Senior Security DevOps Engineer (100% remote)

🏢 Summary: Full-time remote Senior DevOps Engineer role in a fintech company building a digital trading and investment platform. The position focuses on designing, deploying, and operating highly available cloud infrastructure on Oracle Cloud, automating infrastructure with IaC, and managing CI/CD, containers, monitoring, and security. The engineer will also support production systems, harden environments, and optimize platform reliability and performance. 🗂️ Requirements: 7+ years in DevOps or Cloud Engineering roles, Hands-on experience with Oracle Cloud Infrastructure services, Experience in high-availability production environments, Infrastructure as Code experience with Terraform, Container orchestration experience with Docker and Kubernetes, CI/CD pipeline implementation using GitHub and Jenkins, Secrets management using HashiCorp Vault, Monitoring and logging stack implementation, Experience with SQL and NoSQL databases, Experience with message brokers, Strong Linux administration skills, Networking knowledge including Nginx and WAF, Scripting in Bash and Python, OS hardening and vulnerability patching for Linux and Windows 📃 Skills: OracleCloud, Terraform, Docker, Kubernetes, Helm, GitHub, Jenkins, Vault, Prometheus, Grafana, ELK, Kibana, NewRelic, Datadog, MySQL, PostgreSQL, CockroachDB, MongoDB, Kafka, Redis, Linux, Nginx, Ansible, Git, Bash, Python, Cloudflare, WAF, ActiveDirectory 🏢 Description: 💰 Salary: 7000-8000 USD/Month 💻 100% remote 🕦 Full-time ☑️ B2B We’re looking for a Senior DevOps Engineer to join a fast-growing fintech company that builds a digital trading and investment platform. Requirements: 7+ years of experience in DevOps, Cloud Engineering, or a closely related infrastructure role. Experience working in high-availability, production-grade environments, ideally within fintech, banking, trading, or other regulated industries. Strong hands-on experience with Oracle Cloud Infrastructure, including services such as IDCS, VCN, Compute Instances, OCR, OKE, OSS, DRG, Buckets, DB system, S2S VPN, Load Balancers, Email Delivery, and vulnerability scanning. Hands-on experience with Infrastructure as Code using Terraform and container orchestration with Docker, Docker Compose, Kubernetes, Helm, and Ingress Controllers. Solid experience with CI/CD tooling, including GitHub, Jenkins, and HashiCorp Vault. Experience automating logging, alerting, and monitoring using stacks such as Alert Manager, Prometheus, Grafana, ELK, Kibana, New Relic, and Datadog. Hands-on experience with databases and message brokers, including SQL, MySQL, CockroachDB, MongoDB, Kafka, Redis, and PostgreSQL. Strong Linux and networking knowledge, including Nginx, Ansible, Git, SAML SSO implementation, Bash scripting, Python, Active Directory, WAF, patch management, and Cloudflare. Experience with OS hardening and vulnerability patching for both Linux and Windows servers. Programming and scripting skills in Bash and Python. Nice to Have: Hands-on experience with API6 API Gateway implementation and configuration. Experience with code analytics tooling such as SonarQube. Familiarity with security and vulnerability tools such as Trendmicro Deep Security and Endpoint Security. Exposure to SOC, DLP, and MDM tooling and processes. Exposure to trading system environments. Experience mentoring junior engineers and contributing to operational documentation. Key Responsibilities: Design, deploy, and operate scalable cloud infrastructure on Oracle Cloud, covering compute, networking, storage, databases, and identity services. Own and evolve Infrastructure as Code using Terraform, and manage container orchestration across Docker, Kubernetes, Helm, and Ingress Controllers. Build and maintain CI/CD pipelines across GitHub and Jenkins, and manage secrets via HashiCorp Vault. Implement and automate logging, alerting, and monitoring across Alert Manager, Prometheus, Grafana, ELK, Kibana, New Relic, and Datadog, with health checks integrated into deployments. Configure and maintain databases and message brokers, including MySQL, PostgreSQL, CockroachDB, MongoDB, Kafka, and Redis. Implement and configure the API6 API Gateway, manage WAF rules, and harden network-layer services including Nginx and Cloudflare. Perform OS hardening and vulnerability patching across Linux and Windows servers, and operate endpoint security tooling such as Trendmicro Deep Security. Lead root cause analysis and post-mortems, document operational processes, and contribute to runbooks and performance metrics tracking. Mentor junior engineers, collaborate with development teams on software requirements and test interpretation, and consult with management on operational impact and risk of platform decisions.

