Senior SysOps&Linux Administrator

Redge Media CDN, Cloud Coder, Storagesystems and applications – development / architecture planning / administration

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Redge Media is used by the largest and most popular Internet TV stations in Poland, such as player.pl or playnow.pl. Thanks to our technology, millions of users of these portals can enjoy access to their favorite video content every day. The mobile applications we have created have remained in the top places of popularity for many months, both in the Google Play store and the Apple Appstore.

We want you to be an architect / senior engineer in areas touching below keystones of our system (which is mostly our company own code intertwined with COTS SW components, all pure Linux based)

– Terabit-scale CDN –constantly growing , currently expanding also abroad (50Gbps+ traffic served from a single 1U COTS x86 server)

– Advanced BGP and load based CDN traffic steering

– International multidatacenter environment with BGP IP (v4+v6) core and multi terabit network capacity

– Best in class Anti DDoS scrubbing solution based on DPDK library (Mpps / 100-200 Gbps scrubbing capacity on 1U COTS x86 server)

– Cloud video/sound encoding/decoding platform based on GPUs and CPUs alike with automated orchestration and provisioning (up to 4K video quality with multiaudio, DRM, DAI, etc.)

– Multi PB geo redundant distributed object storage

Requirements

— Good knowledge of IPv4 / TCP / UDP (flow control, MSS, MTU, congestion control), debugging (tcpdump, wireshark, protocol analysis);

— Good knowledge of Linux kernel customisation, system tuning / tweaking;

— Experience with performance profiling;

— Experience with kernelinstrumentation;

— Knowledge of process debugging/tracing/gdb;

— Good knowledge of Apache/NGinx advanced tuning &configuration;

— Very good knowledge of scripting (bash / python).

Nice to have

— BGP protocol

— DPDK library experience

— SQL (complex queries, reports)

— programming experience

— high level video concepts (containers (mp4, mkv), codecs (h.264/h.265), video encoding/decoding, DRM)

— multicasts;

— concepts of cryptography (SSL, certificates)

Technologies used in dailywork

— PXE / tftp

— Apache / Nginx / NVarnish / SQL

— RAID

— corosync / pacemaker / ipvs

— Hadoop / ELK / Fluent

— Nagios / Grafana / Prometheus / InfluxDB

— Fuse (+own Fuse based implementations)

— GlusterFS

— SQL queries and reports

— Python/bash/perl

— C/C++ code debugging support for our developers (recreating production errors in lab environment, code tracing)

Our technology stack
We offer

— participation in ambitious projects

— attractive salary

— flexible working hours

— non-corporate atmosphere.

Benefits

— private medical care

— co-financing of the Multisport card

— training budget

— language courses

— fruit Mondays

Transparent recruitment process

Contact us.
We are waiting for you!

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We kindly inform that we will be contacting only selected candidates.

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Uprzejmie informujemy, że skontaktujemy się tylko z wybranymi kandydatami.

Odpowiadając na powyższą ofertę pracy wyrażają Państwo zgodę na przetwarzanie przez Redge Technologies sp. z o.o. z siedzibą w Warszawie danych osobowych zawartych w Państwa zgłoszeniu rekrutacyjnym zgodnie z Polityką Prywatności. Jeśli chcą Państwo wziąć udział również w przyszłych procesach rekrutacyjnych prowadzonych przez naszą spółkę, prosimy o załączenie do zgłoszenia rekrutacyjnego następującej klauzuli: „Zgadzam się na przetwarzanie przez Redge Technologies sp. z o.o. z siedzibą w Warszawie danych osobowych zawartych w moim zgłoszeniu rekrutacyjnym w ramach przyszłych procesów rekrutacyjnych”.