 Arnav Sharma   arnav_s@ar.iitr.ac.in  
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  +91 8580-965219  
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 SKILLS   NextJS, Golang, gRPC, Websockets, Redis, Serverless-Infra,  Containerization 
 EDUCATION 
 IIT Roorkee  Architecture   June, 2027 
 WORK EXPERIENCE 
 Orange Search  Co-Founder/CTO   June.  2025 – Present 
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 Secured  $5K  in  incubator  funding  to  architect  and  build  a  quality-first  search  engine,  including  a  distributed  data  pipeline 
 and ML classification service. 
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 Engineered  an  IOPS-optimised  Go  crawler  capable  of  processing  over  1,000  URLs/second,  minimising  database  writes 
 with   asynchronous   batching   and   a   Redis   Bloom   filter   to   achieve   99%+   de-duplication   efficiency   before   hitting   the 
 database. 
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 Built  a  hybrid  search  engine  using  Reciprocal  Rank  Fusion  (RRF)  to  accurately  rank  results  from  multiple  signals  (keyword, 
 vector, PageRank). 
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 Built   and   deployed   a   comprehensive  observability  stack  with  Prometheus  and  Grafana  ,  providing  real-time  pipeline 
 monitoring  that reduced system downtime and issue  resolution time. 
 Sustainico  Full Stack Intern   May 2025 – June 2025 
 ▪   Developed a  data pipeline  transmitting physical water-meter  readings to Amazon DynamoDB via  webhooks  . 
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 Automated  the   deployment   lifecycle   with   a   GitHub   Actions   CI/CD  pipeline  ,  reducing  manual  deployment  time  from 
 over 30 minutes to under 2 minutes and  eliminating  configuration errors. 
 PROJECTS 
 OAuth Implementation   LiveLink   Code 
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 Implemented   OAuth  2.0   with   PKCE   for   both   Google   and  GitHub,  with  secure  cookie  management  to  prevent  CSRF 
 attacks, writing all logic from scratch without relying on third-party libraries. 
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 Fortified   Google   OIDC   flow   against   replay   attacks   and   token   forgery   by   implementing   comprehensive   ID   Token 
 validation, including signature verification against cached  JWKS  and validation of iss, aud, exp, and  nonce claims. 
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 Engineered  a  high-throughput  Sliding  Window  Counter  Rate  Limiter,  using  Redis  and  a  custom  Lua  script  to  minimise 
 network overhead  . 
 Zero-knowledge, real-time chat app with multi-device E2EE protocol.   LiveLink   Code 
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 Built   a   multi-device   chat   application   featuring   an   end-to-end   encryption   protocol   from   scratch,   using   X25519   for 
 side-channel resistant  key exchange and  AES-256-GCM  to guarantee message  integrity  . 
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 Hardened  client-side  security  by  generating  non-exportable  Crypto  Key  objects  via  the  Web  Crypto  API,  preventing  key 
 exfiltration from XSS attacks and securely persisting them in IndexedDB. 
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 Engineered  a  highly  performant  chat  UI  capable  of  handling  10,000+  messages  by  implementing  UI  virtualisation  and 
 cursor-based  pagination  , achieving a constant-time,  memory-efficient rendering experience. 
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 Designed   a   secure  multi-device  synchronisation  model  with  explicit  device  verification  via  Safety  Numbers  to  protect 
 against Man-in-the-Middle (  MITM  ) attacks. 
 Real-Time Video Broadcaster   Code 
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 Architected  a  real-time  media  server  using  a  Mediasoup  SFU  to  efficiently  route  multiple  WebRTC  streams,  transcoding 
 them into a standard  HLS  live feed for scalable,  large-scale  audience distribution  . 
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 Engineered   a   dynamic   FFmpeg   process   manager   that   consumes   RTP   streams   from   Mediasoup,   compositing   video 
 (  hstack  ) and mixing audio (  amix  ) in real-time to generate  a  single,  broadcast-ready stream. 
 ▪   Developed a WebSocket  signalling server  to manage the complete WebRTC  connection lifecycle  . 