Senior Frontend Engineer, Portfolio
// opis stanowiska
Ready to do the most impactful work of your career? At Coinbase, we are uncompromising on our mission to increase economic freedom. The bar is high, the environment is intense, and we like it that way. This isn't a place for complacency, it’s a place to be pushed past your perceived limits. If you're ready to build the future of finance alongside people who refuse to settle for "good enough," you belong here. Coinbase is a remote-first, but not remote-only company. Expect to get together quarterly for intense in-person working sessions called “surges.” learn more about working at Coinbase.
Senior Frontend Engineer, Portfolio
The Portfolio team within the Consumer & Business group owns how millions of Coinbase users understand what they hold and how it's performing. We build the balances, holdings, and profit-and-loss experiences at the core of the Coinbase app and website, the surfaces users open first, check most often, and trust most. As a Senior Frontend Engineer on Portfolio, you'll turn complex, real-time financial data into clarity for every kind of Coinbase user, from first-time buyers to sophisticated traders.
What you'll do:
- Own the design and delivery of core Portfolio experiences including balances, holdings, and PnL across web (React/TypeScript) and native mobile (iOS and Android)
- Build performant, accessible, pixel-accurate UI that renders real-time financial data at Coinbase scale
- Partner with backend, design, and product to take ambiguous problems from scoping through production rollout
- Drive frontend architecture and quality including component reuse, state management, testing, and performance instrumentation
- Strengthen the team's engineering bar through rigorous code reviews, technical mentorship, and well-documented architecture decisions
Required Skills and Experience:
- 5+ years of frontend engineering experience building consumer-facing web applications with high-quality, well-tested production code
- Deep expertise in React and TypeScript, with strong command of modern frontend fundamentals (state management, rendering performance, accessibility)
- Track record shipping and owning complex features end-to-end in production, ideally in financial, trading, or other data-intensive applications where accuracy and latency matter
- Demonstrated experience building real-time or high-throughput UIs and integrating with backend APIs (REST/GraphQL), with consistent collaboration alongside design and product partners to shape product outcomes
- Utilizes generative AI responsibly, maintaining human oversight to deliver business-ready outputs and drive measurable improvements in workflow efficiency, cost, and quality.
Pay Transparency Notice: Base salary varies by location (see range below). Total compensation may also include equity and bonus eligibility, and benefits (medical, dental, vision, 401(k)).
- Application Limit: Candidates may submit a maximum of 3 applications within a 6-month period.
- Equal Opportunity Employer: Coinbase is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or genetic information. Applicants with criminal histories will be considered consistent with applicable federal, state, and local laws.
- US Applicants: View Employee Rights, Know Your Rights, and E-Verify Notice of Participation.
- Accommodations: If you are an individual with a disability who needs a reasonable accommodation, email us your request and contact info at accommodations[at]coinbase.com. Need screen reading technology? Click here to download a free compatible screen reader and view the tutorial.
- Data Privacy & Arbitration: By submitting your application, you agree to our Candidate Privacy Notice. US applicants: By submitting your application, you agree to Arbitration of Disputes.
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// zostaniesz przekierowany do: Greenhouse
Wysyłając aplikację dołącz klauzulę: „Wyrażam zgodę na przetwarzanie moich danych osobowych dla potrzeb niezbędnych do realizacji procesu rekrutacji zgodnie z art. 6 ust. 1 lit. a RODO."
Für unseren Kunden aus der Versicherungsbranche in Luzern, suchen wir zwei motivierte:n und aufgeschlossene:n Senior Frontend Engineer.
