotlin code. Optimize app performance and responsiveness. Troubleshoot, debug, and resolve production issues. Collaborate with cross-functional teams to deliver high-impact features. We offer US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!
Technology
Svitla Systems
Senior Full Stack Engineer (.NET, Java, Kotlin, Angular)
Senior
Remote
Warsaw, Poland
🏢 Summary: Full-time Senior Full Stack Engineer role focused on building and maintaining scalable backend services with .NET and Java/Kotlin, and contributing to frontend development with Angular. The position involves designing secure APIs, driving UI architecture, and working within Agile teams to deliver commercial software products. Approximately 20–30% of the role is dedicated to frontend development. 🗂️ Requirements: 5+ years of commercial software development experience, Strong experience with .NET (C#) backend development, Strong experience with Java or Kotlin backend development, Hands-on experience with Kotlin in backend environments, Knowledge of Angular and TypeScript, Experience designing and working with RESTful APIs and SOAP APIs, Understanding of backend architecture, performance, security, scalability, Knowledge of Azure Cloud and application deployment, Familiarity with Azure DevOps and CI/CD processes, Experience with modern web development practices, Experience working in Agile/Scrum environments, Bachelor’s degree in Computer Science or equivalent experience, Strong English communication skills 📃 Skills: .NET, C#, Java, Kotlin, Angular, TypeScript, REST, SOAP, Azure, AzureDevOps, CI/CD 🏢 Description: Svitla Systems Inc. is looking for a Senior Full Stack Engineer with .NET, Java, and Angular for a full-time position (40 hours per week) in Europe. Our client is a leading global provider that gathers information and reports to enhance the environmental and social impacts on the business. A Senior Engineer must have strong backend expertise in .NET and Java/Kotlin, as well as frontend experience in Angular. Requirements: 5+ years of commercial experience in software development. Strong experience with .NET (C#) and Java/Kotlin backend development. Hands-on experience with Kotlin in backend environments. Knowledge of Angular and TypeScript. Understanding of designing and working with RESTful APIs and SOAP APIs. Solid understanding of backend architecture, including performance, security, and scalability. Knowledge of Azure Cloud, including deployment and scaling of applications. Familiarity with Azure DevOps and CI/CD processes. Strong understanding of modern web development practices. Experience working in Agile/Scrum environments. Strong communication skills in English. Bachelor’s degree in Computer Science or equivalent experience. Responsibilities: Work within an Agile team to design, estimate, develop, test, and deliver commercial software products. Develop and maintain backend services using .NET and Java/Kotlin. Design and implement secure, scalable RESTful APIs and services. Contribute to frontend development using Angular and TypeScript (~20–30%). Drive UI architecture and develop reusable UI components. Ensure best practices and design guidelines for UI and backend development. Write clean, maintainable, and efficient code for both client-side and server-side applications. Develop unit and integration tests; collaborate with QA to resolve issues. Collaborate with Product Owners and stakeholders to refine requirements and user stories. Contribute to project estimation, planning, timelines, and status updates. Provide technical guidance and mentorship where needed. We offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!
Technology
Svitla Systems
Senior Back End Engineer with AI/LLM experince
Senior
Remote
Warsaw, Poland
🏢 Summary: Full-time Senior Back End Engineer role with an AI/LLM focus, responsible for building scalable backend systems and leading the integration of AI capabilities into products and engineering workflows. The position combines hands-on backend development with designing MCP servers, RAG pipelines, and AI-driven automation. It requires driving advanced adoption of LLMs and AI tooling across the development lifecycle. 🗂️ Requirements: 5+ years backend or full-stack software engineering experience, Proficiency in at least one backend language: Python, Go, Node.js, TypeScript, or Java, Experience designing and building production REST or GraphQL APIs, Experience with distributed systems, Strong knowledge of relational databases such as PostgreSQL or MySQL, Experience with caching, queues, and event-driven architectures, Experience with AWS, GCP, or Azure, Experience with CI/CD, containerization, and infrastructure as code, Hands-on experience building or integrating MCP servers, Experience implementing RAG pipelines with embeddings and retrieval logic, Experience integrating LLM APIs in production environments, Experience building AI agents or agentic workflows, Experience with prompt engineering and LLM evaluation, Experience fine-tuning or customizing models, Experience automating testing, code review, or deployment using AI 📃 Skills: Python, Go, Node.js, TypeScript, Java, REST, GraphQL, PostgreSQL, MySQL, AWS, GCP, Azure, CI/CD, Docker, Kubernetes, MCP, RAG, LLM, OpenAI, Anthropic, LangChain, LangGraph, AutoGen, Pinecone, Weaviate, pgvector, Chroma 🏢 Description: Svitla Systems Inc. is looking for a Senior Back End Engineer with AI/LLM for a full-time position (40 hours per week) in Europe. Our client generates opportunities for innovation and enhances time and cost