Senior Backend Engineering & Distributed Systems Architecture

Specialized in high-scale Java/Spring Boot microservices, Kafka event-driven architectures, and resilient cloud infrastructure. Trusted by Deutsche Bank, Deloitte, and deep-tech pioneers for mission-critical systems that cannot fail.

10+ YearsSenior Backend & Architecture
Java โ€ข KafkaSpring Boot, Cloud & Microservices
Deutsche BankExaCC Enterprise Automation
5x 1st PrizeTech Hackathons & Cybernetics
โšก Architecture & Mastery

Our Core Engineering Disciplines

Rare versatility: we architect resilient distributed backends, write embedded C++ firmware, and deploy real-time media platforms.

Primary Specialization

High-Scale Backend Development & Architecture

Java (8-20), Spring Boot, Python, Kafka, and event-driven microservices. From orchestrating 100+ complex steps for database migrations at Deutsche Bank to cloud-native messaging at Spirent and retail scale at Deloitte.

  • Microservices & Event Streaming (Kafka, Redis, WebSockets, gRPC)
  • Multi-Cloud Deployments (AWS EKS, OCI, GCP, OpenShift, Kubernetes)
  • Ansible Playbook Orchestration & Automated CI/CD Pipelines
Proprietary 2026 Venture

Real-Time Interactive Platforms & Digital Signage

Creators of Bafta Media Network & Bafta Frate! โ€” enabling venues to broadcast real-time promo content on TV screens directly from their phones, combined with curated educational and entertainment content. Built on Android TV, Node.js, WebSockets, PostgreSQL, React, and Astro.

  • Real-time phone-to-TV content control via WebSockets
  • Curated educational & entertainment streams for guests & clinics
  • Android TV Kiosk mode with robust PostgreSQL & Node.js backend
DeepTech & Hardware

Hardware Prototyping, Embedded & Robotics

From custom PCB schematics to embedded C/C++ firmware, MQTT, and mass manufacturing. Proven through 5 hardware iterations of ClarK AR Smart Glasses and satellite Hall Effect thruster software for ESA.

  • Turnkey PCB Design, Raspberry Pi to custom board evolution
  • Embedded C/C++, FreeRTOS, ARM Cortex, I2C, BLE & WebRTC
  • Industrial AR Wearables, Thermal Vision & Computer Vision
Full Product Ownership

Full-Cycle Modern Digital Products

Taking total ownership from initial architecture to production release. We ship lightning-fast web applications, high-converting platforms, and scalable data architectures with zero technical debt.

  • Modern Web Architecture (TypeScript, Astro, Next.js, React)
  • High-throughput data ingestion, chat & real-time trading engines
  • Rigorous SDLC, automated testing, Prometheus & Grafana observability
๐Ÿ† Proven Proof of Work

Ventures & Selected Engagements

A decade of hands-on impact spanning tier-1 global banking, space exploration, venture-backed tech startups, and our own proprietary media products.

Baftฤƒ Frate! (The Party Game) official logo

Baftฤƒ Frate! (The Party Game)

2026 In-House
2026 In-House Venture โ€ข Interactive TV Party Game

The Romanian Jackbox-style party game platform where players use their smartphones as controllers while the game is hosted on a main TV or PC screen. Features localized Trivia, Logo Trivia, Fibbage (social deception), and Doodle Guess. Validated with over 2,500 unique sessions on launch weekend, 408 matches, an 88.2% completion retention rate, and featured on ProTV iLikeIT.

Jackbox StyleMobile ControllersTrivia & FibbageProTV iLikeITReal-Time WebSocketsReact / Node.js
2,500+ launch users โ€ข 88.2% completion โ€ข ProTV iLikeIT
Visit Live Platformโ†’
Bafta Media Network (Digital Signage) official logo

Bafta Media Network (Digital Signage)

2026 In-House
2026 In-House Venture โ€ข Real-Time Digital Signage & TV Media

Smart digital signage platform empowering venues (restaurants, pubs, bars, clinics) to publish and manage promotional content on their screens in real time directly from their smartphones, alongside curated educational and entertainment streams managed by our network. Architected with Android TV Kiosks, Node.js backend, real-time WebSockets, PostgreSQL, React, and Astro.

Real-Time Phone CMSAndroid TV KioskWebSocketsNode.js & PostgresReact / AstroHoReCa & Clinics
Real-time phone control โ€ข Curated entertainment โ€ข Android & WebSockets
Visit Live Platformโ†’
Deutsche Bank official logo

Deutsche Bank

02/2024 โ€“ 02/2026 โ€ข Senior Software Developer (Contract)

Engineered a smart automation system using Java 20, Spring Boot, and Python that dynamically orchestrates Ansible playbooks across 100+ complex steps for large-scale ExaCC database manipulations and migrations. Designed automated certification pipelines utilizing Python, Jenkins, and Automic, streamlining database patching on Oracle Cloud Infrastructure (OCI) and OpenShift. Required regular monthly on-site travel to Frankfurt, Germany.

Java 20Spring BootPythonAnsible 100+ StepsOracle Cloud (OCI)OpenShiftFrankfurt On-Site
Automated 100+ step migrations โ€ข Monthly travel to Frankfurt, Germany
View on LinkedInโ†’
Yarta official logo

Yarta

11/2021 โ€“ 05/2022 โ€ข Java Technical Lead (Contract)

Architected and delivered backend microservices for a private grain commodities market and livestock order tracking system (Java, Spring Boot, PostgreSQL, Twilio). Built real-time chat and trading microservices from scratch using Node.js, Socket.io, Kafka, and MongoDB on AWS (EKS, RDS, CloudFront).