🏢 Summary: 6-month B2B contract for a Senior DevOps Engineer to design, automate, and maintain hybrid cloud and on-premises infrastructure, with strong focus on Azure, Kubernetes, and Infrastructure as Code. The role involves building CI/CD pipelines, managing containerized environments, and implementing GitOps and observability solutions to ensure secure, reliable, and scalable systems. Fully remote with close collaboration with engineering teams. 🗂️ Requirements: 5+ years of DevOps experience, Experience with Azure and on-premises infrastructure, Hands-on experience with Kubernetes and AKS, Strong Terraform and Infrastructure as Code experience, Experience building CI/CD pipelines with Azure DevOps YAML, Experience with Docker and container management, Experience creating and maintaining Helm charts, Experience with secrets management solutions, Experience with observability platforms, Scripting skills in Bash, Python, or PowerShell, Knowledge of Git workflows and versioning, Experience with GitOps tools such as Argo CD, Strong troubleshooting skills across infrastructure and CI/CD 📃 Skills: Azure, Kubernetes, AKS, Terraform, CI/CD, AzureDevOps, YAML, Docker, Helm, ArgoCD, GitOps, AzureKeyVault, HashiCorpVault, ELK, LGTM, Bash, Python, PowerShell, Git 🏢 Description: As a Senior DevOps Engineer , you will join our engineering team and help build and operate a cutting-edge solution for our client, a company that designs, builds, and operates advanced registry systems used by organizations worldwide. In this role, you will be responsible for designing, automating, and maintaining modern cloud and on-premises infrastructure. You will work closely with development and operations teams to ensure reliable, secure, and scalable environments while driving DevOps best practices across the organization. This is a 6-month engagement with the possibility of extension. In Short 🌎 100% REMOTELY or from one of our 2 offices 💰 160 - 180 pln/h ☑️ B2B contract Your Daily Missions Design, implement, and maintain infrastructure across Azure and on-premises environments. Build and optimize CI/CD pipelines using Azure DevOps YAML pipelines and modern automation practices. Manage and maintain Kubernetes clusters, including Azure Kubernetes Service (AKS) and on-premises Kubernetes environments. Develop and maintain Infrastructure as Code using Terraform. Create, optimize, and manage Docker containers and container images. Design, author, and maintain Helm charts for Kubernetes-based applications. Implement and manage GitOps workflows using Argo CD or similar tools. Configure and maintain secrets management solutions such as Azure Key Vault, HashiCorp Vault, or equivalent. Monitor, troubleshoot, and improve system reliability using observability platforms such as ELK Stack, LGTM Stack, or similar solutions. Collaborate with software engineers to improve deployment processes, system performance, and operational excellence. Troubleshoot complex issues across infrastructure, Kubernetes, CI/CD pipelines, and applications. The Essentials We’re Seeking 5+ years of experience in DevOps . Fluent English communication skills (minimum B2+ level). Strong experience managing hybrid infrastructure environments, including Azure and on-premises systems. Hands-on experience with Kubernetes , including AKS and on-premises clusters. Strong Terraform skills and experience with Infrastructure as Code practices. Experience building and maintaining CI/CD pipelines using Azure DevOps YAML pipelines or equivalent solutions. Experience with Docker , Dockerfile authoring, and container image management. Experience creating and maintaining Helm charts. Experience with secrets management solutions such as Azure Key Vault, HashiCorp Vault, or equivalent. Experience working with observability platforms such as ELK Stack, LGTM Stack, or equivalent. Scripting experience using Bash, Python, PowerShell, or equivalent. Good understanding of Git workflows, branching strategies, and versioning. Experience with GitOps tools such as Argo CD or equivalent solutions. Strong troubleshooting skills across infrastructure, Kubernetes, CI/CD pipelines, and applications. 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: https://www.cshark.com/projects/ . 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: Full-time, 100% remote Senior Frontend Developer role focused on building and scaling complex, responsive web applications powered by AI-driven platforms. The position involves architecting high-quality front-end solutions, integrating with back-end services, and ensuring performance, scalability, and cross-browser compatibility. The role also includes driving best practices, code quality, and modern front-end standards within the team. 