efficiencies for MVNOs, mobile operators, and businesses providing connectivity within the telecom ecosystem. You will not only deliver production-grade backend and full-stack systems, but also help lead the organization's adoption of progressive AI tooling and engineering practices. It is a hands-on engineering role with an AI-forward mandate: we want someone who pushes the team beyond passive AI use to build, integrate, and operationalize AI capabilities across our codebase, workflows, and products. Requirements 5+ years of experience in software engineering in backend or full-stack roles. Strong knowledge of at least one modern backend language (Python, Go, Node.js/TypeScript, Java, or similar). Experience designing and building production REST/GraphQL APIs and distributed systems. Extensive knowledge of databases (PostgreSQL, MySQL, or similar) and familiarity with caching, queues, and event-driven architectures. Knowledge of cloud environment (AWS, GCP, or Azure) and modern DevOps practices (CI/CD, containerization, infrastructure as code). Have experience not just using AI (as in using Claude, Cursor, and Codex), but also building an MCP server, understanding of the RAG and LLM, and LPM that can help automate the testing, etc. Strong written and verbal communication; able to mentor and influence peers. Hands-on experience with AI/LLM engineering, including at least several of the following: Building or integrating with MCP servers; Implementing RAG pipelines (embeddings, vector databases, retrieval logic); Working with LLM APIs (OpenAI, Anthropic, Google) in production; Building AI agents or agentic workflows (LangChain, LangGraph, AutoGen, or similar); Prompt engineering and LLM evaluation; Fine-tuning or model customization; Active, sophisticated use of AI coding assistants (Claude Code, Cursor, Codex, GitHub Copilot) - able to articulate workflows, limits, and best practices; Experience automating engineering processes (testing, code review, deployment) with AI. Nice to have Open-source contributions to AI/LLM tooling or the MCP ecosystem. Familiarity with vector databases (Pinecone, Weaviate, pgvector, Chroma). Background in telecommunications, networking, or SaaS infrastructure Familiarity with model evaluation frameworks and AI observability tools. Bachelor's or Master's in Computer Science or a related field. Responsibilities Design, build, and maintain scalable backend services and APIs supporting the platform. Contribute to full-stack feature development, collaborating with frontend, infrastructure, and product teams. Write clean, well-tested, production-ready code with strong attention to performance, reliability, and maintainability. Participate in architecture decisions, code reviews, and technical planning. Lead by example in advanced AI tool adoption — go beyond using Claude, Cursor, and Codex to shape how the team uses them actively. Design and build MCP servers to expose internal data sources, APIs, and tools to LLMs and AI agents. Architect and implement RAG systems for internal and product-facing use cases. Apply working knowledge of LLMs and LPMs to evaluate, fine-tune, and integrate models into engineering workflows. Build AI-driven automation for testing, code review, documentation, and operational workflows. Mentor engineers on effective AI tool usage, prompt engineering, and AI-augmented development practices. Evaluate emerging AI tools, frameworks, and platforms; recommend adoption strategies. We offer US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!
Technology
co.brick
Senior Backend developer (Kotlin/Java)
Senior
Remote
Gliwice, Poland
130 - 160 PLN
🏢 Summary: Senior Backend Developer role focused on building secure, scalable backend systems for a battlefield management platform using Kotlin and Java. The position emphasizes security-first development, cloud deployment on GCP, and ownership of architecture, CI/CD, and dependency vulnerability management. You will ensure high reliability, performance, and compliance with strict security standards. 🗂️ Requirements: 6+ years of backend development experience, Advanced Kotlin knowledge, Advanced Java knowledge, Strong experience with Spring Framework, Expertise in Spring Boot, Expertise in Spring Security, Experience implementing authentication and authorization, Strong understanding of OWASP principles, Experience with encryption and secure coding practices, Experience with OWASP Dependency-Check Maven Plugin, Hands-on experience with Google Cloud Platform, Experience with Kubernetes on GCP, Experience with Cloud Storage and Compute Engine, Experience designing and managing CICD pipelines, Proficiency with GitHub version control 📃 Skills: Kotlin, Java, Spring, SpringBoot, SpringSecurity, OWASP, Encryption, Maven, DependencyCheck, GCP, Kubernetes, CloudStorage, ComputeEngine, GitHub, GitHubActions, CICD, Docker, Prometheus, Grafana, ELK, APIs, Git 🏢 Description: About the Role: We are seeking an experienced Senior Backend Developer with a minimum of 6+ years of expertise in developing backend systems using Kotlin and Java . This role involves working on a battlefield management system , requiring strong security-focused development, robust architecture design, and seamless integration with cloud-based infrastructure. The position demands advanced English skills and a high level of independence , enabling you to drive the development process from concept to delivery . Military experience or prior involvement in the development of military systems is a plus but not mandatory. As a critical