Senior React Engineer + Python

🏢 Summary: Senior Software Engineer role on a global product team building enterprise platforms for research, clinical development, and scientific decision-making. The position focuses on scalable backend services, modern web applications, cloud-native architecture, CI/CD, testing, reliability, and collaboration in an agile environment. 🗂️ Requirements: 5+ years of software development experience, ASP.NET Core and Vue 3 with TypeScript, Python or .NET backend experience, REST API development, Azure or AWS cloud experience, GitHub Actions CI/CD experience, Automated testing and DevOps practices, English fluency 📃 Skills: ASP.NET, Core, .NET, Vue, TypeScript, Python, REST, Azure, AWS, GitHub, Actions, Vitest, Allure, MSAL 🏢 Description: Job Title: Senior Software Engineer Position can be worked Remote About the role Are you an experienced Software Developer looking to build digital products that deliver real business value? Join a global product team developing enterprise-grade platforms that support research, clinical development, and scientific decision-making. You will work closely with Product Owners, architects, business stakeholders, and fellow engineers to design, build, and evolve modern software solutions used by thousands of users worldwide. What you will be doing Design and implement scalable solutions with backend services and APIs Develop modern web applications and user-facing functionality Contribute to system architecture and technical decision-making Participate in cloud-native solution design and implementation Build and improve CI/CD pipelines and automated deployment processes Ensure high quality through automated testing and code reviews Collaborate with cross-functional teams in an agile setup Support platform reliability, observability, and operational excellence What we are looking for 5+ years of software development experience: Frameworks: ASP.NET Core (.NET 10), Vue 3 (Composition API) + TypeScript UI library: internal design system Auth: Azure MSAL Browser (Microsoft identity) Testing: Vitest + Vue Test Utils, Allure reporting Hands-on experience with at least one backend technology stack such as: Python, .NET Experience developing REST APIs Experience with cloud platforms such as Azure or AWS Experience with CI/CD (GitHub Actions), automated testing, and DevOps practices Strong communication and stakeholder management skills Experience from regulated environments is considered an advantage Fluency in English, both written and spoken, is expected.

🏢 Summary: Senior Software Engineer role focused on designing, building, and scaling secure enterprise web applications and high-performance SaaS platforms. The position covers backend APIs, microservices, testing, technical leadership, and Azure-based CI/CD delivery within Agile teams. 🗂️ Requirements: 6+ years of full-lifecycle software development experience, Experience developing and maintaining large-scale web applications and SaaS solutions, Strong proficiency in C#, .NET Core, and .NET Framework, Hands-on experience with Azure Cloud services, RESTful architectures, and CI/CD pipelines, Experience with NUnit, Moq, Jest, and Git, Strong problem-solving and technical communication skills 📃 Skills: C#, .NET, Azure, REST, Microservices, NUnit, Moq, Jest, Git, CI/CD, SaaS 🏢 Description: We are looking for a skilled and passionate Senior Software Engineer to join our core engineering team. In this role, you will play a key part in designing, building, and scaling enterprise-grade web applications and high-performance SaaS solutions. If you have a strong foundation in Microsoft technologies, cloud architecture, and modern engineering practices—and love solving complex technical challenges—we would love to hear from you! Key Responsibilities Architecture & Development: Design, build, and maintain scalable, secure, and resilient web applications and SaaS platforms. API & Backend Systems: Implement and optimize RESTful APIs, microservices, and Web API integrations. Quality & Testing: Drive software quality by writing comprehensive unit tests (NUnit, Moq, Jest) and advocating for test-driven practices. Technical Leadership: Participate in code reviews, architectural discussions, and technical planning to ensure clean, maintainable code. Agile Collaboration: Work closely with cross-functional teams using Agile methodologies to deliver features iteratively and efficiently. DevOps & Version Control: Utilize Git and Azure DevOps for continuous integration, project tracking, and modern deployment pipelines. Key Requirements Experience: 6+ years of hands-on experience in full-lifecycle software development. SaaS & Web Architecture: Proven track record of developing and maintaining large-scale web applications and SaaS solutions. Core Tech Stack: Strong proficiency in C# , .NET Core , and .NET Framework . Cloud & DevOps: Hands-on experience with Azure Cloud services, RESTful architectures, and CI/CD pipeline concepts. Testing & Tools: Solid experience with unit testing frameworks ( NUnit, Moq, Jest ) and version control ( Git ). Communication: Excellent problem-solving skills and the ability to articulate technical concepts clearly to team members. Nice to Have Agile Frameworks: Experience working within a SAFe (Scaled Agile Framework) environment. Mentorship: Passion for coaching junior developers and fostering team growth.