Deine Aufgaben:
Konzeption, Entwicklung und Weiterentwicklung moderner Frontend-Lösungen in einem agilen Umfeld
Eigenständige Analyse und Umsetzung komplexer fachlicher und technischer Anforderungen
Sicherstellung von Codequalität, Performance, Wartbarkeit und Skalierbarkeit der Anwendungen
Aktive Mitarbeit bei Architektur- und Technologieentscheidungen
Enge Zusammenarbeit mit Product Ownern, UX/UI Designern und Backend-Entwicklern
Förderung von Best Practices in Software Engineering, Testing und Code Reviews
Verantwortung für eine zuverlässige und termingerechte Delivery innerhalb des Produktteams
Identifikation und Umsetzung von Optimierungspotenzialen in Entwicklungsprozessen und Anwendungen
Konstruktive Mitgestaltung technischer Diskussionen und kontinuierliche Weiterentwicklung der Frontend-Landschaft
Professioneller Einsatz moderner AI-basierter Coding-Assistants (z. B. GitHub Copilot) zur Steigerung von Entwicklungsqualität und EffizienzDein Profil:
Fundierte praktische Erfahrung als Frontend-Entwickler:in (Angular, HTML, TypeScript, SCSS)
Begeisterung für gute User Experience und grosses Know-How mit Web Components, Accessibility und Usability
Erfahrung im DevOps Cloud Umfeld
Entwicklung mit E2E-Tests und UI Testing (Storybook und Chromatic)
Erarbeitung und Umsetzung architekturkonformer Lösungen sowie Dokumentation
Sicherer Umgang mit modernen AI-basierten Coding-Assistants (z.B. GitHub Copilot) zur Steigerung von Qualität und Entwicklungsgeschwindigkeit
Ein Plus sind Bereitschaft und Erfahrungen in der Backend-Entwicklung (Java)
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Location: EU/UK
(Remote)
Who You’ll Work For:
At Makersite, we're pioneering the future of sustainable product development and digital collaboration. As a leading platform for product lifecycle management (PLM), we empower companies to make smarter, more sustainable decisions across their entire supply chain. Our cutting-edge software enables teams to design, prototype, and manufacture with transparency, efficiency, and responsibility—reducing environmental impact while optimizing performance.
We're a fast-growing, innovative company that thrives on creativity, collaboration, and continuous learning. If you're passionate about technology, sustainability, and creating meaningful impact, we’d love to hear from you. Join us and be a part of shaping the future of manufacturing and product innovation.
Who we're looking for:
As part of our growing team, you will play a key role in shaping the future of sustainable product development. We’re looking for innovative, driven Frontend Engineers who are passionate about technology and sustainability to join us in building tools that enable companies to make smarter, more responsible decisions. In this role, you’ll have the opportunity to collaborate with talented professionals, contribute to cutting-edge projects, and help drive the digital transformation of industries worldwide. If you're ready to make an impact and contribute to meaningful change, we want to hear from you!
This role is a fixed, permanent position. All successful applicants will receive a permanent employment contract regardless of location.
The role:
Frontend Feature Development: Design, develop and maintain frontend features and functionalities across the company's platform, delivering intuitive and reliable user experiences.
Angular Ownership: Take ownership of the Angular codebase, driving its ongoing development, maintenance and technical direction.
Frontend Architecture & Standards: Lead…
Headquarters: Remote
Lithic is the modern card issuing and processing platform empowering ambitious financial companies to build the future of payments.
Our infrastructure powers card programs for 100+ innovative clients, from fintechs reimagining credit and digital banking to platforms transforming disbursements and spend management. Companies like Mercury, Flex, and Novo rely on Lithic's developer-friendly APIs, direct network connections, and flawless reconciliation to launch and scale card programs in weeks, not years.
We're building a future where access to better financial products materially improves people's lives, free from the constraints of 30-year-old mainframes and legacy processors. We're proud to be backed by world-class investors who share that vision, including Bessemer Venture Partners, Index Ventures, Spark Capital, Stripes, and Mastercard, along with many others.
We're a team of 170+ across 26 states and 7 countries, headquartered in New York City.
We are hiring a Senior Software Engineer for the Product Platform team, which owns the foundational layer of our API that all other Lithic products build on top. The team’s mission is to make Lithic's API the best in fintech — reliable, consistent, and a joy to integrate with. This includes API Gateway, Events Platform, API key management and authorization, audit logging, or API norms and versioning strategy.
