Backend Developer Jobs in Seoul

Backend Developer jobs in Seoul hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $161,682/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.

Seoul
AI/ML
Software
Data
Security
DevOps & Cloud
Leadership
Product
Design
Fintech
Hardware & Chips
Defense
Aerospace
Biotech
Energy
Robotics
Automotive
MedTech
Science

Colosseum

colosseum.global
colosseum.global • HQ: Seoul, South Korea • Logistics • Trust A • Hiring 12
HQ: Seoul, South Korea • Logistics • Trust A • Hiring 12
Colosseum is a Korean logistics technology company that handles fulfilment for its clients from initial consulting to receiving, inventory, delivery and settlement. It runs a network of 53 logistics centres, including six in the United States, through its integrated logistics platform COLO, and hires business development, e-commerce sales, CRM and B2B marketing managers. The company is headquartered in Seoul, South Korea.
Jinsu Park · 대표이사 · decision-maker
No careers mailbox known
Open 327 daysVerified live · 3 hours ago 10 months ago Long shot · 6%

[P&E] Backend Engineer(5년 이상)

≈ $58k – $174k per year (Estimated) • Senior • 5+ years exp • In office (Seoul, South Korea) • Full-Time • Senior • Korean: C1
Kotlin
Java
Java
Gradle
Querydsl
Spring Boot
Databases
MySQL
DevOps
Datadog
Amazon ECS
GitHub Actions
Jenkins
Rest API
Git
Docker
AWS
Management
Confluence
+7
Apply

Allosta

allosta.co.kr
allosta.co.kr • HQ: Seoul, South Korea • Digital Mental Health • Wellness Programs • Hiring 4
HQ: Seoul, South Korea • Digital Mental Health • Wellness Programs • Hiring 4
Allosta is a South Korean wellness technology company that uses bio-analysis and AI to link personal diet, nutrition, sleep, exercise and health management. It develops B2B business models and partnerships in healthcare and hires strategy and business development staff, full stack developers, content marketers, recruiters and brand designers. The company is headquartered in Seoul, South Korea, in the Magok area of Gangseo.
No named decision-maker yet.
Careers mailbox is known
Open 351 daysVerified live · 2 hours ago 11 months ago Long shot · 3%

풀스택 개발자

Junior • 2+ years exp • In office (Seoul, South Korea) • Full-Time • Junior • Korean: C1
Node JS
JavaScript
Python
Python
FastAPI
Node JS
Nest.JS
Frontend
React.js
Mobile
React Native
DevOps
Docker
Apply

BLUEDOT

blue-dot.io
blue-dot.io • HQ: Seoul, South Korea • Streaming & OTT Platforms • Generative Video • 51-200 employees • Startup • Hiring 4
HQ: Seoul, South Korea • Streaming & OTT Platforms • Generative Video • 51-200 employees • Startup • Hiring 4
BLUEDOT delivers AI-driven video processing, encoding optimization, and immersive visual experiences through Silicon IP and software.
No named decision-maker yet.
Careers mailbox is known
Open 388 daysVerified live · 2 hours ago 1 year ago Long shot · 5%

[경력] 코덱 소프트웨어 엔지니어

In office (Seoul, South Korea) • Full-Time • Korean: C1
C++
Python
Apply

Channel Corp

channel.io
channel.io • HQ: Seoul, South Korea • Conversational AI • Customer Support & Help Desk Software • 51-200 employees • Est. 2014 • Trust B • Hiring 58
HQ: Seoul, South Korea • Conversational AI • Customer Support & Help Desk Software • 51-200 employees • Est. 2014 • Trust B • Hiring 58
Channel Corp is a Seoul software company that develops Channel Talk, an AI messenger platform for customer support, sales and customer operations, and Channel Works, a business suite for analytics, marketing and team collaboration. Formerly known as ZOYI, it has built its business mainly among Korean and Japanese startups and small and midsize businesses, reports use by around 240,000 companies and is expanding in the US, starting with AI-native startups in San Francisco. It hires software, DevOps and applied AI engineers, product managers and designers, account executives, sales development and account management staff, customer success specialists and recruiters.
No named decision-maker yet.
No careers mailbox known
Likely inactiveVerified live · 22 min ago 1 year ago Long shot · 8%