🏢 Summary: Opportunity to build and maintain scalable backend applications and enterprise data platforms for research, operations, and risk teams in a global financial organization. The role covers the full software development lifecycle, from system design and testing through deployment, production support, and continuous improvement. 🗂️ Requirements: 4+ years of software engineering experience, Strong Python proficiency, Experience with C#/.NET or Rust, Backend development and REST API knowledge, Distributed systems knowledge, SQL, relational database, and data modelling experience, Cloud platform, Git, CI/CD, and automated testing familiarity, Agile teamwork and strong communication skills 📃 Skills: Python, C#, .NET, Rust, REST, SQL, Git, CI/CD, Testing, Cloud 🏢 Description: Software Engineer with Python About the Role Join a team developing enterprise data platforms and backend services used across a global financial organization. You will build scalable applications that support research, operations, and risk teams while collaborating with engineers and business stakeholders throughout the software development lifecycle. Responsibilities Design, develop, and maintain backend applications and services. Deliver production-ready software, including testing, deployment, and support. Collaborate with technical and business stakeholders to deliver reliable solutions. Contribute to system design, code reviews, and continuous improvements. Troubleshoot production issues and implement long-term fixes. Requirements 4+ years of software engineering experience. Strong Python skills. Experience with C#/.NET or Rust. Knowledge of backend development, REST APIs, and distributed systems. Experience with SQL, relational databases, and data modelling. Familiarity with cloud platforms, Git, CI/CD, and automated testing. Strong communication skills and ability to work in an Agile environment. Nice to Have React or Angular experience. AI/ML integration experience. Financial services or market data knowledge. Experience with Kafka, Solace, or IBM MQ.

🏢 Summary: Senior Software Engineer role building enterprise digital platforms for the pharmaceutical and life sciences sector. The position covers full-stack, cloud-native development, architecture influence, API design, CI/CD, quality automation, and platform reliability in an international agile team. 🗂️ Requirements: 5+ years of professional software development experience, Strong .NET/ASP.NET Core and/or Python experience, REST API development experience, Vue 3 and TypeScript experience, Azure or AWS cloud platform experience, CI/CD, automated testing, and DevOps knowledge, Software architecture and scalable solution design knowledge, Fluent written and spoken English 📃 Skills: .NET, ASP.NET, Python, Vue, TypeScript, REST, Azure, AWS, GitHub, Vitest, Allure, MSAL, CI/CD, DevOps 🏢 Description: We’re looking for an experienced Senior Software Engineer to join a global product team within the pharmaceutical and life sciences industry . This is a chance to work on modern, enterprise-grade digital platforms where software engineering meets science and real-world business impact . You’ll have the opportunity to influence architecture, contribute to technical decisions, and build solutions that matter — all while working in a truly international, agile environment. What you’ll work on As a Senior Software Engineer, you’ll be involved across the full software development lifecycle — from designing scalable solutions and APIs to delivering modern user-facing functionality. Your responsibilities will include: Designing and implementing scalable backend services and REST APIs Developing modern web applications and intuitive user-facing functionality Contributing to system architecture and technical decision-making Designing and implementing cloud-native solutions Building and improving CI/CD pipelines and automated deployments Ensuring software quality through automated testing and code reviews Working closely with Product Owners, architects, engineers and business stakeholders Supporting platform reliability, observability and operational excellence Contributing to an agile, collaborative engineering culture Your technology playground You’ll work with a modern technology stack including: ASP.NET Core / .NET 10 Vue 3 – Composition API TypeScript REST APIs Python and/or .NET Azure / AWS GitHub Actions & CI/CD Vitest & Vue Test Utils Allure reporting Microsoft Identity / Azure MSAL Browser What we’re looking for We’re looking for someone who brings 5+ years of professional software development experience and is comfortable taking ownership of technical solutions. You’ll ideally have: Strong experience with .NET / ASP.NET Core and/or Python Hands-on experience building REST APIs Solid frontend experience with Vue 3 and TypeScript Experience with cloud platforms , preferably Azure or AWS Practical knowledge of CI/CD, automated testing and DevOps practices A strong understanding of software architecture and scalable solution design Excellent communication and stakeholder management skills Experience working in regulated environments is a strong advantage Fluent English , both written and spoken Why this opportunity? Work globally, remotely – collaborate with colleagues and stakeholders across an international product organisation. Build technology with purpose – your work will contribute to digital platforms supporting research, clinical development and scientific decision-making. Have a technical voice – this isn’t just about writing code. You’ll influence architecture, engineering practices and technical direction. Modern engineering environment – cloud-native development, modern frontend technologies, automation, CI/CD and a strong focus on quality. Cross-functional collaboration – work alongside experienced engineers, architects, Product Owners and business experts in an agile setup. Ready to build software where technology meets science? Apply now and let’s talk.

