Backend Engineer, MTA
$150k - $170kResend
Resend is building the most accessible email platform for developers. As we’ve grown to 4M+ users and continue to onboard thousands of new users every day, the pressure of maintaining a safe place for good senders continues to build. This role is fully remote-based in Americas or European time zones, with some expected travel for team off-sites, conferences, meetups, and more. Read more about how we work, how we hire, and what we value here com/handbook. IN THIS ROLE, YOU WILL… - Build and operate Resend’s email transport infrastructure - Work on SMTP delivery, MTA systems, routing, retries, backoff strategies, and delivery controls - Design systems for domain-level, provider-level, customer-level, and IP-level throttling - Build infrastructure for shared IP pools, dedicated IPs, warmup execution, and reputation-aware routing - Improve how Resend classifies bounces, deferrals, transient failures, hard failures, and delivery outcomes - Build tools that help the team debug delivery issues by customer, domain, mailbox provider, route, IP, message type, and event - Help design systems that make sending behavior safer, more observable, and easier to operate - Translate reputation strategy into backend systems - Partner with Trust & Safety and Core Sending to build controls that protect Resend’s sending network from abuse - Participate in incident response for sending, provider, and deliverability-sensitive issues - Be on-call for critical services YOU WILL BE A GREAT FIT IF YOU...
- Have strong backend engineering experience - Have worked on email, messaging, notifications, communications, infrastructure, or other high-volume delivery systems - Understand queues, workers, retries, idempotency, rate limits, backpressure, and distributed systems - Have experience or strong interest in SMTP, MTAs, DNS, bounces, deferrals, DNS, IP pools, and mailbox-provider behavior - Care about reliability, observability, operational excellence, and reducing blast radius - Have low ego, high ownership, and strong taste for simple systems YOU WILL BE AN EXCEPTIONAL FIT IF YOU ALSO... - Have experience working on applications with a high workload - Know about email best practices, or are willing to learn more about this space - Are experienced in Typescript and Golang WHAT IT MEANS TO JOIN THE TEAM: - Autonomy to "just ship it" - 100% remote team with flexible working schedules - Modern tech stack (Typescript, AWS, Go, Postgres, Datadog) - Honest and low-ego team - Ownership of problems and solutions - Comp: $150,000 - $170,000 USD, commensurate with experience ABOUT RESEND We are building the modern email sending platform for developers. We care deeply about quality, craft, and the developer experience. Our fully remote team of 50 spans 15 countries and counting. We're backed by a16z, Y Combinator, and others. Meet the humans →
$150k - $170k
...infrastructure - Work on SMTP delivery, MTA systems, routing, retries, backoff strategies... ...- Translate reputation strategy into backend systems - Partner with Trust & Safety and... ...GREAT FIT IF YOU... - Have strong backend engineering experience - Have worked on email, messaging...SuggestedFull timeRemote workFlexible hoursResend
Europe28 days ago- ...individual investors and institutional clients. The Pro team is responsible for everything to do with the trading backend services such as the matching engine, market data gateways, internal and external APIs, and various other trading services. The team is located...SuggestedFull timeLocal area
Kraken
Romaniaa month ago $140k - $180k
...developers using it. We’re building our core team of software engineers to support millions of emails sent every day. We’re a small team... ...experience, with substantial experience building and operating backend services in production - Have worked with queues, asynchronous...SuggestedFull timeRemote workResend
Europea month ago- ...Location: We offer a Hybrid/Remote working policy. FUNCTION: Engineering We're looking for a talented Senior Software Engineer to join... ...What we need from you: ~5+ years experience as a Backend Engineer, preferably in FinTech or payments ~ Expertise in Java...SuggestedFull timeRemote workWorldwideFlexible hoursShift workRotating shift
BVNK
Bulgaria29 days ago - ...ONLY WROTE A CRISP OVERVIEW. WHAT YOU'LL BE DOING IN THIS ROLE - Design and build backend systems that are clean, testable, and efficient - Ship customer-facing features as an engineer in one of our product teams - Work closely with Deployment, go-to-market teams and...SuggestedFull timeRemote work
- ...What you will do Everything we ship runs on data, and the systems that collect, move and store that data need an owner. As Backend Engineer - Data & Orchestration, you take a data platform that grew fast and turn it into one system the whole company can rely on. You...Contract workImmediate startRemote workWorldwideNight shift
- ...As an engineer focused on backend systems at Alchemy, you'll be working with one of the most sophisticated and high-throughput distributed systems in the blockchain world. You'll focus on architecting and building new systems as well as improving existing ones for a platform...Remote jobFull timeWork at officeFlexible hours
- ...Systems (USA) is a dynamic team of the best & brightest software engineering specialists and solutions innovators, from around the world.... ...qualifications: - 5+ years of development experience with backend technologies, including proficiency in multiple backend languages...Full timeWork at officeRemote workFlexible hours
- ...millions units already sold in 200 countries. The team To sustain the company's growth, Ledger is looking for a Senior Scala Backend Engineer to join the Cloud Wallet team . This team builds and operates the backend services that power blockchain account management...Remote jobFull timeWork from homeFlexible hours
- ...Role The mission of this role is to build and own the backend systems that power Morpho's consumer-facing products: reliable,... ...transaction volumes grow. Collaborate closely with frontend engineers and product to scope, ship, and iterate on end-to-end features...Remote jobFull timeShift work
