Technical Software Engineer: IBM AIX

Software Developers at IBM are the backbone of our strategic initiatives to design, code, test, and provide industry-leading solutions that make the world run today - planes and trains take off on time, bank transactions complete in the blink of an eye and the world remains safe because of the work our software developers do. Whether you are working on projects internally or for a client, software development is critical to the success of IBM and our clients worldwide. At IBM, you will use the latest software development tools, techniques and approaches and work with leading minds in the industry to build solutions you can be proud of. Your Role and Responsibilities As an AIX Development Support Specialist,

you are responsible to resolve customer reported issues related AIX Operating system and its related components.

Responsible for advanced problem-determination (Root cause analysis), publish technical notes and to give technical support for world-wide IBM Power AIX customers.

You will be working in the AIX Operating system environment under Development Support Organization (DSO).

The AIX Development Support team is the primary interface between AIX Development team and Power AIX operating system customers.

The development support professional will assist with problem diagnosis and root cause analysis down to the line of code of AIX operating system utilizing various power hardware systems.

Required Technical and Professional Expertise

1 to 3 years of experience in IT industry, more specifically in AIX/LINUX/UNIX OS skills

Extensive experience in programming in C

C (with data structures/advanced data structures), compilation stages, UNIX/Linux commands, shell scripting, UNIX Internals (process management, memory management, File system management, inter process communication, io, socket programming), familiarity with binary/octal/hex/ascii packets and decode them to control structures, crash analysis, AIX system boot process and issues.

System Cloning, Backup, mksysb, Familiarity with AIX/Linux environment, Commands and filesystem.

Os Internals:Knowledge of IPC (Inter process Communication), Semaphore, Mutex, Process Synchronization, Shared Memory, Process control block

VMM (Virtual Memory Mgmt) Virtual Address, Virtual Memory, Memory Management, DMA, Memory Leaks, CPU Scheduling, Process states, System throughput, CPU scheduling algorithms, Page replacement policy, page tables, Page-frame mapping, Page replacement algorithms

Component Specific skills:

Experience on AIX/VIOS, Virtualization, C & Socket Programming.

Knowledge on Networking Concepts and its Protocols.

In-depth understanding of TCP/IP stack and Device Driver internals.

Experience using debugging/analysis tools such as tcpdump/iptrace, Wireshark, KDB, GDB/DBX, cscope.

Knowledge on Network configuration and workings of EtherChannel, Shared Ethernet Adapter, SR-IOV, vNIC, Virtual Ethernet Adapter on AIX/VIOS.

Extensive Experience using HMC GUI/cli

Excellent communication both written and verbal, should have experience of handling cases of large customers issues, Client facing.

Preferred Technical and Professional Expertise

Good understanding of the Server Architecture, Virtualization concepts, TCP-IP protocols/RFCs.

Proven experience in Programming using C/advanced C programming language. Shell Scripting, perl scripting skills are added advantage/desirable skills.

Setting up lab environment to recreate the client issue to debug/troubleshoot the issue, root cause the issue, fix the issue on lab setup and verify/validate the fix.

Experience in using debugging tools like KDB/kdb/GDB, trace/truss/LMT analyzers.

Should have very good Networking Skills: IPv4/IPV6 Routing, Ethernet channel Broadcasting and Multicasting.

Very good experience in using Networking Protocols:TCP-IP, UDP, ICMP, ARP

Good knowledge of Wireshark Packet Analyzer, KDB for Kernel Trace Analysis and Dump Analysis. switch concepts and understanding of VLAN and shell scripting

Must have good understanding of TCPIP & basic trouble shooting, Unix Internals & IPC mechanisms, Hands on in debugging like gdb or kdb , OS internals