🗂️ Requirements: Strong knowledge of HTML5, CSS3, JavaScript (ES6), Strong understanding of DOM, Experience with React.js, Experience with Material UI, Experience with Responsive Design and cross-browser compatibility, Familiarity with SASS or LESS, Understanding of BEM methodology, Knowledge of CSS-in-JS, Knowledge of browser storage (cookies, localStorage, sessionStorage), Proficiency with npm or yarn, Experience with Jest or equivalent testing frameworks, Understanding of SEO best practices, Familiarity with TypeScript, Knowledge of SSR and service workers, Experience with Webpack, Vite, or Rollup, Understanding of browser extensions integration 📃 Skills: HTML5, CSS3, JavaScript, ES6, DOM, React, MaterialUI, SASS, LESS, BEM, CSS-in-JS, cookies, localStorage, sessionStorage, npm, yarn, Jest, TypeScript, SSR, Webpack, Vite, Rollup, SEO, ServiceWorkers 🏢 Description: Senior Frontend Developer (100% remote) 💰 Salary: 20,000-23,000 PLN/month 🌎 100% Remote 🕦 Full-time position ☑️ B2B or Contract of Employment We are looking for a Senior Frontend Developer for a partner client that helps businesses use artificial intelligence to run more efficiently and grow faster. The company builds and provides digital platforms and consulting services that enable organizations to manage operations, analyze data, and improve performance. Their solutions combine AI, automation, and deep business expertise to help clients simplify workflows, gain insights, and deliver greater value. Requirements: HTML5 , CSS3 , JavaScript (ES6) Strong understanding of the Document Object Model (DOM) Skilled in Responsive Design and cross-browser compatibility Experience with React.js and Material UI Familiarity with CSS preprocessors such as SASS or LESS Understanding of BEM methodology and CSS-in-JS approaches Knowledge of browser storage mechanisms (cookies, localStorage, sessionStorage) Proficient in using package managers (npm/yarn) Experience in unit testing using Jest or equivalent frameworks Understanding of SEO best practices Familiarity with TypeScript for type-safe, large-scale applications Knowledge of server-side rendering (SSR) and service workers Experience with code bundling and modern module bundlers (e.g., Webpack, Vite, Rollup) Understanding of browser extensions and their integration with web applications Responsibilities: Develop and maintain  complex, responsive user interfaces for large-scale web applications. Architect and integrate front-end components with back-end APIs and services , ensuring security, scalability, and performance. Drive the implementation of pixel-perfect UI/UX designs across browsers and devices. Provide technical mentorship to junior developers and guide the team in adopting modern best practices. Conduct code reviews , enforce standards, and maintain a clean, modular codebase. Evaluate and recommend new frameworks, tools, and libraries to enhance productivity. Manage project timelines, estimate development efforts, and collaborate effectively with cross-functional teams. Maintain comprehensive front-end documentation , design patterns, and style guides. Stay updated with industry trends , emerging technologies, and front-end innovations to continuously improve team capabilities. Participate in architectural discussions , ensuring long-term scalability and maintainability of the front-end ecosystem. Get to know DevsData We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com

🏢 Summary: Senior DevOps Engineer role supporting large-scale, low-latency trading systems for a North American bank. The position involves building, automating, and maintaining infrastructure across hundreds of servers and modernizing DevOps tooling in a fully remote, long-term engagement. The engineer will work on high-performance production systems used in real-time financial markets. 🗂️ Requirements: 6+ years of DevOps experience, Experience with multiple Linux distributions, Experience with at least one cloud environment, Experience managing 400+ servers using infrastructure automation tools, Proficiency in Python, Proficiency in Bash, Experience deploying and managing AWS-based systems, Experience supporting low-latency trading or capital markets systems, Experience with bare metal container orchestration, Strong knowledge of Linux system lifecycle, Ability to build and maintain observability systems, Advanced troubleshooting in live Linux environments, Ability to work US Eastern business hours, Eligibility to work and reside in Poland 📃 Skills: Linux, AWS, Python, Bash, Puppet, Ansible, Terraform, CloudFormation, Kubernetes, Docker, Icinga, Nagios, Observability, Automation 🏢 Description: Are you an experienced DevOps engineer who enjoys building and managing infrastructure in the cloud? Do you love working with smart people in interesting and useful domains? Want to work on large systems that power real-time trading across global markets? If so, read on. The Role at a Glance Senior Cloud Infrastructure Engineer Fully remote for a top North American bank (based in Poland only) 220-250 zł/hr B2B net + VAT Partial overlap with US Eastern business hours We’re hiring experienced DevOps engineers (6+ years) to join the IT infrastructure team at a top North American bank — directly supporting the development of financial trading systems . You’ll be part of the core IT infrastructure team , building and maintaining infrastructure in AWS for trading systems used across the firm. Why Join Us? Collaborate with a world-class team of DevOps engineers and developers across North America and Europe. Enjoy a long-term, fully remote role . Competitive compensation and long term stability that only a bank can offer. A successful candidate will be a passionate DevOps engineer who prioritizes automation, can code their own tools, and understands the value of observability. They will have experience maintaining configuration at scale of over 100 servers.  