Tech Lead

Job Summary

Call Service Developer  Required is a developer with strong Java expertise, with great understanding of object oriented, functional and event driven paradigms. Preferably the candidate should have some good level of experience with telecom domain, although this can be substituted with strong proficiency in client server model, and with expertise on HTTP. They should be well versed in application performance tuning e.g. GC, concurrency, RDBMS, Linux, docker and CI/CD. They will join a team of Java developers developing SIP B2BUA application servers, to provide SIP routing and feature sets for large enterprise customers. Sprint based development will focus on incremental development with focus on releasable code. They will be expected to implement feature logic based on high and low level designs, as well as implement low level designs, data modelling, documentation, performance optimisation, bug fixing, etc. Skill Importance (Essential/Desirable/Highly Desirable) Level (1 = Beginner to Comments 4= expert) Java Essential 4 Critical skill, must have 5+ years Object Oriented Programming Essential 4 Critical skill, must have 5+ years SQL (RDBMS) Essential 4 Critical skill, must have 5+ years HTTP, Client Server Model Essential 4 Critical skill, must have 5+ years SIP Highly Desirable 4 Critical skill, but can be substituted if expert HTTP knowledge JAIN SLEE Highly Desirable 4 Critical skill, but can be substituted if expert Java, event driven programming knowledge Linux Essential 4 Critical skill, must have 5+ years Scripting (e.g. Bash, Python) Essential 3 Key skill, must have 3+ years Git Essential 3 Key skill, must have 3+ years Docker/Podman/Containerd Essential 3 Key skill, to a sufficient level for daily development activities Maven, Ant Essential 2 Must have decent understanding, but can be substituted for strong gradle skills Spring Highly Desirable 3 Key skill, should have good experience Kotlin Highly Desirable 3 Key skill, should have good experience Functional Programming Highly Desirable 3 Key skill, should have good experience Event Driven Programming Highly Desirable 2 Should have decent experience CI/CD, e.g. GitLab CI, GitHub Actions, Azure DevOps, Jenkins Highly Desirable 2 Should have decent understanding TCP/IP Highly Desirable 2 Should have decent understanding NoSQL, e.g. Redis, Consul Highly Desirable 2 Should have decent understanding Message Queues, e.g. Kafka, Redis Highly Desirable 2 Should have decent understanding Reactive Programming