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I am a software developer with over 12 years of experience, working mostly as Java/Scala back-end, distributed systems engineer.
I graduated from Imperial College London in 2012 with First Class honours in Computing. During my studies I acquired an in-depth understanding of Object-Oriented programming, Data Structures, Algorithms and Software Design. For the past 12 years I have worked in the Investment Banking industry atMorgan Stanley as a back-end Java developer developing distributed, highly-scalable systems. I possess an in-depth knowledge of Java programming language and my expertise includes:
* Software systems and architecture design
* SiteReliability Engineering - building scalable, highly available systems
* Multi-threading/concurrency
* Performance optimisation
* Cloud migration/deployments
I have also been recently involved in training of AI models. As part of that role I am responsible for evaluating AI-generated responses to coding/reasoning questions, as well as generating and rating coding conversations with chat-bots in a classroom teaching style.
I am leading multiple technical teams at my current role and I have been mentoring developers since more than 6 years professionally. I have a passion in technology and product development. I would like to explore how I can contribute to Codementor and help mentor diverse audience.
Dynamic, self-motivated, highly qualified, fast learning and results oriented Engineering Leader/Architect with 10+ years of experience working on variety of software products and technologies. Track record of delivering quality products on time.
Specialties: Big Data Technologies, Analytics, Ad Exchanges, Ad Mediation, Data Mining, Machine Learning, Hadoop, AWS, distributed computing, infrastructure design & development .
Contributor for book "Machine Learning Engineering" by Andriy Burkov.
Problem Solver,Regular coder , Mentor and a Self taught develor Having Extensive experience in DSA , Java , Spring Boot Micoservices and BIg Data Technologies like Spark,GCP, Cassandra,Kafka,Bq , Apache Hadoop etc. I have been working as DSA and Java Trainer for last 2 years and have trained more than 1000 students and professionals.
Learning and Teaching is my passion so I offer discount rate for students and long term tutoring.
Superb C++, Haskell, Scala, FP, and OO design chops.
Expert at designing compilers, type systems, frameworks, and embedded programming languages.
Strong background in pure mathematics, computer science, functional programming, and category theory.
# 👋 Hi, I’m Damián
**Senior Software Engineer** with 10+ years turning ideas into _real, working code_ — using **Kotlin**, **Java**, **Python**, **Haskell**, **JavaScript**, and **SQL**.
---
### 🚀 But here’s what really matters:
I know how overwhelming programming can feel —
and I’m *really* good at making it make sense.
Whether you're:
- A **beginner** who thinks `if` statements are witchcraft,
- In **university or bootcamp** and your code feels like a tragic love story,
- Or a **pro** getting roasted by a bug that mocks your debugger —
**I’m here to help.**
---
## 🧠 How I Can Help
### **📍 Starting from zero?**
- Learn **Python, Java, Kotlin, or Haskell** — no overwhelm, no nonsense.
- Understand **core concepts**: variables, loops, functions — *and why they matter*.
- Build **real projects**, not just toy examples.
- Stop copy-pasting code you don’t understand — I’ll help you _actually get it_.
---
### **🎓 In school or bootcamp?**
- Tackle **assignments** with clear explanations — not just magic answers.
- Design class hierarchies that *actually make sense*.
- Debug weird, soul-crushing errors.
- Start **thinking like a developer**, not just surviving syntax.
---
### **💼 Already coding professionally?**
- Write **meaningful tests** (JUnit, Mockito, pytest — no excuses).
- Migrate from **Java → Kotlin** or **OOP → FP** — _without the pain_.
- Work confidently with **Spring Boot, GraphQL, PostgreSQL, MySQL**.
- Refactor legacy code for **clarity, speed, and sanity**.
- Finally grasp **functional programming** — yes, *even monads* (no PhD needed).
---
## 🎯 My Teaching Style
- **No ego, no jargon** → Ask anything. I’ll meet you where you are.
- **"Why" over "what"** → I’ll help you _understand_, not just repeat.
- **Adaptable & fun** → If cat memes help you learn, I’ll bring the cats. 🐱
---
## ✅ Bottom line?
Whether you’re stuck, starting out, or leveling up —
**we’ll make progress, one clear concept at a time.**
I have experience as a Data Engineer, Machine Learning Engineer, Organization/Process designer, and Team Leader. I'm looking for part-time work while pursuing personal projects connected both to software and organizational theory.
My focus is on Python and Scala, even though I have professional experience in several different languages that I can brush up on if needed.
I have plenty of experience in translating business needs or research code into actionable requirements. This includes first and foremost effective communication skills, mediation, and facilitation of meetings. If it's of interest, I can bring to your organization more effective meeting practices and review your process and practices around software development and decision making.
I'm also proficient in prototyping and software for internal use, using no-code tools like Notion or Airtable and automation suites like Zapier or n8n.
Expert at developing high-quality software solutions that leverage appropriate automation techniques.
Looking forward to pair programming with you on your problem!
I am a seasoned developer specializing in developing high performance, scalable data processing pipelines and machine learning solutions.
I have experience in working in variety of environments (ranging from large from small startups to large enterprise companies), roles (from teaching curriculum curator, through front-line developer to solution architect) and domains.
Application Developer in a wide variety of business applications. Particularly interested in server side technologies.
Experienced in Java J2EE web application development including Content Management System (Alfresco), Portal Applications (Liferay and SharePoint).
Experience in interfacing different business application using middleware servers (BizTalk, SSIS).
Experience in Big Data Implementation using Spark, Scala, Hive, Hbase, and Pig.
Experience in various domain like banking (credit card application), media & entertainment, Logistic and manufacturing.
Specialties: Big Data Application implementation in Scala and spark using Horton works platform. Design and Implemented projects with data load up to 1 TB per hour with complex transformation.
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Frequently asked questions
How long do Scala projects normally take?
The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Scala project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Scala request on Codementor, check out our article.
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