They must also be curious, open-minded, and desire to learn new things. English proficiency is a must. This is a fully remote DevOps role for an engineer in Poland . You will be working exclusively and directly with the bank through a Polish company, that will provide the support and administrative assistance to make you successful in the role. We are looking for people to join the team long-term. This role requires a 6-hour overlap with US Eastern business hours during the onboarding period and a 3-4 hour flexible overlap afterwards. Only open to residents of Poland. Polish citizens, as well as legal residents with permission to work in Poland are welcome. Successful candidates will need to pass a standard background check. What we offer Work that matters in the financial domain: Work on a trading system at an established financial institution, processing millions of transactions daily. Professional growth: Collaborate with smart, highly capable developers in a supportive and challenging environment. Direct collaboration : You will work directly with the bank’s team in North America and in Poland. 1st-tier work : This is not a technical support or legacy maintenance role. The system is functional and is actively being built and you will take part in updating it. The people who built the system are still part of the team. Long-term commitment: This is not a fixed-scope or fixed-term outsourcing role; we value people who want to grow and contribute long-term. Fully remote work: Fully remote position based in Poland. Competitive Compensation: Above-average pay and ample time-off options. Responsibilities Own one or more technology domains end-to-end such as the AWS multi-account landing zone (Control Tower, SCPs, Organizations, IAM Identity Center), EKS greenfield buildout (service mesh, GitOps/ArgoCD, Karpenter), CI/CD pipeline architecture, or AI/ML infrastructure (Bedrock, GPU workloads, MLOps). Lead platform buildouts from design through production. Architect, implement, and operate the systems your domain covers, making and documenting architecture decisions within your scope. Author and enforce IaC standards. Write production-grade Terraform/Terragrunt modules and establish patterns the entire team adopts. Design and implement CI/CD pipelines for infrastructure and application workloads using Jenkins on ECS and GitOps workflows. Understand and troubleshoot hybrid connectivity across co-location facilities, AWS Transit Gateway, Direct Connect, and cross-region networking; partner with the Networks team to resolve issues and implement changes. Mentor two Mid-level Engineers (L3). Review code and designs, pair on complex problems, drive their technical growth. Collaborate with the Governance and Security SME on security posture, vulnerability remediation prioritization, and regulatory compliance. Participate in on-call as a senior escalation point for production infrastructure incidents. Leverage AI-assisted developer tooling to accelerate delivery and reduce operational toil across the team. Requirements Must have 6+ years building and operating production infrastructure on AWS. Deep expertise in at least one of: AWS multi-account architecture (Control Tower, SCPs, Organizations, TGW) or Kubernetes at scale (EKS, service mesh, GitOps/ArgoCD, Karpenter). Terraform and Terragrunt proficiency. You create the modules, not just consume them. CI/CD pipeline design and maintenance (Jenkins, GitHub Actions, or equivalent). Linux systems administration (Amazon Linux, RHEL, or equivalent). Python and Bash scripting for automation. Experience mentoring engineers through code reviews, design reviews, and pairing. Ability to take ambiguous problems, ask the right questions, and deliver without hand-holding. Ability to follow and understand technical conversations. Ability to work during US Eastern business hours: 6-hour overlap during the onboarding period and a 3-4 hour flexible overlap afterwards. Nice to have Financial services, trading technology, or regulated industry experience. Experience with Microsoft Entra ID (Azure AD) and enterprise application management, SAML/SSO configuration, and AWS IAM Identity Center integration. Hybrid cloud connectivity troubleshooting (Direct Connect, Transit Gateway, co-location to AWS). Privileged access management (CyberArk or equivalent). Cloud security tooling (Wiz, Qualys, CrowdStrike). AI/ML infrastructure such as Bedrock, SageMaker, GPU instance management, and MLOps pipelines. AWS certifications (Solutions Architect Professional, Advanced Networking, Security Specialty). Interview process Submit your CV. Answer a few written questions and a short programming exercise which you can do at your own pace. Participate in an online three-stage interview process Successful candidates will need to pass a standard background check.

