# Senior Backend Engineer at Transmit Security

> Israel · Senior · Backend · open. Source: https://alderhq.app/jobs/greenhouse%3Atransmitsecurity%3A8915139002 (read 2026-11-11).

## Facts (observed)

- Company: [Transmit Security](https://alderhq.app/companies/transmit-security)
- Location text: Tel Aviv-Yafo, Gush Dan, Israel; Tel Aviv, Israel - HQ
- Where it can be done from (inferred): Israel (evidence: "Location: Tel Aviv-Yafo, Gush Dan, Israel; Tel Aviv, Israel - HQ")
- Posted: 2026-11-01 (10 days ago)
- First seen by alder: 2026-11-10 · last verified: 2026-11-10
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://www.transmitsecurity.com/about/careers/job?gh_jid=8915139002
- Skills listed (inferred): TypeScript, Java, Scala, C#/.NET, PostgreSQL, MongoDB, Redis, Kafka, Distributed systems

## Pay and sponsorship

- Posted pay: not posted

## Description (the employer's text)

We offer the industry’s only platform that fuses customer identity and anti-fraud solutions: customer identity management, identity verification, and fraud prevention. We sell to industries with large, consumer-facing businesses such as banking, financial services, insurance, fintech, gaming, ecommerce/retail, telco/media, and utilities.

### About the Role

FlexID is Transmit Security’s identity orchestration platform, trusted by some of the world’s largest financial institutions, including Citi, HSBC, UBS and, here in Israel, Bank Leumi, to authenticate millions of their customers. We’re looking for a senior backend engineer to build and evolve a mission-critical system where reliability, security and correctness really matter.

### What you’ll do

- Build new features: login flows, passkeys (FIDO2/WebAuthn), device binding, policies and APIs
- Write backend code every day. We're in Scala, with Akka, MongoDB, Postgres, Redis and Kafka
- Keep the codebase healthy: upgrade stuff, fix vulnerabilities, add tests, clean things up without breaking customers
- Dig into real production issues when a customer needs help, and enjoy solving them
- Help teammates grow through reviews and good conversations
- Use AI tools like Claude Code day to day
### What you’ll need

- B.Sc. in Computer Science or Engineering from a leading university
- 5+ years building large-scale backend systems
- Strong system design and architecture skills
- Strong backend experience in Java, Scala, C#, or TypeScript. We develop with Claude Code, so strong engineering fundamentals matter more than any specific language
- An ownership mindset: independent, persistent, and focused on getting things done
### Nice to have

- Identity management / authentication protocols (OAuth, OIDC, SAML, FIDO)
- Web security experience
- Experience delivering enterprise software, both on-prem and cloud
- Hands-on experience with AI coding tools (Claude Code, Cursor, etc.)
### #LI-TL1 #LI-Hybrid

---
Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/greenhouse%3Atransmitsecurity%3A8915139002 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.