Ask HN: Freelancer? Seeking freelancer? (August 2025)

20+ yoe as dev/IC. 10+ yoe in managerial and executive roles. Multiple great exits and acquisitions. I have recently built a software NGO with over half a million supporters and over a thousand active volunteers and major political and media networking. I have built tech for Tezos, Oracle, Shell, Digitas, Saatchi & Saatchi, Time Warner, Sparkasse, Bank of America.

If there's a problem related to tech, I can solve it, and build a team or company around it. Available for work as dev/IC, EM, Director, or CTO, with experience in each. Full-solution MVP development from scratch. Performance optimization and modernization of older systems. DSL and programming language design, compilers. Let me know if you're looking for experience that isn't below! HN posts are short. CV upon request.

If you think I might be able to help you, shoot me an email: damian.jobsites+hn@gmail.com

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Example engagement types:

- Long term dev / IC or managerial roles

- Security audits for cryptography and secure code

- Review your code and dev processes, 10-page report

- Short-term dev and research work

- One-shot meetings

(see reply for skill list)

Hi there! I'm Dylan Fitzgerald, a software engineering consultant with a knack for bridging the gap between technology and team dynamics. With a technical background in Ruby on Rails, Elixir, and DevOps, I excel in elevating the quality of projects while fostering a harmonious team environment. My years of consulting across the industry give me perspective on what works—and doesn't—with teams and process. In particular, I thrive on turning the implicit into deliberate decisions.

- Full-stack development with a focus on Ruby on Rails and Elixir ecosystems.

- Expert implementation of TDD (particularly RSpec) ensuring reliable, maintainable code.

- Process, communication, and goal refinement within your existing team.

- Consulting to aid in making informed decisions for your team and tech stack.

- DevOps practices to streamline your deployment and infrastructure management.

- Well-versed in using agentic AI tooling (my daily driver is Claude Code these days), and happy to explore and demo how this can accelerate you and your team.

My training in Shape Up and cross-industry exposure helps me tailor strategies specific to your team’s dynamics. I thrive in collaborative settings, helping leadership and teams navigate through their challenges to achieve exemplary results.

Other engagements have seen me providing code review services to hundreds of developers (junior to CTO level), and driving process improvements that enhance team cohesion and project delivery.

Let’s explore how we can build great stuff together! Email: dylan+hn at arborealstudios.com

Blog: https://www.dylanfitzgerald.net/blog

GitHub: https://github.com/arubis

Tech Stack:

- Languages: Elixir/OTP (Phoenix, LiveView), Ruby/Rails, JavaScript (vanilla, TS, lit, React), HTML, CSS/Sass, SQL, HCL, shell

- Systems and Services: Linux, Apache, nginx, MySQL, PostgreSQL, Redis, CDNs, vuln mitigation.

- DevOps: AWS, GCP, Heroku, Ansible, Terraform, Docker, CI/CD (Gitlab, CircleCI, GH Actions)

PERL Expert | DevOps Engineer | SQL/SOLR Specialist

Language: English, German

Areas of expertise:

    • Legacy PERL Code Maintenance
    • PERL Performance Optimization
    • PERL Security & Compliance
    • Migration Services
        → PERL to Python Migration
        → Database Version Upgrades
        → Legacy System Modernization

    • Prometheus based monitoring systems
    • Cloud / On-premise inventory systems and synchronization to CMDB/ITSM
    • MLS data synchronization via RESO/RETS - https://mlsync.io

Email: ja.hn4[at]mailgw.com

I’m a freelance electrical & embedded systems engineer with 10+ years of experience helping clients build and ship IoT and electronics products. Here’s how I can add value to your project: End-to-end product development – I can take your device from initial prototype to mass production, handling system architecture, design for manufacturing, and navigating safety certifications (FCC, UL, CE).

Embedded wireless & security – Deep expertise in BLE, Wi‑Fi, sub‑GHz RF and secure protocols. I troubleshoot connectivity issues, optimize power consumption, and implement cryptography to keep your data safe.

Technical leadership – Need a part-time CTO/firmware lead? I’ve led hardware/firmware teams through WCCA/FMEA analyses, design reviews, and tight delivery schedules. I ensure robust, reliable products and can mentor your engineers along the way.

Availability: Immediate, for short-term consulting or longer engagements. Remote work with periodic on-site visits is fine. I’m U.S.-based and flexible on time zones.

Deliverables: Whether you need a one-off prototype, a full product design, or an experienced eye to review your existing designs, I’ll hit the ground running. Let’s discuss how I can help make your project a success!

Resume: on request

Email: embedded.builder@gmail.com

I am a Site Reliability Engineer (SRE), Google Style, with experience at both large and small organizations. I can help you build a Platform Engineering practice from the very beginning. I'm looking to help small dev teams increase their velocity by implementing best-practices of Devops: CI/CD, Kubernetes Deployments, and effective Monitoring frameworks.

My resume: https://resume.gauntletwizard.net/ThomasHahnResume.pdf

My LinkedIn: https://www.linkedin.com/in/thomas-hahn-3344ba3/

My Github: https://github.com/GauntletWizard