SOLO ENGINEER — SHIPS & OPERATES PRODUCTION SYSTEMS

Rakesh Kumar

Founder of InterviewEra. I build the whole stack — schema to prompt pipeline to deploy — and keep it running in production, solo.

150+
users
300+
interviews run
75K
lines shipped
600+
contributions
rakesh — zsh
$ whoami
founder & lead engineer, interviewera
Illustration of a developer at a multi-monitor setup
$ stack --list
next.js 16 · postgres · supabase · openai · redis
$
→ open the full terminal
02 / about

What I actually do

I ship and operate production systems end to end — database schema, backend services, LLM prompt pipelines, frontend, deploy, monitoring. No handoffs; I own the whole path from idea to a user hitting it in production.

Most recently that's InterviewEra: an AI mock-interview platform running real technical and behavioral sessions, built and operated solo.

Before reaching production, I worked through a fair number of smaller projects and experiments — everything from DSA-focused builds to full-stack apps — which is where I actually learned what separates a production-grade system from a working prototype.

700+ leetcode problems solved
03 / flagship

InterviewEra

AI mock-interview platform running real technical & behavioral sessions with adaptive follow-ups, grading, and instant feedback.

755
clicks
250+
indexed pages
11.5K+
impressions
[ PROBLEM ]

Static prep material can't simulate the adaptive pressure of a live technical interview — no real-time follow-ups, no objective scoring.

[ SOLUTION ]

An autonomous interviewer that runs tailored technical & behavioral sessions with dynamic follow-ups, live grading, and instant feedback.

Free tools & community

FREE TOOL

ATS Check

Scores a resume against a target job description for ATS match quality.

try it →
FREE TOOL

Question Generator

Generates role- and resume-specific interview questions to practice against.

try it →
FREE TOOL

STAR Method Answer Generator

Turns a rough experience into a structured Situation–Task–Action–Result answer.

try it →
RUN COMMUNITY

A community around the platform sharing preparation resources and surfacing placement opportunities for members.

join community →

System architecture

Next.js 16 Client
API Handler — Auth & Session Control
Redis — session cache
Supabase — Postgres
OpenAI — adaptive prompts
Candidate Dashboard — ATS + feedback
ENGINEERING DECISION — SCORING FAIRNESS

Placeholder — exact decision writeup pending content plan. Scoring runs against a fixed rubric per question type rather than free-form LLM judgment, so two candidates giving equivalent answers get equivalent scores regardless of phrasing or model non-determinism.

tech stack
Next.js 16TypeScriptNode.jsExpressPostgreSQLSupabaseRedisOpenAI APIVercel
bugs fixed / challenges
fix: adaptive pacing drifted off-topic → state histories in Postgres
fix: token latency on follow-ups → Redis cache, ~30% faster round-trip
04 / projects

Secondary projects

Trash2Tech — E-Waste Traceability

Compliance-grade e-waste collection & traceability platform for India — pickups, lot management, recycler intake, audit trails, and EPR reporting across citizens, hubs, field captains, recyclers, and brands.

live app →
NestJSTypeORMPostgreSQLRedisNext.js 14ZustandJWT Auth
Trash2Tech e-waste traceability platform preview

SkillBridge AI

AI-powered career roadmap generator — maps a candidate's current skills against a target job description and builds a structured path of modules and quizzes.

live app →
Next.js 16TypeScriptPrismaSupabaseNextAuth.jsOpenRouter APIVercel AI SDK
SkillBridge AI career roadmap preview
1ST PLACE — TECH-PRAGATI HACKATHON

Placed AI

Full-stack AI placement assistant built in a 24-hour hackathon — resume parsing, job matchmaking, and AI mock-interview feedback across 10+ modules.

live app →
ReactNode.jsExpressMongoDBFastAPIGemini AITensorFlow
Placed AI placement assistant preview
05 / timeline

Experience & education

2023–24
work

Full-Stack Developer

Digi Soul Tech Pvt. Ltd. · Ranchi

Built and shipped REST APIs integrating 5+ third-party services in production. Optimized MongoDB queries for a 30% cut in processing time and closed security gaps, cutting vulnerabilities by 40%.

exp. 2025
education

Minor in Computer Science Engineering

IIT Mandi · CGPA 8.3/10

Data structures & algorithms, operating systems, distributed architectures, and applied ML.

exp. 2026
education

Master of Computer Applications

Sarala Birla University · CGPA 7.49/10

Software development, database systems, and modern web technologies.

06 / hackathons

Hackathons

2ND RUNNER-UP — INNOVATE-A-THON 3.0

Team Airavat

BIT Mesra, Ranchi · Aug 29–31, 2025

2nd runner-up among 50+ teams with a blockchain-based healthcare solution for real-time patient data ownership and validation.

BlockchainWeb3Node.jsExpressHealthTech
Innovate-A-Thon 3.0 participant badges — Team AiravatTeam Airavat working the buildOn stage — 2nd runner-upTeam photo, BIT Mesra
07 / signature

Query the system directly

A real command line — not a canned animation. Ask it about the stack, the metrics, the projects, or the decisions behind them.

08 / contact

Let's talk shop.

Open to full-stack / AI engineering roles and founder conversations. Fastest way to reach me is email.