What you'll do:
Write reliable, secure, and scalable code for Lithic's product platform with minimal tech debt
Improve the reliability of systems in team’s scope and participate in the team on-call rotation
Own projects from planning to launch, spanning areas like API key management, reliability, audit logging, or search, keeping stakeholders informed and aligned along the way
Lead efforts to improve systems and processes within the team
What you'll bring:
4+ years building production backend systems, ideally including public-facing APIs at scale
Experience in or desire to lea…
Headquarters: Remote
Lithic is the modern card issuing and processing platform empowering ambitious financial companies to build the future of payments.
Our infrastructure powers card programs for 100+ innovative clients, from fintechs reimagining credit and digital banking to platforms transforming disbursements and spend management. Companies like Mercury, Flex, and Novo rely on Lithic's developer-friendly APIs, direct network connections, and flawless reconciliation to launch and scale card programs in weeks, not years.
We're building a future where access to better financial products materially improves people's lives, free from the constraints of 30-year-old mainframes and legacy processors. We're proud to be backed by world-class investors who share that vision, including Bessemer Venture Partners, Index Ventures, Spark Capital, Stripes, and Mastercard, along with many others.
We're a team of 170+ across 26 states and 7 countries, headquartered in New York City.
Position: Senior Software Engineer, Processing
Location: Remote
We are hiring a Senior Software Engineer for our Processing team to lead Lithic’s next phase of growth.
The Processing team builds and maintains the real-time interfaces between Lithic and external payment networks. Every card authorization, clearing message, and settlement file flows through systems this team owns. The team manages both online and batch transaction flows across Mastercard, Visa, and Amex, along with transaction enrichment, disputes processing, and network compliance. The systems we maintain have strict latency and uptime requirements, because they sit on the critical path for every card transaction. The team also manages the physical network peering with card network partners, so infrastructure and networking expertise are important. The team primarily uses Java, Python, and Kotlin on AWS.
What you'll do:
Ensure high reliability, low latency, and correctness for Lithic's transaction processing interfaces…
Design and develop modern, high-performance and user-friendly user interfaces for our Europe-wide online shops
Continuously improve and optimize our frontend architecture, especially using Vue.js and Nuxt
Collaborate closely with UX/UI designers, backend developers, product owners and stakeholders
Analyze user requirements and translate them into technical concepts, implementation plans and effort estimates
Optimize performance of existing systems with a focus on loading times, Core Web Vitals and conversion rates
Ensure high code quality through code reviews, testing and clean architecture
Strong experience with JavaScript, TypeScript, HTML and CSS
Very good knowledge of modern JavaScript frameworks, ideally Vue.js and Nuxt
Experience working with REST APIs
Basic knowledge of e-commerce platforms (e.g. Shopware) is a plus
High quality standards, structured working style and passion for clean, maintainable code
Enthusiasm for modern web technologies, performance optimization and UX
Very good German skills or fluent English
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Für unseren Kunden in Hannover, suchen wir eine:n erfahrene:n, motivierte:n und aufgeschlossene:n Azure DevOps Engineer (50%).
In dieser Rolle unterstützt du ein Unternehmen aus der Leasing- und Finanzdienstleistungsbranche in Deutschland beim Aufbau und der Weiterentwicklung einer modernen Azure-basierten IT-Architektur. Du verantwortest die Konzeption, Automatisierung und Optimierung standardisierter CI/CD-Prozesse und schaffst die technischen Voraussetzungen für einen sicheren, effizienten und skalierbaren Produktivbetrieb. Dabei arbeitest du eng mit verschiedenen Entwicklungsteams zusammen und begleitest den Übergang von der Proof-of-Concept-Phase in den produktiven Betrieb.
