Remote Backend Engineer - Email Delivery Infrastructure at Scale

Jobgether SRL; Netherlands; Remote; EUR 133,000 - 151,000; Full time

Benefits offered by this job

Fully remote position with flexible S

Competitive compensation: $150,000–$-

Job summary

Lever, Inc. is seeking a Backend Engineer (MTA) based in the Netherlands to build and operate backend infrastructure powering high-volume email delivery.

You will own systems for SMTP delivery, routing, retries, throttling, and delivery controls while collaborating with Trust & Safety and Core Sending teams. The role emphasizes reliability, observability, and scalable design, with a fully remote setup and occasional travel for team off-sites and events.

Qualifications

• Strong professional experience in backend engineering.
• Experience with email, messaging, notifications, or high-volume delivery systems.
• Understanding of queues, workers, retries, idempotency, rate limits, backpressure.
• Knowledge of SMTP, MTAs, DNS, bounces, deferrals, IP pools, and mailbox-provider behavior.
• Focus on reliability, observability, and incident avoidance.
• Ownership mindset and collaborative approach.
• Experience with workloads and large-scale apps.
• Familiarity with email best practices or willingness to learn.
• Experience with TypeScript and/or Go is highly valued.
• Ability to work effectively in fully remote teams.

Responsibilities

• Build, operate, and continuously improve email transport and delivery infrastructure.
• Develop systems for SMTP delivery, MTA operations, routing, retries, backoff strategies, and delivery controls.
• Design throttling mechanisms across domains, providers, customers, and IP addresses.
• Build infrastructure supporting shared IP pools, dedicated IPs, warmup execution, and reputation-aware routing.
• Improve handling of bounces, deferrals, transient and hard failures.
• Develop internal tools to investigate delivery issues across customers, domains, routes, IPs, and events.
• Design systems for safety, observability, reliability, and operational efficiency of email sending.
• Translate sender-reputation strategies into robust backend systems and controls.
• Partner with Trust & Safety and Core Sending teams to protect the sending network.
• Participate in incident response for sending and deliverability issues.
• Take part in on-call responsibilities for critical services.

Skills

Backend engineering

Email infrastructure

Distributed systems

Reliability & observability

High-volume delivery systems

Remote collaboration

Tools

TypeScript

Go

PostgreSQL

Datadog

AWS

Job description

Lever, Inc. is seeking a Backend Engineer (MTA) based in the Netherlands to build and operate backend infrastructure powering high-volume email delivery.

You will own systems for SMTP delivery, routing, retries, throttling, and delivery controls while collaborating with Trust & Safety and Core Sending teams. The role emphasizes reliability, observability, and scalable design, with a fully remote setup and occasional travel for team off-sites and events.