--- title: 'Frontend Engineer (Next.js) at Sent, Inc.' canonical: 'https://feeny.ai/job/frontend-engineer-next-js-sent-inc-kosovo-cp3ft75y5cx8' type: 'job' last_seen: '2026-09-10' --- # Frontend Engineer (Next.js) at Sent, Inc. - **Company:** Sent, Inc. - **Location:** Kosovo - **Employment:** full-time - **Work type:** onsite - **Posted:** 2026-04-24 - **Last confirmed live:** 2026-09-10 - **Apply:** https://jobs.ashbyhq.com/sent/7e7553e5-952e-4670-8f01-f921bab7c910/application **Skills:** Next.js, React, JavaScript, TypeScript, State Management, API Integration, Web Application Development > Build and optimize frontend interfaces for Sent's messaging platform, including dashboards, onboarding flows, and APIs. The role involves writing clean, reusable Next.js components, optimizing performance, and collaborating with design and backend teams to deliver high-quality user experiences. ## Job description Pristina, Kosovo · In-Office ## About Sent Sent is building the messaging infrastructure that powers how businesses communicate with their customers. We provide a unified API for SMS, WhatsApp, iMessage, and RCS, making it simple for developers to reach people on any channel. We've raised $5.8M in funding and we're growing fast. ## The Role We're looking for a Frontend Engineer to build the interfaces developers and businesses use to interact with Sent. From dashboards to onboarding flows, you'll shape how customers experience the platform. ## What You'll Do - Build the product UI. Own and ship frontend features across Sent's web platform — dashboards, settings, onboarding, and more. Write clean, reusable components that work across devices. - Hold a high performance bar. Optimize for load times, rendering performance, and responsiveness. Users notice when things are slow. - Work closely with design and backend. Translate designs into production-ready code and collaborate with backend engineers to integrate APIs correctly. - Own the component architecture. Help define how components are structured, shared, and maintained across the codebase. - Ship fast. We move quickly. You'll be comfortable delivering features in a fast-moving environment without sacrificing quality. ## What We're Looking For - 3+ years of frontend development experience. You've worked in production Next.js or React environments and know how to ship things that hold up. - Strong expertise in JavaScript / TypeScript. You write typed code by default and understand why it matters. - State management and API integration. You know how to handle complex state and connect frontend applications to backend APIs cleanly. - Eye for design and UX. You care about how things look and feel, not just whether they work. - Experience building production-ready web applications in fast-moving environments. You've shipped and maintained real applications under real constraints. ## Why Sent We're a team building hard technical problems in messaging infrastructure. We value directness, craftsmanship, and actually shipping things. In Pristina, you'll be part of a close-knit engineering and operations team doing real work — not support work, not maintenance work. Work that matters. If you want to join a fast-moving company with a clear product and strong backing, this is that opportunity. Sent, Inc. is an Equal Opportunity Employer committed to building a diverse and inclusive team. We encourage applications from candidates of all backgrounds and experiences. ## About Sent, Inc. ## Company Overview - **One-liner**: Sent is a unified API platform that enables developers to send messages across SMS, WhatsApp, RCS, and other channels through a single, intelligent interface. - **Entity Type**: Private (Seed stage) - **Headquarters**: New York, New York, United States - **Founded**: 2023 (December) - **Founders**: Daniel Vataj (CEO), Betim Drenica (CTO) ## Core Business - **Primary industry**: Messaging infrastructure / Developer tools / Telecommunications - **Target customers**: B2B – developers, engineering teams, and businesses (SMB to Enterprise) that need reliable, multi-channel messaging. - **Mission or purpose**: To solve the reliability and complexity problems in messaging infrastructure, giving developers a simple, transparent, and dependable way to communicate with users across any channel. ## Products & Services - **Sent API**: A single RESTful API that abstracts multiple messaging channels (SMS, WhatsApp, iMessage, RCS). Handles authentication, rate limiting, retries, and automatic fallback between channels. Includes a sandbox mode for testing. - **Intelligent Routing Engine**: Real-time decision-making for message