🏢 Summary: Senior Backend Developer role focused on designing and delivering scalable server-side applications and APIs using Python and Django for early-stage B2B SaaS products. The position involves architectural ownership, system reliability, and performance optimization in a fully remote, full-time setup. The developer will drive backend best practices, testing, and CI/CD processes. 🗂️ Requirements: 5+ years of backend development experience, Extensive experience with Python, Extensive experience with Django, Proficiency in data modelling, Experience with relational databases, Experience with non-relational databases, Ability to write complex SQL queries, Experience with API design, Experience with system integrations, Experience with distributed systems (synchronous and asynchronous), Hands-on experience with Docker, Hands-on experience with Redis, Experience with message brokers, Experience with cron jobs, Experience writing unit tests (e.g. Pytest), Strong understanding of code quality and testing best practices, Good command of English for technical communication 📃 Skills: Python, Django, SQL, Docker, Redis, Pytest, APIs, Databases, PostgreSQL, MongoDB, CI/CD, MessageBroker, Cron, Git 🏢 Description: Senior Backend Developer (Python/Django; 100% remote) 💰 Salary: 23,400-25,500 PLN/month 🌎 100% Remote 🕦 Full-time position ☑️ B2B or Contract of Employment We are looking for a Senior Backend Developer for a partner client with a compelling mission: they act as a product and technology partner for early-stage B2B SaaS founders, helping them navigate the crucial journey from launch to their first million in revenue. They essentially become the dedicated tech backbone for these startups. Requirements: 5+ years of professional backend development experience. Extensive, proven experience with Python and the Django framework. Proficient in data modelling, relational and non-relational databases, and complex SQL queries. Strong experience with API design, integrations, and distributed systems (synchronous & asynchronous communication). Hands-on experience with Docker, Redis, message brokers, and cron jobs. Expertise in writing unit tests (e.g., Pytest) and a commitment to code quality and testing best practices. Great understanding of English with strong communication and collaboration skills. Nice to have: Previous experience in Greentech or Ecotech is a significant plus. Experience as an unofficial tech lead or mentoring junior developers. Knowledge of additional testing methodologies (integration, end-to-end). Responsibilities: Lead the design and development of complex server-side applications, APIs, and databases, taking ownership of architectural decisions. Architect, write, and deliver high-quality, scalable, and efficient code using Python and Django. Collaborate closely with cross-functional teams, including front-end developers and the tech lead, to align backend development with project goals. Architect and implement advanced user authentication, authorisation, and security mechanisms. Conduct performance analysis and optimisation, identifying bottlenecks and implementing solutions. Drive the implementation of automated testing and CI/CD processes to ensure code reliability. Establish and enforce coding standards, conduct thorough code reviews, and document backend architecture and APIs. Take responsibility for system reliability, scalability, and security, ensuring best practices. Get to know DevsData We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com

🏢 Summary: Senior Full Stack Developer role focused on designing and developing web applications in a microservices-based, cloud-native environment. The position involves building reactive front-end solutions with React and robust backend services using Java and Spring, within containerized and DevOps-driven ecosystems. Fully remote, full-time B2B contract. 🗂️ Requirements: BSc in Software Engineering or BS in Computer Science, 6+ years of experience with Java and Spring, 5+ years of experience with modern JavaScript frameworks, Practical experience with React, Experience with functional programming and Java Streams, 2+ years of experience with TDD/BDD (JUnit, Jasmine, Mockito, Protractor or Selenium), 2+ years of experience with microservices architecture and Spring Boot/Cloud, Experience with DevOps practices and Jenkins, Experience designing and deploying cloud or hybrid solutions, Experience with container-based environments, Knowledge of microservices design patterns 📃 Skills: Java, Spring, SpringBoot, SpringCloud, React, JavaScript, Kotlin, Jenkins, JUnit, Jasmine, Mockito, Protractor, Selenium, Kubernetes, CloudFoundry, Microservices, Docker, TDD, BDD 🏢 Description: 💰 8.400-9.240 USD/Month 🌎 Fully Remote, Full-Time ☑️ B2B Contract We’re looking for a Senior Full Stack Developer ! Our client is an international company – a pioneer in container shipping. They are distinguished by their unique strategy as a digital-oriented, asset-light, global niche carrier that offers distinctive advantages, allowing the company to provide innovative and premium customer-centric services while maximizing profitability. In a dynamic shipping and logistics environment, the company has set itself apart as a carrier with a fresh, unique approach. Requirements: BSc in Software Engineering or a BS degree in Computer Science. 6+ years of experience in the following technologies: Java, Spring Experience with Functional Programming and Java Streams. 5+ years of experience in FE development with modern JavaScript Framework/libraries (practical experience with React is a must). Experience with developing a reactive UI (ReactJS). 2+ years of experience in TDD/BDD development in the following frameworks: Junit, Jasmin, Mockito, Protractor/Selenium 2+ years of experience in microservices-based architecture and tools (Spring Boot/Cloud) Experience in DevOps development and Jenkins. Experience in development in Kotlin is a big advantage. Experience in designing, developing, and deploying cloud/hybrid-based solutions. Experience in developing and deploying in container-based environments (Kubernetes, Cloud Foundry). Familiarity with the following design concepts: micro-services, service discovery, circuit breaker. Self-starter with the ability to appropriately prioritize and plan complex work in a rapidly changing environment. Versatility and the capability to switch easily between different tasks and technologies. Experience in assessing a broad range of information solutions and products. Strong critical thinker with problem-solving aptitude. Excellent English - verbal and written. Responsibilities: Design and develop Web applications. Develop from specifications supplied or create your own specification based on requirements. Reports progress on a regular basis to the Team Leader. Responsible for planning daily schedules and efficient use of time to ensure deliverables are met. Responsible for unit testing of own code to a level acceptable for Quality Assurance testing, where basic functions work per the requirements.