🏢 Summary: Remote Staff Software Engineer role building high-scale cybersecurity platform features and public APIs using Ruby on Rails, Angular, and AWS. The offer emphasizes end-to-end ownership, low-latency API performance, engineering quality, and direct product impact, with compensation of approximately $150,000–$205,000 annually on a B2B contract. 🗂️ Requirements: 6+ years of commercial software development experience, Strong Ruby on Rails experience or deep Node.js expertise with ability to transition to Ruby, Experience delivering scalable, public-facing APIs, C1+ written and spoken English, Working-time overlap between UTC-5 and UTC+1, Experience in SaaS, fintech, or high-growth product environments 📃 Skills: Ruby, Rails, Node.js, Angular, AWS, APIs 🏢 Description: About Our Client On behalf of our Client - a highly profitable, US-headquartered scale-up in the Cybersecurity and Threat Prevention space—we are seeking an experienced Staff Software Engineer . Our Client builds real-time platform security solutions that protect global digital platforms from fraud, account abuse, and automated attacks. Operating at massive scale, their architecture processes high-throughput API traffic under stringent low-latency requirements. They combine deep backend scalability engineering with a heavy emphasis on intuitive product UI/UX and developer-first design. Location & Work Setup 100% Remote (requiring working overlap between UTC-5 and UTC+1 time zones). Hybrid Option: Access to a modern tech hub in Krakow, Poland if you prefer working from an office. Key Responsibilities Product Development: Architect and deliver end-to-end features using a tech stack centered on Ruby on Rails, Angular, and AWS . High-Throughput APIs: Design and optimize public-facing APIs with a focus on developer ergonomics, efficiency, and reliability. Engineering Standards: Drive continuous quality through thorough code reviews, architectural discussions, and technical mentoring. Product Impact: Work in an autonomous, streamlined engineering team where your technical decisions directly shape the platform's trajectory. Candidate Profile 6+ years of commercial software development experience, ideally within SaaS, fintech, or high-growth product companies. Backend Proficiency: Strong experience with Ruby on Rails (or deep expertise in Node.js with a fast learning agility to transition into a Ruby environment). API Ecosystems: Proven track record of shipping scale-ready, public-facing APIs optimized for developer consumption. Communication: C1+ fluent written and spoken English for daily collaboration in a distributed team. Work Culture High Autonomy: Strong emphasis on complete project ownership from concept to production release. Pragmatic & Modern: Openness to experiment, iterate, and leverage automation and modern AI tools to eliminate toil. What Is Offered Compensation: ~$150,000 – $205,000 USD / year (B2B Contract). Time Off: Unlimited PTO policy + flexible working hours focused on delivered outcomes. Benefits: Paid parental leave policy. Equipment: Full high-spec hardware setup (laptop + workstation gear).