Senior Fullstack Engineer - Payments

💼 Hiring: Senior Fullstack Engineer - Payments - Alt 📍 Remote - US (US Citizens and GC Holders only) | 🕐 Posted 1 day ago - September 26, 2026 | 💰 $180K – $200K | 🔗 Python / AWS / React / React Native / Payments / ACH Alt is looking for a Senior Fullstack Engineer to join its payments team. This backend-heavy role is about 70% Python and AWS work on ledgers, processors, ACH, and large-scale transaction systems, with additional frontend work in React and React Native. 📋 Responsibilities include: - Work on payment infrastructure including ledgers, processors, ACH, and large-scale transaction systems - Contribute to frontend development using React and React Native 🔑 Requirements / Must-have: - 5+ years of software engineering experience - Strong backend Python experience (3–4+ years may be considered for highly AI-native engineers) - Hands-on AWS experience - Strong fintech or payments domain experience - Experience with payment ledgers, processors, or lending systems - Experience with ACH processing - Experience building and scaling large transaction systems - React or React Native experience and strong full-stack skills - Ability to work effectively in a remote engineering environment 🛠 Nice-to-have / Preferred: - TypeScript - Crypto or neobank platforms - Modern payment infrastructure - AI coding tools such as Claude - High-volume financial transaction systems 📩 To apply: Email: sirishapollayi@gmail.com. Contact Lakshmi Sirisha Pollayimandala via LinkedIn: https://www.linkedin.com/in/lakshmisirishapollayimandala 🔗 Original post: https://www.linkedin.com/posts/lakshmisirishapollayimandala_seniorsoftwareengineer-fullstackengineer-share-7509523151333056512-cK-u 🛠 Builder Toolkit: Building payment rails or Web3 integrations? STON.fi gives developers a live TON DeFi product with APIs, SDKs, and non-custodial token swaps they can study in production. Explore how routing and wallet flows connect at https://ston.fi 📌 New here? Subscribe and mute notifications to avoid noise. 🔎 Search by role or skill, or check the pinned messages for a short vacancy list. ⚠️ DYOR! I do not verify every job. Requests to download and run files or make a payment are major scam warning signs. 🚩 ❗️ I am not hiring. I only share fresh Web3 jobs posted by others. #NFA #DYOR 🌎 All my other social media! Subscribe!👇 💡 Intern/Junior Web3/Crypto/Blockchain Roles DAILY 📱 Allweb3jobs on Twitter/X 📱 Allweb3jobs on LinkedIn 📱 Coinmarketcap token analysis 🪙 Binance token analysis 💬 Want to promote something or just ask a question? Feel free to reach out: @crypto_vazima