🏢 Summary: Senior AWS DevOps / Platform Engineer role in a scalable fintech environment focused on AWS cloud infrastructure, CI/CD modernization, and production reliability. The position involves building and maintaining cloud-native platforms, automating infrastructure, and ensuring high availability and security of mission-critical systems. The engineer will work with global teams to drive SRE practices and continuous delivery excellence. 🗂️ Requirements: 7+ years of DevOps / Platform Engineering / SRE experience, Strong hands-on experience with AWS and networking, Strong experience with Kubernetes (EKS preferred), Strong experience with Docker, Experience building and maintaining CI/CD pipelines, Strong experience with Terraform, Experience with monitoring and observability tools, Experience supporting production environments, Experience with incident response and troubleshooting, Proficiency in Python and/or Bash, Understanding of distributed systems and microservices architectures, Knowledge of high availability systems 📃 Skills: AWS, Kubernetes, EKS, Docker, Terraform, CloudFormation, ARM, Jenkins, GitLab, Azure, GitHub, Python, Bash, Prometheus, Grafana, ELK, OpenSearch, Datadog, CloudWatch, ArgoCD, Linux 🏢 Description: 🚀 Senior AWS DevOps / Platform Engineer 📍 Remote (Poland) | Occasional visits to Warsaw 💰 Rate: up to 1,500 PLN/day We are looking for an experienced Senior AWS DevOps Engineer to join a highly scalable fintech environment. The role combines platform engineering, CI/CD modernization, cloud infrastructure, and production reliability , working closely with global engineering teams. You will support and evolve mission-critical systems used across international business units, ensuring high availability, security, and continuous delivery excellence. 💡 Your Mission ☁️ Cloud & Platform Engineering Design, build, and maintain scalable AWS-based infrastructure. Ensure high availability, resilience, and performance of distributed systems. Work with modern cloud-native architectures and microservices platforms. ⚙️ CI/CD & Automation Build and maintain CI/CD pipelines using: Jenkins GitLab CI Azure DevOps GitHub Actions Migrate and improve legacy deployment pipelines. Implement GitOps and automation best practices. 🧱 Infrastructure as Code Provision and manage infrastructure using: Terraform CloudFormation ARM templates (where applicable) Standardize infrastructure provisioning across environments. 📦 Containers & Orchestration Deploy and manage containerized workloads using Docker. Work with Kubernetes (EKS preferred). Support scaling, rollout strategies, and cluster optimization. 📊 Monitoring & Observability Implement monitoring and alerting solutions using: Prometheus Grafana ELK / OpenSearch Datadog CloudWatch Improve system visibility and proactive incident detection. 🚨 Production Support (SRE mindset) Support production environments and ensure system stability. Participate in incident management and root cause analysis. Improve MTTR and system reliability through automation. Drive SRE practices (SLI / SLO / SLA). 🔐 Security & Compliance Apply security best practices in cloud environments. Support secrets management, encryption, and access control. Work in a regulated fintech environment (compliance-aware engineering). 🎯 Must-Have Skills ✔️ 7+ years of experience in DevOps / Platform Engineering / SRE ✔️ Strong hands-on experience with: AWS (core services + networking) Kubernetes (preferably EKS) Docker ✔️ CI/CD tooling: Jenkins / GitLab CI / Azure DevOps / GitHub Actions ✔️ Infrastructure as Code: Terraform (must-have) CloudFormation or ARM templates (nice to have) ✔️ Scripting: Python and/or Bash ✔️ Strong experience with: Monitoring & observability tools Production support environments Incident response & troubleshooting ✔️ Understanding of: Distributed systems Microservices architectures High availability systems ⭐ Nice to Have Experience in fintech, banking or payment systems GitOps (ArgoCD or similar) Linux administration Security tooling (OWASP, scanning, secrets management) Experience with Java-based systems Cloud certifications (AWS / Azure) 🎁 What You’ll Get ✨ Work on large-scale fintech platforms with global reach ✨ Strong engineering culture focused on automation & reliability ✨ Exposure to modern AWS + Kubernetes ecosystems ✨ Real impact on CI/CD and platform architecture ✨ Hybrid/remote flexibility (Poland-based) ✨ Long-term stable project environment ✨ Opportunity to work with experienced DevOps & SRE teams 🚀 Ready to build and scale cloud platforms that power global fintech systems? Join us and help shape a modern AWS-driven DevOps & platform engineering environment focused on automation, reliability, and continuous delivery.

