— ABOUT
Twenty years
building software
for real businesses.
↓ TRACK RECORD
I am Alexandre Fernandes, a software engineer with over two decades developing and integrating systems. From my first internship in call centers (LVK) to mission-critical backend at Mercado Livre, I have worked across cooperatives, banks, biometrics and ran my own studio for 8 years. Studio Atlas is the continuation of this trajectory: applying that depth to small and medium businesses.
20+
YEARS IN THE FIELD
10
COMPANIES · 1P / FINTECH / B2B
8
YEARS AS COFOUNDER
∞
SYSTEMS DELIVERED
— TRACK RECORD
Where I built.
2023 — NOW
Backend Java Engineer
MERCADO LIVRE · 1P
Profitability team for First Party operation — pricing systems with direct financial impact. Java/Spring Boot APIs with Clean Architecture and SOLID, distributed messaging (streams, key-value), observability and war-room duty.
2022 — 2023
C# Integrations Developer
SYSMIDDLE · iPaaS
iPaaS Connect#Us platform — integrations between legacy and modern systems for retail, industry and tech. Requirements gathering, technical design and production support.
2021 — 2022
Android Mobile Developer
FULLFACE · BIOMETRICS
Android apps with facial recognition, liveness detection and integration with SERPRO and Docusign. Pension, banks and transport. Camera handling, sockets, network broadcast.
2018 — 2021
Fullstack Developer
VP9 INFORMÁTICA
Internal process automation. Replaced manual controls with custom digital systems — forms, dashboards, management reports. Full cycle: requirements, design, code, deploy.
2018
Developer Analyst
BNP PARIBAS · BANK
Regulatory routine support for the Central Bank. SSIS, ASP.NET, Silverlight in compliance environment. Incident analysis, data integrity and on-time financial reporting.
2016 — 2017
B2B Mobile Developer
SPRING MOBILE
White-label sales-force app customization for major accounts: Vigor, Premier Pet, TIM, Unilever. Analysis, fixes, homologation, support and change requests.
2008 — 2016
Cofounder & Developer
PERSONALWARE · 8 YEARS
Entrepreneur for 8 years. FoundMe (smartphone tracking), iUP (sales-force tablets), TCP/IP vehicle tracking platform, on-demand ERP for distributor. Led prospecting, negotiation, deployment and support.
2005 — 2007
Developer & IT Lead
QUALIFY SAT
Built an ERP from scratch — admin, sales and finance modules. Coordinated intern, infrastructure and tech decisions. Central IT contact of the company.
2002 — 2005
Career start
LVK · GEEMPA · COOPERPAM
Technical internship in call centers (EDS, Visanet, Ticket, NET, Grupo Abril), GPS vehicle tracking via VB6 and TCP/IP, management systems for São Paulo public-transport cooperative — electronic ticketing.
— COMPETENCIES
What is in the bag.
01 · BACKEND
Java & Spring Boot
Clean Architecture, SOLID, design patterns, REST, asynchronous messaging in distributed systems.
02 · INTEGRATIONS
APIs & connectors
.NET, iPaaS, integrations between ERPs, marketplaces, gateways. TCP/IP with embedded hardware.
03 · MOBILE
Native Android
Kotlin and Java, facial biometrics, sockets, image processing, integration with government APIs.
04 · QUALITY
Testing & CI/CD
JUnit, RestAssured, Cucumber (BDD). Testing culture from RFC to production.
05 · DATA
SQL & observability
BigQuery, Looker Studio, MySQL, SQL Server, Postgres. Anomaly analysis and insights.
06 · BUSINESS
Product mindset
Translating business needs into technical solutions. Interaction with stakeholders, product and operations.
— CONTACT
Got a project?
Let us talk.
24-business-hour reply with a free initial proposal. Direct support with me, no middlemen.
or open a ticket via the form Open ticket →