Senior / Principal Software Engineer (Cybersecurity) Lisboa

Senior / Principal Software Engineer (Cybersecurity)
Lisboa
Lisboa, Lisboa, Portugal

Location: Remote (EU, UK or compatible time zones)

About us

At Slash
ID, we’re building a
- generation identity platform that helps organizations secure all identities—human and
- human—across complex,
- cloud environments. Our Identity Protection product detects and prevents
- based threats by continuously monitoring credentials, privileges, and activity across cloud and Saa
S systems.

Security, scalability, and reliability are core to everything we build. Our customers rely on our systems for critical infrastructure protection, and we aim to deliver
- availability,
- latency services that meet
- grade expectations.

We’re a startup operating with lean processes, fast
- making, and a collaborative mindset. You’ll join a small, highly skilled team solving complex technical challenges with
- world impact.

About the role

We’re looking for a Senior or Principal Software Engineer with experience building backend systems for security or infrastructure products. This is a
- time ,
- on engineering role focused on designing and developing Slash
ID’s Identity Protection platform.

As an engineer at Slash
ID, you will:

Design, build, and maintain
- performance backend services for
- time identity threat detection and response pipelines

Develop and scale infrastructure that processes identity data and security events from multiple cloud environments

Implement systems to track, correlate, and analyze activity across credentials, tokens, permissions, and roles

Define detection logic, enforce policy controls, and prevent misconfigurations

Create monitoring, logging, and alerting systems that provide deep visibility into service health and user activity

Contribute to technical architecture decisions and write clear design documentation

Take part in code reviews and
- call rotations

Partner with frontend engineers to expose backend capabilities in the Slash
ID Console

Write
- facing and
- facing documentation as needed

You will use:

Go (Golang)

GCP (Google Cloud Platform)

Neo4j

Big
Query

Postgre
SQL and My
SQL

Redis

Docker

Terraform

You are a good fit if you:

Want to build great products, and not just backend features

Have experience building scalable, secure backend systems in production environments

Have a strong understanding of
- native architecture and distributed systems

Have worked on
- focused products, such as identity, access control, threat detection, or SIEMs

Have experience with Neo4j or other graph databases

Have a deep understanding of application security, including authentication, authorization, and secrets management

Are comfortable building data pipelines and services that process large volumes of events in
- real time

Care about engineering best practices, test coverage, observability, and performance optimization

Work well in
- paced environments with a high degree of autonomy

Are thoughtful in code and communication, with attention to user and developer experience

Are confident writing
- quality Go code (or are comfortable picking it up quickly)

Please note:

The role level (Senior or Principal) will depend on your experience and interview performance

The team is based in Europe and we’re looking for candidates in compatible time zones

Unfortunately, we cannot sponsor VISAs at this time

Slash
ID is a
- first company with flexible working arrangements

For candidates outside the US, employment is via B2B contract or employer of record