🏢 Summary: Full-time Senior Full Stack Developer role focused on building scalable, data-driven platforms for financial and enterprise sectors using Node.js and React. The position involves designing microservices, developing RESTful APIs, and creating responsive front-end applications in a hybrid work model (Warsaw). 🗂️ Requirements: 5+ years experience as Senior Full Stack Developer, Strong expertise in Node.js, Strong expertise in React, Experience with Express.js, Experience building RESTful or GraphQL APIs, Knowledge of OAuth and JWT authentication, Proficiency in Redux, HTML5, CSS3, ES6+, Experience with Vite, Webpack or Babel, Experience with MySQL or PostgreSQL, Experience with AWS, Azure or GCP, Experience with Docker and Kubernetes, Proficiency with Git 📃 Skills: Node.js, React, Express.js, GraphQL, REST, OAuth, JWT, Redux, HTML5, CSS3, JavaScript, ES6, Vite, Webpack, Babel, MySQL, PostgreSQL, AWS, Azure, GCP, Docker, Kubernetes, Git, SQL, MongoDB, CI/CD 🏢 Description: Senior Full Stack Developer (Node.js + React) 💰 Salary: 23,000-24,800 PLN/Month 💻 Warsaw, Poland (Hybrid - 3 days in office, 2 days remote) 🕦 Full-time ☑️ B2B or CoE We’re looking for a Senior Full-Stack Developer to join a fast-growing international tech company focused on building modern, data-driven platforms that power digital transformation in the financial and enterprise sectors. Requirements: 5+ years of experience as a Senior Full Stack Developer with significant expertise in Node.js and React. Strong experience in building server-side applications using Node.js and Express.js. Hands-on experience with API development and integration, particularly with GraphQL or RESTful services. Strong knowledge of authentication and authorization mechanisms (OAuth, JWT, session-based). Front-end proficiency in React.js, Redux, HTML5, CSS3, and modern JavaScript (ES6+). Familiarity with front-end build tools such as Vite, Webpack, and Babel. Strong experience with databases such as MySQL and  PostgreSQL. Experience with cloud platforms (AWS, Azure, or GCP), as well as containerization and orchestration tools such as Docker and Kubernetes. Strong experience using Git and version control systems. Proficiency in English (both written and spoken). Key Responsibilities: Design, build, and maintain scalable, high-performance server-side applications and RESTful APIs using Node.js and Express.js. Develop and maintain interactive, responsive user interfaces using React.js, Redux, and modern JavaScript (ES6+). Lead the design and implementation of scalable architectures and microservices. Work closely with database engineers to design efficient schemas and manage data interactions using SQL databases or MongoDB. Ensure reliable deployments and smooth release of updates using CI/CD pipelines and Docker. Write unit and integration tests and optimize performance to ensure high-quality code. Collaborate closely with cross-functional teams to define and implement technical solutions. Improve system performance, reliability, and long-term maintainability through optimization and best practices. Get to know DevsData: We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com/

🏢 Summary: Full-time Senior Back-End Engineer (Node.js) role focused on designing and maintaining scalable, high-performance server-side applications and APIs for modern, data-driven platforms. The position involves building RESTful services, integrating with third-party systems, ensuring code quality through testing, and optimizing system reliability and performance. Hybrid work model in Warsaw with B2B or CoE contract options. 🗂️ Requirements: Strong experience with Node.js, Strong experience with Express.js, Experience building and integrating APIs (GraphQL or REST), Knowledge of OAuth, JWT, and session-based authentication, Experience with MySQL, Experience with PostgreSQL, Experience writing unit tests with Chai and Mocha, Experience using Git and version control systems 📃 Skills: Node.js, Express.js, GraphQL, REST, OAuth, JWT, MySQL, PostgreSQL, Chai, Mocha, Git 🏢 Description: Senior Back-End Engineer (Node.js) 💰 Salary: 18,700-20,900 PLN/Month 💻 Warsaw, Poland (Hybrid - 3 days in office, 2 days remote) 🕦 Full-time ☑️ B2B or CoE We’re looking for a Senior Back-End Engineer to join a fast-growing international tech company focused on building modern, data-driven platforms that power digital transformation in the financial and enterprise sectors. Requirements: Strong experience in building server-side applications using Node.js and Express.js. Hands-on experience with API development and integration, particularly