delivery based on cost, delivery success rates, recipient preferences, and geographic optimization. - **Smart Routing & Failover**: Automatically attempts delivery through fallback channels (e.g., SMS → WhatsApp) when the primary channel fails, requiring no additional code. - **Real-Time Analytics & Webhooks**: Track message lifecycle, delivery confirmations, read receipts (where available), bounce reasons, and aggregate performance metrics. ## Market Standing - **Valuation/Market Cap**: Not disclosed - **Key Metric**: Total Funding – conflicting reports: **$5.8M** per company website [sent.dm](https://www.sent.dm/en/company/about-us) vs. **$4.55M** per LinkedIn (Pre-Seed $1.0M + Seed $3.5M) [linkedin.com](https://www.linkedin.com/company/sentdm) - **Notable Investors**: Bessemer Venture Partners, Urban Innovation Fund (Seed round lead); prior round includes 2 unnamed investors. Advisor/Investor: Brett Perlmutter. - **Growth Signals**: - Sent over **550 million** messages (company website) - **5,000+** active developers on the platform - Headcount grew **650% YoY** to 25 employees (LinkedIn) - Opened engineering presence in Kosovo and operations in Botswana - **99.9%** uptime SLA guarantee ## Competitive Advantages - **Unified API vs. point integrations**: Single integration for multiple channels, reducing maintenance overhead. - **Intelligent routing & failover**: Automatic cost and delivery optimization without developer intervention. - **Developer-first experience**: Clean docs, public roadmap, honest pricing, and transparent error handling. - **Global by design**: Distributed team (US, Kosovo, Botswana) enables local compliance and carrier relationships. - **Built by engineers who felt the pain**: Founders personally experienced messaging reliability failures, driving product obsession. ## Strategic Focus - Expand supported channels (always evaluating new ones like RCS and iMessage). - Deepen outbound compliance capabilities – hiring for international messaging compliance roles (WhatsApp, RCS). - Grow self-serve developer funnel through SEO, paid channels, and lifecycle experimentation. - Strengthen partnership ecosystem (technology, channel, and carrier partners). - Scale enterprise sales with dedicated Account Executives and Technical Account Managers. ## Why Work Here - **Culture highlights**: “Built for developers, by developers” – transparency in pricing, public roadmap, and honest docs. Values: Reliability, Simplicity, Innovation, Transparency. - **Work model**: In-office at the New York City HQ (157 W…), with a globally distributed team across Kosovo and Botswana. Remote/hybrid policy not explicitly stated, but roles are listed as “In-Office” on Built In NYC. - **Engineering culture**: Strong emphasis on developer experience, automation, and owning the full stack. Team includes Staff Engineer for Networks & Protocols. Open roles currently in compliance, demand generation, partnerships, account executive, and technical account manager. - **Notable perks**: Startup equity, early employee impact, and opportunity to shape messaging infrastructure for millions of users. Public roadmap and open feedback loop with the developer community. ## Sources 1. [sent.dm – About Us](https://www.sent.dm/en/company/about-us) 2. [LinkedIn – Sent](https://www.linkedin.com/company/sentdm) 3. [Built In NYC – Sent Jobs](https://www.builtinnyc.com/company/sent/jobs) 4. [Sent API Docs – Platform Overview](https://docs.sent.dm/start/concepts/platform-overview) 5. [Ashby – Sent Jobs](https://jobs.ashbyhq.com/sent) ## Other roles at Sent, Inc. - [Strategic Finance](https://feeny.ai/job/strategic-finance-sent-inc-new-york-w8qaqqc9k7ry) — New York, NY - [Sales Engineer](https://feeny.ai/job/sales-engineer-sent-inc-new-york-zz5cz2pq32mh) — New York, NY - [Content Engineer](https://feeny.ai/job/content-engineer-sent-inc-new-york-1ekv8mp5jdy7) — New York, NY - [Compliance Engineer](https://feeny.ai/job/compliance-engineer-sent-inc-kosovo-tc3hy9478av8) — Kosovo - [QA Engineer](https://feeny.ai/job/qa-engineer-sent-inc-kosovo-tkzcj2xp1q6a) — Kosovo - [Demand Generation](https://feeny.ai/job/demand-generation-sent-inc-new-york-brtx5gcfsq24) — New York, NY - [Founding Partnerships](https://feeny.ai/job/founding-partnerships-sent-inc-new-york-33jcvcb7qm78) — New York, NY - [Developer Advocate](https://feeny.ai/job/developer-advocate-sent-inc-new-york-761f7p5bgexp) — New York, NY - [Full Stack Engineer](https://feeny.ai/job/full-stack-engineer-sent-inc-kosovo-cmzsmbnkph1x) — Kosovo - [Backend Engineer (.NET)](https://feeny.ai/job/backend-engineer-net-sent-inc-kosovo-a2y38t101z9h) — Kosovo