- ...into production (not just demos), this is a rare role where that experience is the main event. We’re hiring a hands-on Fullstack Engineer to build “AI features” end-to-end inside a cybersecurity product: gather the right context from the platform, orchestrate LLM/...Permanent employmentFull timeLocal areaRemote workEuropea month ago
- ...The Role Infrastructure is our bread and butter at Alchemy. As an engineer focused on infrastructure and backend systems at Alchemy, you'll be working with one of the most sophisticated and high-throughput distributed systems in the blockchain world. You'll focus on...Remote jobFull timeWork at officeFlexible hours
- ...Platform. We are a multidisciplinary group of internal software engineers and product owners who develop and operate cybersecurity... ...AI toolchain for the automated vulnerability assessment of our backend systems. You design automated methods for identifying vulnerabilities...Full timeFlexible hours
- ...discovery across ChatGPT, Google AI Overviews, Gemini, and Perplexia. As a Senior Full-Stack Developer with backend focus, you'll own the architecture of our Content Engine and scale the systems powering our platform. You'll work directly with the founding team in Munich...Full time
- ...society’s – you’ll feel right at home. The role As a Senior Backend Developer , you will be responsible for developing and... ...security, and scalability. You’ll work closely with the rest of the engineering team to tackle complex technical challenges and build...Remote jobFull timeWork at officeFlexible hours
- ...Responsibilities Design, develop, and customize SAP Fiori and UI5 applications Collaborate with backend and functional teams to deliver intuitive, high-performing solutions Maintain and enhance existing applications, ensuring quality, performance, and usability...2 days per week3 days per week
Bluebird
Hungarymore than 2 months ago - ...Web Crawler Engineer Location Anywhere (US-EU timezones) Job posted November 25, 2025 Type ⚙️ Engineering About us We’re a fast-growing Seed-stage startup building the next-generation web search engine designed for AI and LLM applications. We are...H1bRemote workFlexible hoursEuropemore than 2 months ago
- ...institutional clients. We are currently seeking an experienced Software Engineer to join our growing Payments & Blockchain team to be focused on... ...engineering ~ Proficiency in writing clean, scalable backend code in a systems language, with preference to Rust or Node/...Remote jobFull timeLocal area
- ...experience levels, from those a few years into their career to seasoned engineers. If you are just starting your career but already have... ...talk to you. We’re looking for a Product Engineer with a strong backend specialization, a solid technical foundation, and experience...Full timeRemote workWork from homeShift work
- ...individual-contributor role calibrated against SDE 3 / Senior Engineer, driving architecture decisions, mentoring engineers, and being... ...software engineering experience, with a significant portion building backend/distributed systems; prior experience in fintech, payments, on...Full timeContract work
- ...Product Engineer Delvo builds AI tools for strategic procurement. Engineers own the complete product cycle: understand customer needs... ...have shipped software for real users, possess strong frontend, backend and database foundations, and demonstrate product judgment, initiative...Full time
Delvo
Germany25 days ago - ...cross-team collaboration, both technically (mobile app, cloud backends, and the Waymo Driver) and functionally (operations, product,... ...infrastructure. In this hybrid role, you will report to an Engineering Manager. You Will Help build and evolve mission-critical...Full time
Waymo
Poland29 days ago - ...global impact, and the chance to grow fast with a world-class team, ARQ is the place to do it. What we're looking for As a Backend Engineer, you’ll design, develop, and maintain scalable, secure, and high-performing backend systems that power our innovative products...Remote jobFull timeRelocation package
- ...Back End Developer / Integration Engineer Country: Spain IT STARTS HERE Santander ([ is evolving from a global, high-impact brand... ...platform. THE DIFFERENCE YOU MAKE Openbank is looking for a Backend Developer based out of Madrid or Valladolid. As a Back End...Full timeWork at officeShift work
- ...elevate your career. What we’re looking for ~6+ years of backend development experience using Java and/or Kotlin, with Spring... ...background jobs and batch processing using Spring Batch or a BPMN engine, including failure recovery. ~ Knowledge of migration...Local areaImmediate startShift work
- ...investors and institutional clients. The Exchange team is responsible for everything to do with the trading backend services such as the matching engine, market data gateways, internal and external APIs, margin systems and various other trading services. The team is...Full timeLocal area
Kraken
United Kingdoma month ago - ...the operating system with the whole company in it: Product, Engineering, Compliance. How operations run isn't a side tool bolted onto... ...doc. You're comfortable with APIs, data flows, and frontend/backend logic: you don't need to code, but you need to understand what...Full timeRemote work
Finary
Francea month ago - ...video-processing pipelines in FPGA logic. You will develop backend interfaces for high-speed communication, for example Ethernet-... ...bring: You have successfully completed a degree in electrical engineering, computer science, embedded systems or a comparable field and...Remote workWork from homeHome officeFlexible hours
Bluebird
Hungarymore than 2 months ago - ...their greatest potential. Title and Summary Manager, Software Engineering (Java) Overview This role sits within Mastercard's Open... ...extensive experience building robust, scalable, and maintainable backend systems using SpringBoot. • Experience in architecting and...Full timeWorldwide
Mastercard
Poland29 days ago - ...[ Our Story ]( We are a global team of founders, operators and engineers, obsessed with building the best products. We work at the cutting... ...on Plasma. The Role We're looking for a staff+ engineer, backend-leaning but comfortable full-stack, to join one of Plasma's...Full timeWork at officeLocal areaImmediate startVisa sponsorshipRelocation package
Plasma
United Kingdoma month ago
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