Senior Software Engineer

Segura; São Paulo; Hybrid; BRL 260,000 - 360,000; Full time

Benefits offered by this job

Health Insurance

Dental Insurance

Meal benefit (CAJU card)

Home office allowance

Wellhub (Gympass)

Birthday off

English classes

Job summary

Segura is hiring a Senior Software Engineer to own features from concept to production in a fully remote role with occasional visits to the São Paulo office. You will craft specs, leverage AI agents for rapid full-stack delivery, and implement secure, scalable architectures using modern cloud-native patterns.

The role demands strongest CS foundations, architectural excellence, and proactive ownership in a Go/React/PostgreSQL stack, with a focus on security and automated testing."

Qualifications

• Strong CS fundamentals and design patterns.
• Experience with AI-assisted development and autonomous coding agents.
• Proficiency in Go, React, and PostgreSQL.
• Experience with microservices and distributed systems security.
• Ability to own features end-to-end.

Responsibilities

• Draft unambiguous technical specs, API contracts, and system behavior documents.
• Orchestrate AI-assisted development to speed full-stack features.
• Build resilient, secure architecture using Hexagonal/Ports & Adapters.
• Implement automated testing strategies (Unit, Integration, E2E).
• Work with cloud-native infrastructure (GKE, Istio, OPA, Flux v2, GitLab CI).
• Own feature lifecycle end-to-end and production performance.

Skills

Go

React

PostgreSQL

Distributed systems

Security

Testing

Cloud-native

Tools

Kubernetes

Istio

OPA

Flux v2

GitLab CI

OpenAPI

gRPC

Job description

At Segura®, we are building the future of identity and access management. Just as we lead the global market with our PAM, IAM, and DSM products, we are assembling an elite squad to build an innovative, stealth security product from scratch.
We are looking for a Senior Software Engineer who combines technical excellence, autonomy, and an unshakeable drive to ship high-quality software. Someone who takes full ownership of what they build from concept to production.
Our Vision on Engineering & AI
The game has changed. Tools like Claude Code and Codex aren’t just assistants; they are the new baseline. We don't write every line of code manually anymore. Most of our intellectual effort goes into architecture decisions and Spec-Driven Design (SDD). You will act as an AI-empowered builder: defining specs, orchestrating AI agents, and taking full ownership of code quality, security, and final delivery.
If you're proactive, take extreme ownership of what you build, and care more about real results than buzzwords, you'll feel at home here.

Responsibilities

• Drive Spec-Driven Design (SDD): Spend significant time crafting unambiguous technical specs, API contracts (OpenAPI, gRPC/Protobuf), and system behavior documents that feed both AI agents and system components.
• Orchestrate AI-Assisted Development: Leverage AI agents (Claude Code, Codex) as your primary force multiplier to design and build full-stack features rapidly, taking responsibility for judgment, safety, and rigorous verification.
• Build Resilient & Secure Architecture: Apply clean architectural patterns (Hexagonal, Ports & Adapters) to build resilient, scalable distributed systems that are secure by design.
• Enforce Continuous Quality: Implement rigorous automated testing strategies (Unit, Integration, E2E) to validate code continuously — whether written manually or generated by AI.
• Leverage Platform Infrastructure: Build cloud-native software designed to seamlessly integrate with our internal platform services (GKE, Istio, OPA, Flux v2, GitLab CI).
• End-to-End Technical Ownership: Own feature lifecycle end-to-end, taking full accountability for architectural decisions, implementation quality, and production performance.

Requirements

• Language Agnostic Engineering Fundamentals: Strong background in computer science fundamentals, design patterns, and distributed systems — ready to adapt to our stack (Go, React, Postgres) smoothly.
• AI-First Mindset & Daily Practice: Practical, daily experience using autonomous coding agents and LLM tools as a central part of your real development workflow.
• Architectural Excellence: Practical mastery of decoupled, testable architectures (Clean Architecture, Hexagonal / Ports & Adapters) and Spec-Driven Design.
• Defensive Development & Security Mindset: Deep understanding of software security concepts, building systems that proactively handle hostile environments and edge failures.
• Testing Culture & Rigor: High proficiency in designing complete automated test suites (Unit, Integration, E2E) for continuous delivery.
• Cloud-Native Awareness: Strong comprehension of how microservices operate in containerized environments (Kubernetes, service meshes, sidecars, configuration injection).
• High Autonomy & Ownership: Proven track record of independently driving complex technical tasks to production with minimal supervision.
• English Proficiency: Advanced technical writing and speaking skills to communicate decisions and collaborate clearly.

Nice to Have

• Hands-on experience with Go, React, PostgreSQL, and gRPC/Protobuf.
• Familiarity with cloud-native tooling such as Istio, Open Policy Agent (OPA), Keycloak, or Flux v2.
• Prior experience building early-stage or greenfield products from zero to production (0 to 1).
• Domain knowledge in Identity & Access Management (IAM), PAM, or cybersecurity.
• Public technical contributions (Open Source, articles, talks, GitHub projects).

Benefits:

• Hiring Model: “CLT”;
• Health Insurance (no employee co-payment);
• Dental Insurance (no employee co-payment);
• Meal benefit | CAJU card (R$1,210.00/month);
• Home office allowance (R$100.00/month);
• Wellhub (Gympass);
• Birthday off;
• English classes 100% covered by the company;
• ALURA access for technical and personal/professional development courses;
• All necessary equipment to perform your activities;
• Fully remote position, with opportunities to visit the office in São Paulo when possible/wanted.