Back End Developer & Expert Backend Engineer

The jeans you bought at one of Israel's biggest fashion chains. The tent, sleeping bag, and hiking boots from your last trip down south. The coffee at the corner café, the gym membership, the vending machine that finally took your bill on the third try, the subscription to that app you use every morning.

Somewhere in that transaction there's a decent chance our code ran.

PayPlus is the fintech quietly powering a huge slice of Israeli retail, hospitality, and commerce — from the country's largest fashion and outdoor retailers to the neighborhood café. Our EU sister company, Wittix, is an EMI licensed by the Bank of Lithuania — giving us a rare dual-market playground where one codebase clears ILS through Shva and EUR through SEPA.

We process millions of transactions, serve thousands of merchants, and ship fast. We're not a legacy processor bolting APIs onto a mainframe — we're building the platform from the ground up, in Go, event-driven, from the terminal SDK all the way up to the billing engine.

If you want to own real problems, write code that moves actual money, and see the impact at the register around the corner this is the team.

What you'll do

• End-to-end ownership of backend services — from the design doc to the Grafana dashboard. Research, architect, ship, monitor, iterate. No throwing code over the wall.
• Build the core platforms powering PayPlus and Wittix: BillingOS (our proprietary billing engine), LoyaltyOS, Commerce, Subscription OS, Payment Orchestration, Shipping, and more. These are first-class platforms, not side projects.
• Shape architecture that matters. We're actively migrating from a monolith to ~11 domain microservices across two regulated entities. You'll help decide what "good" looks like.
• Design event-driven systems on Kafka, orchestrate long-running sagas on Temporal.io, and build APIs that POS terminals, web checkouts, and partner integrations hit in production every second.
• Learn real-world payments deeply — the Israeli layer (Shva, Masav, Bit, tashlumim, EMV J5) and the EU layer (SEPA, PSD2, SCA). Knowledge that compounds for the rest of your career.
• Raise the bar on design reviews, code quality, reliability, and observability. Mentor the engineers around you.
• Collaborate tightly with Frontend, Mobile (Android POS in Kotlin), DevOps, and Product to ship features merchants actually feel.

What you'll bring — Backend Engineer

• 4+ years of backend engineering experience. Go, Node.js, or Rust backgrounds are all welcome. If Go is new to you, we'll teach you.
• Deep comfort with distributed systems — microservices, message queues, the real tradeoffs.
• Strong database chops — we run PostgreSQL and MongoDB in production and you should have opinions about both.
• Kubernetes on a major cloud (AWS in our case), and a real understanding of what "production" means.
• CI/CD fluency — shipping safely, multiple times a day.
• BSc in CS / Software Engineering or equivalent hands-on experience.

What you'll bring — Expert Backend Engineer

Everything above, plus:

• 8+ years of backend engineering experience, with a clear track record of shipping and operating large-scale distributed systems in production.
• Proven architectural leadership — you've designed systems that other engineers built on top of, and you can defend the tradeoffs.
• Deep expertise in at least one domain we care about: payments, billing, high-throughput event systems, orchestration (Temporal / workflow engines), or regulated fintech.
• Technical influence across teams — design reviews that level up the org, mentorship that compounds, opinions that move consensus.
• Comfort with ambiguity — you can walk into a blank Notion page titled "how should we do X?" and walk out with a spec the team agrees to build.

Nice to have (both levels)

• Payments, billing, or fintech background — any domain where "exactly once" isn't a meme but a requirement.
• Temporal.io, workflow orchestration, or saga patterns.
• Experience with high-throughput event pipelines on Kafka.
• Hebrew (engineering docs are mostly English — we'll work with you either way).

Our stack

Go, Node.js, Kotlin / Android, React, PostgreSQL, MongoDB, Kafka, Temporal.io, Redis, AWS, Kubernetes.

Why PayPlus

• Real scale, real money, real merchants. Your code runs at the register — at some of the biggest retail chains in the country and thousands of smaller businesses.
• Scope that rivals much larger companies. We're building billing, loyalty, commerce, shipping, subscriptions, and payment orchestration in-house — each as a proper platform.
• Dual-market exposure. ILS and EUR, Israeli and EU regulatory regimes, in the same monorepo.
• Modern, opinionated stack. Event-driven, Go-first, Temporal-native.
• A 2,000 sqm office in Holon with a proper kitchen that actually gets used — real meals, real coffee, real space to think. Not a microwave and a sad Nespresso.
• The best teammates you'll work with. People who are genuinely good at what they do, curious about what you do, and care about shipping the right thing — not just shipping.
• Small enough that you'll ship to production in your first week. Big enough that the work actually matters.
• On-site culture. We're a team — not a Slack channel.