Software Engineer, Senior

≈ $61k – $182k per year (Estimated) • Senior • Hybrid (Seoul, South Korea) • Senior • Korean: C1
Go
Node JS
Java
Python
JavaScript
DevOps
Amazon EKS
AWS Lambda
Amazon ECS
Docker
Kubernetes
AWS
+3
Apply
Likely inactiveVerified live · 22 min ago 2 years ago Long shot · 5%

Software Engineer

Hybrid (Seoul, South Korea) • Korean: C1
Swift
Kotlin
Go
TypeScript
Java
Java
Spring Boot
Kotlin
Hilt
Kotlin Coroutines
Databases
Apache Kafka
AI/ML
OpenAI Codex
GPT-5
Claude Code
Mobile
UIKit
SwiftUI
Combine
DevOps
WebRTC
WebSockets
Rest API
Kubernetes
AWS
+12
Apply

MarqVision

marqvision.com
marqvision.com • HQ: West Hollywood, United States • Brand Protection & Anti-Counterfeiting • Legal AI • Computer Vision • 11-50 employees • Est. 2019 • Startup • Trust B • Hiring 11, 1 new
HQ: West Hollywood, United States • Brand Protection & Anti-Counterfeiting • Legal AI • Computer Vision • 11-50 employees • Est. 2019 • Startup • Trust B • Hiring 11, 1 new
MarqVision is a technology company that offers brand protection and intellectual property enforcement services using artificial intelligence. It provides a platform that helps rights holders monitor online channels and take action against counterfeits and unauthorized use of their brands.
Insup Lee · Executive Officer, Director · decision-maker
No careers mailbox known
Likely inactiveVerified live · 3 hours ago 1 year ago Long shot · 6%

Software Engineer, Backend

In office (Seoul, South Korea) • Full-Time
Kotlin
Python
Kotlin
Ktor
Exposed
Databases
ElasticSearch
OpenSearch
Redis
PostgreSQL
AI/ML
Grok
Gemini
ChatGPT
LLM
DevOps
AWS
gRPC
GitHub
+7
Apply

Moreh

moreh.io
moreh.io • HQ: Seoul, South Korea • AI Chips & Accelerators • AI Compute & Inference • 51-200 employees • Est. 2020 • Startup • Trust B • Hiring 8
HQ: Seoul, South Korea • AI Chips & Accelerators • AI Compute & Inference • 51-200 employees • Est. 2020 • Startup • Trust B • Hiring 8
Moreh is a South Korean company founded in 2020 that builds a software platform for training and serving large models on non-Nvidia accelerators. Its compiler and cluster runtime let PyTorch workloads run across large fleets of AMD and domestic chips without code changes. The company has demonstrated large language model training on such clusters with Korean cloud and telecom partners.
Jihyo Lee · Executive Officer, Director · decision-maker
Gangwon Jo · Executive Officer, Director · decision-maker
Jong Taek Won · Executive Officer, Director · decision-maker
Wookeun Jung · Director
Careers mailbox is known
Open 514 daysVerified live · 2 hours ago 1 year ago Long shot · 8%

NPU Software Engineer

Seoul • Remote (South Korea) • Full-Time • Korean: C1
C++
Python
C++
TensorFlow C++
AI/ML
NCCL
TensorFlow
PyTorch
DevOps
HPC
Apply

