Senior Software Engineer (Telco & Comms)

About the role

Requirements

• - 8+ years with Java 17+, Spring Boot, and Spring Security, debugging JVM and Spring issues from thread dumps, heap dumps, and traces.
• - Designs and operates microservices for client traffic, with API versioning and testing across unit, integration, contract, and load.
• - Designs for failure and scale: idempotency, retries, circuit breakers, and caching. Diagnoses bottlenecks with data.
• - Strong relational data modeling and query design, primarily in MySQL, with schema and index tuning proven under load.
• - Treats security as a design input: OWASP Top 10, authentication and authorization, secrets management, and data handling.
• - Writes designs other engineers can build from, and reviews peers' designs.
• - Deploys and runs services on Kubernetes with Docker, Helm, AWS, and CI/CD, and debugs failed deployments from the chart or pipeline.
• - Owns a change from design through on-call, and instruments it so a fault shows before a client reports it.
• Nice to Have :
• - Reactive Java in production: Spring WebFlux, Project Reactor, RxJava, or Vert.x.
• - MNO and telco integrations: number insight, SIM swap, and other network signals.
• - Authentication and authorization standards: OAuth 2.0, JWT, SAML, FIDO, or WebAuthn.
• - Has shipped into banking, payments, or another regulated industry, and has faced an audit or client security review.
• - Runs services against contractual uptime commitments: SLIs, SLOs, and error budgets.
• - Runs Kafka in production, and has diagnosed consumer lag or rebalance issues.
• - Manages infrastructure as code with Terraform.

Responsibilities

• Key Responsibilities :
• - Write production-ready code, and know the pipeline and the chart that ship it.
• - Write low-level designs another engineer can build from, and represent the team in architecture reviews.
• - Threat-model each feature, and design authentication, authorization, and data handling in from the start.
• - Instrument before release, take a turn on call, and drive faults to a root cause.
• - Find technical gaps early, propose each fix with a cost and a benefit, and use AI tooling.
• - Mentor engineers, hold the standard on tests and error handling, and interview candidates.

Skills

• Java 17+
• Spring Boot
• Spring Security
• debugging JVM and Spring issues
• microservices design and operation
• API versioning
• unit/integration/contract/load testing
• idempotency, retries, circuit breakers, caching
• MySQL relational data modeling and query design
• schema and index tuning
• OWASP Top 10
• authentication and authorization design
• secrets management
• Kubernetes
• Docker
• Helm
• AWS
• CI/CD
• observability/instrumentation
• on-call incident management
• architectural reviews
• threat modeling