Java Tech LeadCommodity TradingKafka & WebSocketsAWS EKSPostgreSQLMongoDB
Real-time trading & end-to-end livestock lifecycle tracking
View on LinkedInโ†’
Deloitte Digital | UK Retail Tier-1 official logo

Deloitte Digital | UK Retail Tier-1

01/2021 โ€“ 12/2021 โ€ข Senior Java Developer

Maintained and scaled 10+ core microservices for a massive UK retailer using Java, Kotlin, and Spring Boot. Orchestrated resilient microservices on Google Cloud Platform (GCP) and Kubernetes, leveraging Google Pub/Sub, Prometheus, and Grafana for monthly seamless release cycles.

Java & KotlinSpring BootGCP & KubernetesGoogle Pub/SubPrometheus & Grafana
Mission-critical retail scalability & monthly release cycles
ClarK Vision official logo

ClarK Vision

01/2018 โ€“ 03/2021 โ€ข Co-founder & Tech Lead

Co-founded an Industry 4.0 augmented reality startup, leading a team of 5 developers to build the complete product ecosystem through 5 hardware generations: from early Raspberry Pi prototypes to custom PCBs and native Android smart glasses with thermal vision, continuous QR scanning, MQTT, WebRTC, I2C, and scalable AWS cloud backend.

Co-founder & Tech LeadCustom PCB PrototypingNative Android ARMQTT & WebRTCThermal VisionAWS Cloud
5 hardware generations built from scratch to industrial production
View on LinkedInโ†’
IDEMIA (Ausy | IDEMIA) official logo

IDEMIA (Ausy | IDEMIA)

12/2018 โ€“ 12/2020 โ€ข Mid Java Developer (Biometrics & Forensics)

Engineered and deployed critical software updates and customizations for biometric security products utilized directly by international police departments in advanced forensics flows. Customized and scaled enterprise Java and JBoss applications for IDEMIA, collaborating with cross-functional teams across France, the Netherlands, Romania, and Serbia. Authored advanced utility tools, custom log parsers, and reporting pipelines for high-stakes production environments.

Biometric SecurityInternational Police ForensicsJava EnterpriseJBossLog ObservabilityHigh-Stakes Production
High-stakes biometric forensics for international police forces
European Space Agency | Thales Alenia official logo

European Space Agency | Thales Alenia

11/2017 โ€“ 12/2018 โ€ข C++ Software Engineer (Aerospace Core)

Developed mission-critical C++ modules for satellite propulsion, command core, and Hall Effect thrusters for the European Space Agency (NEOSAT project). Built comprehensive unit testing frameworks and aerospace orbital simulation tooling utilizing Python.

C++European Space Agency (ESA)Thales AleniaNEOSATHall Effect ThrustersPython Simulations
Mission-critical propulsion software for European Space Agency
Costin Valeriu Costea

Costin Valeriu Costea

Senior Backend Engineer | Lead Software Architect | Founder

๐ŸŽ“ Cybernetics ASE (9.83/10)
๐Ÿ›ก๏ธ Founder & Principal Engineer

Senior Backend Engineer & Lead Software Architect with 10+ Years Building Resilient Distributed Systems

A true builder at heart with over a decade of deep engineering experience. Graduated in Cybernetics - Economic Informatics at Bucharest Academy of Economic Studies (Grade 9.83/10, Thesis: OLinda facial recognition smart mirror). Costin combines extreme backend depth with total architectural ownership: from satellite propulsion modules for the European Space Agency (NEOSAT) and ExaCC database migration systems at Deutsche Bank, to co-founding 5 generations of ClarK AR smart glasses and launching the Bafta Media Network in 2026.

โœ“Extreme backend depth: expert in JVM internals, distributed state, concurrency, and event-driven architecture.
โœ“Zero junior delegation: direct senior involvement in system design, core logic, and production deployment.
โœ“High engineering rigor: battle-tested under banking compliance, satellite mission constraints, and high throughput.

โšก Core Backend & Distributed Systems Competencies

LanguagesJava (8-20), Kotlin, Python, C++
ArchitectureMicroservices, Event-Driven, High Concurrency, Clean Code
Streaming & MessagingKafka, WebSockets, Socket.io, RabbitMQ, gRPC
FrameworksSpring Boot, Quarkus, Node.js, Express
Cloud & DevOpsAWS (EKS, RDS), GCP, OCI, Kubernetes, Docker, OpenShift, Ansible
Databases & CachePostgreSQL, Redis, MongoDB, Oracle ExaCC
๐Ÿ…

Top Technical Awards & Hackathons (1st Place Selection)

#11st Prize โ€” Kaufland Accessibility Hackathon (2020)
#11st Prize โ€” Be An Innovator Competition by BearingPoint (2017)
#1Winner โ€” Start-up of the Year, Innovation Labs (2017)
#11st Prize โ€” HackITAll Hackathon (2016)
#11st Prize โ€” Hacking for Humanity Hackathon (2016)
๐ŸŒฑ Social Impact & Next-Gen

Empowering Future Creators: ZETA Camp

We believe technology must serve as a catalyst for future generations. As a proud core partner of ZETA Camp, Raisedfortech actively mentors youth in robotics, programming, and nature exploration, inspiring the tech leaders of tomorrow.

ZETA Camp Logo
๐Ÿ“ซ Initiate Collaboration

Let's Build Something Exceptional

Whether you need senior backend engineering for an enterprise system, an architecture audit, or a lead engineer for high-concurrency platforms, we are ready.

Direct Engineering Line

Costin Valeriu Costea

Technical Lead & Founder. Available for architecture advisory, venture development, or engineering contracts.

Bucharest, Romania (EU) โ€” Open to Global Remote / Hybrid
Priority Discovery

Schedule a 15-Min Intro

Discuss architecture, technical scope, or team augmentation directly with our engineering leadership.

Request Calendar Slot โ†’