Deine Aufgaben:
Aufbau, Konfiguration und Weiterentwicklung von Azure DevOps, insbesondere Azure Repos, Azure Pipelines und YAML-basierten CI/CD-Pipelines
Entwicklung und Automatisierung wiederverwendbarer Deployment-Prozesse und Pipeline-Frameworks mittels Infrastructure as Code (IaC)
Implementierung und Verwaltung von Repository-Strukturen, Branch Policies, Berechtigungen, Service Connections und Sicherheitsmechanismen
Standardisierung und Automatisierung von Build-, Test-, Validierungs- und Deployment-Prozessen für APIs, Adapter und Camunda-Prozessartefakte
Sicherstellung von Qualität, Nachvollziehbarkeit und Sicherheit durch Quality Gates, automatisierte Tests, Versionierung und Security Scans
Implementierung von Monitoring-, Logging- und Observability-Lösungen zur Überwachung und Analyse von Deployments und Betriebsprozessen
Entwicklung von Rollback-, Redeployment- und Recovery-Mechanismen sowie Erstellung technischer Dokumentationen und Betriebsanleitungen
Unterstützung der Entwicklungsteams durch standardisierte Templates, automatisierte Workflows und Best Practices für einen zuverlässigen ProduktivbetriebDein Profil:
Mehrjährige praktische Erfahrung als Azure DevOps Engineer, Cloud Engineer oder Platform Engineer mit fundierten Kenntnissen im Microsoft-Azure-Umfeld
Sehr gut…
IntroFor this position we are only looking for candidates located in Greece, Germany or Austria.
Nairon GmbH is a Swiss startup building AI voice agents that answer and make phone calls for businesses. Our platform runs real-time conversations over the phone and on the web, connected to our customers' telephony and business tools. We value clear communication, thoughtful engineering, and a collaborative approach to problem-solving. Join us as we continue to develop tools that make a difference.
TasksAs a Full-Stack & Mobile Engineer at Nairon GmbH, you will build our product on the web and on the phone in the customer's hand. Your responsibilities will include:
Designing, developing and maintaining our web application with Next.js, React, Tailwind CSS and TypeScript: the flow editor, call analytics, billing and partner tools.
Building our native companion app with Expo / React Native or Swift.
Building features across the stack, from the user interface to the database with Prisma and PostgreSQL, and the Python services behind them.
Owning features end to end: turning customer needs into requirements, shipping them and checking that they help.
Applying DevOps practices to support development and deployment, including Docker and, when appropriate, Kubernetes.
Participating in technical discussions, code reviews and architectural planning.
RequirementsExperience:
Any relevant experience in web or mobile development is welcome; we are open to junior, mid-level and senior candidates who demonstrate strong practical skills and a willingness to learn.
Technical Skills:
Required:
Proficiency with Next.js, React and TypeScript.
Experience building mobile apps with Expo / React Native, Swift or a comparable stack.Nice to have:
Tailwind CSS, Prisma, PostgreSQL or Supabase.
Python and FastAPI for backend services.
Docker and Kubernetes basics; experience with real-time features, audio or AI products.Communication:
English proficiency is essential, both written and …
Aufgaben
Entwicklung und Wartung von Backend-Systemen mit PHP und Laravel
Entwurf und Implementierung von RESTful APIs
Integration von Frontend-Komponenten mit vue.js
Optimierung von Datenbankabfragen (MySQL/PostgreSQL)
Sicherstellung von Code-Qualität durch Code-Reviews und Tests
Zusammenarbeit mit Frontend- und DevOps-Teams
Analyse und Behebung von Fehlern und Performance-Problemen
Dokumentation von Prozessen und Architekturen
Qualifikation
Mehrjährige Berufserfahrung als Backend Developer
Sehr gute Kenntnisse in PHP und Laravel
Erfahrung mit vue.js und modernen Frontend-Technologien
Sicherer Umgang mit relationalen Datenbanken (MySQL/PostgreSQL)
Erfahrung mit Versionskontrollsystemen (z.B. Git)
Kenntnisse in der Entwicklung von RESTful APIs
Erfahrung mit agilen Entwicklungsmethoden (Scrum/Kanban)
Von Vorteil: Erfahrung mit Firebase
Gute Deutsch- und Englischkenntnisse
Benefits
Full Remote
Flexible Arbeitszeiten
Stelle ist auf Stundenbasis / monatliche Abrechnung
Bitte geben Sie bei einer Bewerbung den gewünschten Stundensatz mit an. Vielen Dank.
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