with GraphQL or RESTful services. Strong knowledge of authentication and authorization mechanisms (OAuth, JWT, session-based). Strong experience with databases such as MySQL and  PostgreSQL. Experience writing unit tests with tools such as Chai and Mocha. Strong experience using Git and version control systems. Proficiency in English (both written and spoken). Nice To have: Bachelor’s degree in Computer Science or a related field. Experience with cloud platforms (AWS, Azure, or GCP), as well as containerization and orchestration tools such as Docker and Kubernetes. Experience with microservices architecture. Experience setting up CI for static analysis and test execution. Experience developing RAG applications and storing data in vector embeddings. Key Responsibilities: Design, build, and maintain scalable, high-performance server-side applications and RESTful APIs using Node.js and Express.js. Guide and supervise the development of key code components to ensure long-term reliability and scalability. Integrate with front-end components and third-party services. Actively review the codebase, recommending and implementing refinements where needed. Write unit and integration tests and optimize performance to ensure high-quality code. Collaborate closely with cross-functional teams to define and implement technical solutions. Improve system performance, reliability, and long-term maintainability through optimization and best practices. Get to know DevsData: We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com/

🏢 Summary: Part-time, fully remote Senior Frontend Developer role focused on maintaining, optimizing, and incrementally improving a large, production-grade public website. The position centers on performance optimization, legacy code maintenance, and enhancing user-facing features within an existing WordPress-based system. The work emphasizes stability, speed, SEO best practices, and cross-browser compatibility rather than full rewrites. 🗂️ Requirements: Expert-level front-end development experience, Proven experience with long-lived or legacy codebases, Strong website performance optimization experience, Experience with web performance audits and tooling, Excellent knowledge of JavaScript, Excellent knowledge of HTML, Excellent knowledge of CSS, Understanding of responsive design principles, Basic understanding of SEO fundamentals and performance factors, Experience working with large frontend systems, Ability to work independently 📃 Skills: JavaScript, HTML, CSS, PHP, WordPress, CloudFlare, Lighthouse, GooglePageSpeed, SEO 🏢 Description: Senior Frontend Developer (Part-time; 100% remote) 💰Salary: up to around $40 per hour 💻 100% Remote 🕦 Part-time: Around 10h per week, up to 10-15h/week, as needed ☑️ B2B contract/freelance We are seeking a Senior Front-End Developer to work on the ongoing improvement, maintenance, and optimization of our extensive public-facing website. The role is focused on working with an existing, production-grade codebase built primarily with HTML, CSS, JavaScript, PHP and WordPress, under CloudFlare. Requirements Expert-level experience in front-end development, with a strong track record of working on long-lived or legacy codebases Website performance optimization experience, web performance tooling and audits (e.g., Lighthouse, Google PageSpeed insights) experience. Ability to work independently (along with a work history of independent work) Excellent knowledge of JavaScript, HTML and CSS, with a clear understanding of responsive design principles Basic understanding of SEO fundamentals, including performance factors, and search-engine-friendly markup Experience working with extensive and legacy frontend systems Strong attention to detail and a quality-focused mindset Main Responsibilities Optimize page load times and overall website performance using front-end techniques. Working on bugfixes and optimization of a legacy front-end website built with JavaScript, HTML, CSS, and WordPress, ensuring performance, and stability. Improve existing features and user-facing functionality through thoughtful, incremental enhancements rather than full rewrites. Collaborate with internal developers, designers, management, and content teams to implement updates and refinements to existing pages and components. Ensure cross-browser compatibility across the website. Apply front-end SEO best practices, including performance optimization (most importantly), accessibility improvements, page structure, and Core Web Vitals. Get to know DevsData: We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com/