00 — ABOUT

Our name is how we work

Bareunsem combines bareun (right) with sem, the native Korean word for computing. We count requirements precisely, build structures right, and verify results with numbers.

One team owns everything from analysis to operational handover. Because the engineers who design your cloud also understand your legacy systems, no data or business rule gets lost in the transition.

COMPANY
Bareunsem Co., Ltd. · 주식회사 바른셈
FOUNDED
March 24, 2020
CEO
Cho Yeonhaeng
LOCATION
Unit 906, Building B, 551-16 Dongtan-daero, Dongtan-gu, Hwaseong-si, Gyeonggi-do, Republic of Korea
D-U-N-S
695547157
FIELDS
System integration · Enterprise service development · AI-driven development · Database & cloud architecture

01 — SERVICES

What we do

We deliver six services individually or combine them into a single project.

01 — SYSTEM INTEGRATION

System integration

We connect scattered business systems into a single flow, owning everything from interface design to integration testing.

InterfacesEAIIntegration testing

02 — ENTERPRISE SERVICE

Enterprise service development

We build internal business systems and customer-facing services, from requirements analysis through development and deployment.

Web servicesAPIsBack office

03 — PROJECT DELIVERY

Project delivery

We manage the analysis, design, build and transition phases against agreed deliverables and schedules.

PMDeliverablesTransition

04 — CUSTOM APPLICATION

Custom applications

We design and build web and mobile applications that fit the way your business actually works.

WebiOSAndroid

05 — AI-DRIVEN DEVELOPMENT

AI-driven development

We apply LLMs to our engineering process and to your services, speeding up analysis, coding and verification.

LLMAutomationCode review

06 — DATA & CLOUD

Database & cloud architecture

We migrate legacy data to the cloud without loss and design architectures your team can run with confidence.

AWSDB migrationPerformance tuning

02 — PROCESS

Count, design, prove

Every phase leaves a deliverable, and the next phase starts only after the numbers from the previous one check out.

  1. 01 ANALYZE

    Analyze

    We inventory every table, interface and business rule in your current systems.

  2. 02 DESIGN

    Design

    We define the target architecture and migration criteria, and document them as design deliverables.

  3. 03 BUILD

    Build

    We build to the design and confirm behavior with unit and integration tests.

  4. 04 MIGRATE

    Migrate & verify

    We reconcile record counts and totals between source and target to prove the data moved correctly.

  5. 05 OPERATE

    Operate

    We monitor through the stabilization period, then hand over to your operations team.

03 — FOCUS

From AS/400 to AWS, without a break

The team that designs your cloud understands your legacy. We move decades of business data without loss, then confirm with numbers that it produces the same results after the move.

  1. SOURCE

    AS/400 (IBM i)

    We analyze DB2 for i data and RPG/COBOL business logic.

    DB2 for iRPG
  2. MAP · CONVERT · RECONCILE

    Migrate & verify

    We iterate on column mapping, code and character-set conversion, and count/total reconciliation until the data is consistent.

    Mapping specReconciliation report
  3. TARGET

    AWS

    We redesign onto managed databases and a scalable architecture, then hand it over to your operations team.

    RDSS3

We prove migrated data with numbers

For every migration run, we keep a reconciliation report comparing source and target counts and totals for each table. We don't move on until the difference is zero.

-- source/target reconciliation
SELECT COUNT(*), SUM(amount)
  FROM claims
 WHERE batch_id = :batch;

-- diff  rows 0   amount 0

04 — CONTACT

Start your next project
with the right numbers

Tell us about your current systems and goals, and we'll reply with a proposal outlining scope and schedule.

Contact us about a project