Applied Intuition

appliedintuition.com
appliedintuition.com • HQ: Sunnyvale, United States • Defense AI • Automotive Software • Simulation & Digital Twin Software • Autonomous Driving • 1001-5000 employees • Est. 2017 • Trust B • Hiring 290, 5 new
HQ: Sunnyvale, United States • Defense AI • Automotive Software • Simulation & Digital Twin Software • Autonomous Driving • 1001-5000 employees • Est. 2017 • Trust B • Hiring 290, 5 new
Applied Intuition is an American vehicle software company founded in 2017 that sells the toolchain automakers use to develop, simulate and validate autonomous and assisted driving systems. Its products cover large-scale simulation, sensor modelling, drive-data management, scenario generation and a vehicle operating system, sold to carmakers, truck, agricultural and construction equipment manufacturers and defence customers, and it has expanded into defence autonomy through acquisitions. The company is headquartered in Sunnyvale, California, United States.
Peter Ludwig · Co-founder and Chief Technology Officer · decision-maker
Qasar Younis · Co-founder and Chief Executive Officer · decision-maker
Careers mailbox is known
Likely inactiveVerified live · 1 hour ago 1 year ago Long shot · 7%

Software Engineer - Defense Tooling

≈ $79k – $237k per year (Estimated) • Equity • Senior • 5+ years exp • In office (Seoul, South Korea) • Bachelor's Degree • Full-Time • Senior • English: B2 • Korean (Optional)
C++
Python
AI/ML
Reinforcement Learning
Physical AI
Computer Vision
DevOps
CI/CD
Robotics
Reinforcement Learning
Path Planning
SpaceTech
ANSYS
+1
Apply

Featuring

featuring.in
featuring.in • HQ: Seoul, South Korea • Marketing & Sales AI • Influencer Marketing • Trust C • Hiring 11
HQ: Seoul, South Korea • Marketing & Sales AI • Influencer Marketing • Trust C • Hiring 11
Featuring is a Korean influencer marketing company that uses its AI engine to analyse social media data, from finding influencers to measuring campaign results. It runs influencer campaigns for businesses, has a Japanese subsidiary, and hires AI, LLMOps and backend engineers as well as customer success managers. The company is headquartered in Seoul, South Korea.
No named decision-maker yet.
No careers mailbox known
Likely inactiveVerified live · 3 hours ago 1 year ago Long shot · 3%

[프로덕트] 백엔드 엔지니어

Seoul • Remote (South Korea) • Full-Time • Korean: C1
Python
Python
FastAPI
Django
DevOps
Git
Analytics
ETL/ELT
Design
Figma
Apply

PortOne Korea

portone.io
portone.io • HQ: Seoul, South Korea • Payment Processing & Gateways • Est. 2015 • Trust B • Hiring 6
HQ: Seoul, South Korea • Payment Processing & Gateways • Est. 2015 • Trust B • Hiring 6
PortOne Korea is a South Korean fintech company that builds AI-driven financial infrastructure covering payments, partner settlement and tax. Its Finance OS connects dozens of domestic and international payment gateways through a single API and automates settlement and month-end closing for about 3,000 client businesses, and it hires product owners, forward deployed engineers and AI agent engineers. The company is headquartered in Seoul, South Korea.
No named decision-maker yet.
Careers mailbox is known
Open 876 daysVerified live · 3 hours ago 2 years ago Long shot · 6%

백엔드개발자 Backend Engineer(5년이상)

≈ $60k – $180k per year (Estimated) • Senior • 5+ years exp • In office (Seoul, South Korea) • Full-Time • Senior • Korean: C1
Scala
Go
TypeScript
Databases
OpenSearch
MySQL
Apache Kafka
PostgreSQL
DevOps
gRPC
Rest API
Kubernetes
AWS
+3
Apply
Machines can read this selection · checked 13:49 UTC
Backend Developer Jobs in Seoul
Frequently asked questions
How many Backend Developer jobs in Seoul are available on Alion?
There are currently 103 active listings from 41 hiring companies on Alion, refreshed daily.
What salary do Backend Developer jobs in Seoul pay?
The average salary is around $161,682 per year based on the current listings.
Are remote options available for Backend Developer jobs in Seoul?
Yes, many of these roles offer remote or hybrid work, and you can filter listings by remote, relocation and visa sponsorship.
How do I apply for Backend Developer jobs in Seoul?
Open any listing on Alion and apply directly with the employer through the provided link - no lengthy sign-up required.