contributor, you will ensure the reliability, security, and performance of our systems, with particular emphasis on monitoring and mitigating vulnerabilities in system dependencies. Key Responsibilities: Backend Development: Build and maintain scalable backend systems and APIs using Kotlin/Java and Spring Framework . Security Implementation: Ensure all systems meet stringent security standards, including data protection, authentication, and authorization protocols. Dependency Management: Regularly check for and scan for vulnerabilities in dependencies using tools like the OWASP Dependency-Check Maven Plugin , and mitigate identified risks promptly. Cloud Integration: Deploy and optimize backend services on Google Cloud Platform (GCP) . DevOps Practices: Design and manage CI/CD pipelines. Optimize repository workflows using Github . Collaboration: Coordinate with cross-functional teams, including frontend developers and system architects, to deliver robust solutions. System Optimization: Continuously refine and enhance system performance for battlefield-level reliability. Documentation: Produce clear and detailed documentation for architecture, code, and security processes. Required Skills & Experience: Kotlin/Java & Spring Framework: Advanced knowledge of Kotlin/Java (6+ years preferred). Expertise in Spring Boot, Spring Security , and related modules. Security Expertise: Strong understanding of OWASP , encryption, and secure coding practices. Dependency Management: Familiarity with tools like OWASP Dependency-Check Maven Plugin to scan and mitigate dependency vulnerabilities. Cloud Expertise: Hands-on experience with Google Cloud Platform services like Kubernetes, Cloud Storage, and Compute Engine. DevOps & CI/CD: Proficiency in managing pipelines with tools like GitHub Actions or similar. Experience with GitHub for version control. Independent Work: Demonstrated ability to work autonomously and deliver high-quality results. Advanced English Skills: Excellent verbal and written communication skills. Preferred Qualifications: Previous experience developing systems or products with high security requirements. Certification in Google Cloud Platform technologies. Proficiency with containerization tools like Docker and orchestration frameworks such as Kubernetes . Familiarity with monitoring and logging tools (e.g., Prometheus , Grafana , or ELK Stack ). What We Offer: Competitive salary and comprehensive benefits. Opportunities for professional development and certification. The chance to work on impactful, high-stakes systems. Flexible working hours and [remote/hybrid] options.
Technology
Svitla Systems
Senior Full Stack Software Engineer
Senior
Remote
Warsaw, Poland
🏢 Summary: Full-time Senior Full Stack Software Engineer role focused on building and scaling backend systems for a large job marketplace platform. The position centers on developing and maintaining services that ingest and process job data from external sources while supporting automation and AI-driven initiatives. The role combines backend-heavy development with light frontend maintenance in a distributed EMEA-based setup. 🗂️ Requirements: Strong experience in Java backend development, Proficiency with Spring Boot for scalable services and microservices, Experience designing and developing REST APIs, Familiarity with gRPC communication, Experience with messaging systems such as Kafka or RabbitMQ, Advanced knowledge of MySQL, Experience with MongoDB, Experience building scalable backend systems, Ability to contribute to system design, Basic knowledge of React, Basic knowledge of JavaScript or TypeScript 📃 Skills: Java, Spring, SpringBoot, REST, gRPC, Kafka, RabbitMQ, MySQL, MongoDB, React, JavaScript, TypeScript, GraphQL, AI, Automation, Caching 🏢 Description: Svitla Systems Inc. is looking for a Senior Full Stack Software Engineer for a full-time position (40 hours per week) in Europe. Our client is one of the world’s largest and fastest-growing job sites. Project Overview: Marketplace Engineering, specifically within the Employer Jobs Platform (EJYPT), leads the Aggregation Teams responsible for collecting and ingesting indexed job data from various external sources, including XML feeds, scraped job sites, and the job sync API used by third-party partners. The core mission of this group is to increase both the number and coverage of jobs available on the site by continuously improving how jobs are discovered, ingested, and maintained across these external sources. Timezone Coverage: EMEA hours, as long as you can attend meetings up to 11 am CDT. Requirements: Strong experience in Java backend development. Knowledge of Spring Boot for building scalable backend services and microservices. Understanding of REST API design and development; familiarity with gRPC communication. Understanding of messaging systems such as Apache Kafka or RabbitMQ . Advanced knowledge of databases with MySQL (primary) and MongoDB . Experience building backend systems at scale and contributing to system design. 1+ years of experience working with React and JavaScript/TypeScript for maintaining existing frontend components. Nice to have: Exposure to GraphQL (light usage). Experience with AI or automation workflows . Familiarity with caching technologies such as Valky or similar caching solutions. Responsibilities: Maintain existing backend systems. Build new features. Support automation initiatives (AI-driven extraction/config). Potentially develop tooling for AI prompts/models. We offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!