SOLDER
SOLDIERS

Engineering. Simulation. Electronics. Reliability.

Solder Soldiers is a multidisciplinary engineering team working on technical challenges, engineering competitions and research — from mechanical design and simulation to testing and reliability.

01 / How we work

From model to measurement

Five steps that every project runs through, from the first CAD sketch to a result we can stand behind.

01 / 05

WE DESIGN.

CAD, mechanical components and technical drawings.

CAD, mechanical components and technical drawings.

02 / 05

WE SIMULATE.

Structural and thermal-mechanical analysis.

Structural and thermal-mechanical analysis.

03 / 05

WE TEST.

Custom test jigs and laboratory measurement.

Custom test jigs and laboratory measurement.

04 / 05

WE VALIDATE.

Correlation between prediction and measurement.

Correlation between prediction and measurement.

05 / 05

WE COMPETE.

Competitions and technical conferences.

Competitions and technical conferences.
02 / Capabilities

What We Do

Engineering disciplines we work in. Skills are demonstrated through projects, not percentages.

MD

Mechanical Design

Component and assembly design driven by function, loads and manufacturability.

MAT

Material Characterization

Experimental and analytical characterization of engineering materials to determine the mechanical, thermal and physical properties required for accurate simulation, design and reliability assessment.

STR

Structural Analysis

Load paths, stiffness and failure modes assessed analytically and numerically.

REL

Reliability Engineering

Lifetime and failure-mechanism assessment instead of single-point verification.

TM

Thermal-Mechanical Analysis

Coupled thermal and mechanical response under cycling and transient loads.

CAD

CAD & Technical Drawings

Parametric 3D models and drawings prepared to engineering documentation standards.

JIG

Custom Testing Jigs

Design and fabrication of custom test fixtures and experimental setups tailored to specific mechanical, thermal and reliability testing requirements.

TST

Testing & Validation

Measurement campaigns that confirm — or correct — what the models predicted.

RES

Engineering Research

Literature-grounded studies prepared for conferences and technical review.

03 / Selected work

Projects & Competitions

Competition entries, conference research and ongoing work, newest first.

In Progress

Ongoing

Design, Implementation and Reliability Validation of New Heterogeneous Integration Structures for ASSET-IXC

National University of Science and Technology POLITEHNICA Bucharest

Research focused on the design, implementation and reliability validation of new heterogeneous integration structures developed within the ASSET-IXC framework, with emphasis on advanced microelectronic integration and dependable electronic assemblies.

ResearchMicroelectronicsReliability Engineering
Ongoing

Advanced Microelectronics Technologies for Sensor and Actuator Development for ASSET-IXC

National University of Science and Technology POLITEHNICA Bucharest

Research into advanced microelectronics technologies supporting the development and integration of sensors and actuators for the ASSET-IXC platform, with emphasis on reliable fabrication, integration and functional implementation.

ResearchMicroelectronicsMaterial Characterization

2026

2026To Be Confirmed

EPTC 2026

Engineering research prepared for presentation at EPTC 2026, focused on simulation and reliability topics related to advanced electronic packaging and interconnect technologies.

ResearchReliability EngineeringMicroelectronics
2026Completed

IEEE ESTC 2026

Thermal-mechanical modelling and reliability assessment of solder interconnects, investigating fatigue behaviour and assembly lifetime under representative loading and temperature conditions.

1st Place & 2nd Place

Thermal-Mechanical AnalysisReliability EngineeringMicroelectronics
2026Completed

TIE-M Plus 2026

Engineering competition project covering mechanical design, engineering analysis and technical presentation, developed and delivered under competition requirements.

1st Place & 2nd Place

Mechanical DesignStructural AnalysisTesting & Validation

2025

2025Completed

TIE-M Plus 2025

First-place engineering competition project combining mechanical design, engineering analysis and technical problem-solving, developed and presented as a complete solution under competition requirements.

1st Place

Mechanical DesignStructural Analysis
04 / The team

Meet the Team

Solder Soldiers combines mechanical, structural, simulation, electronics and reliability engineering.

Dragoș APOSTOL

Dragoș APOSTOL

Mentor & Team Coordinator

Doctor of Engineering at the National University of Science and Technology POLITEHNICA Bucharest, Department of Strength of Materials. Coordinates the team across every engineering discipline it works in, from design and simulation through to testing and reliability.

dragos.apostol@upb.ro
Mihai COSTEA

Mihai COSTEA

PhD Student in Mechanical Engineering

Teaching assistant in the Department of Strength of Materials at the National University of Science and Technology POLITEHNICA Bucharest. First place at TIE-M Plus 2025 and finalist at IEEE ESTC 2026. Contributes to both ongoing ASSET-IXC research projects on heterogeneous integration and advanced microelectronics technologies.

mihai.costea2210@upb.ro
Vlad NIȚOIU

Vlad NIȚOIU

Mechanical Engineer, Master's Student

Driven by finite element modelling and a long-standing fascination with rocketry — the kind of structures where analysis has to be right the first time. Second place at TIE-M Plus 2026, finalist at IEEE ESTC 2026 and preparing for EPTC 2026, alongside both ongoing ASSET-IXC research projects.

vlad.nitoiu@upb.ro
Andreea ANDREI

Andreea ANDREI

Automotive Engineer, Master's Student

Approaches engineering with strong research instincts and an appetite for picking up new skills wherever a project demands them. Finalist at IEEE ESTC 2026 and active on both ongoing ASSET-IXC research projects.

andreea.andrei1711@upb.ro
Darius LICIU

Darius LICIU

Mechanical Engineer, Master's Student

Studies at the Politehnica University of Timișoara, working from a strong finite element background and a broad enough engineering toolkit to weigh trade-offs and commit to a decision. First place at TIE-M Plus 2026, finalist at IEEE ESTC 2026 and part of the team for EPTC 2026.

dariusliciu@yahoo.com

New members soon

Melania MUNTEANU

Melania MUNTEANU

Bachelor Student, Industrial Engineering

Drawn to CAD and hands-on testing, and quick to pick up whatever a project asks for next. Contributes to both ongoing ASSET-IXC research projects and is preparing for EPTC 2026.

melania.munteanu@upb.ro
Solder Soldiers

Let's build something that works.

Explore our engineering work, research and competition projects, or meet the people behind Solder Soldiers.