Alongside partners with organizations to drive digital transformation and build high-performing tech teams. Our client is a leading global company in the Defence, Aerospace, and Advanced Digital Technologies sectors and is recruiting a Senior Java Developer with a strong technical profile, capable of taking on technical leadership and becoming a key reference for the team.
Responsabilities:
- Act as Technical Leader
- Estimate effort and ensure delivery timelines
- Produce technical documentation
- Support and train junior team members
- Collaborate with the team in Spain
- Develop Java solutions integrated with physical devices
Requirements
- Degree in Computer Engineering or similar
- Minimum of 5 years of hands-on experience with Java 11, Java Swing, Spring Boot, and Elasticsearch
- Experience with PostgreSQL and SOAP & REST web services
- Communication protocols (TCP, UDP, H264, MPEG, etc.)
- Strong organizational and communication skills
- Ability to prioritize tasks and work in fast-paced environments
- Collaborative mindset and problem-solving attitude
- Ability to communicate in and understand Spanish
Benefits
- Employment Contract;
- Health Insurance;
- Meal Card;
- Gym Ticket;
- Hybrid work (3 office days: Sintra–Lisbon).
Top Skills
What We Do
Alongside | Build Great Products with Great Teams
Alongside helps VC-backed start-ups, scale-ups and digital-first enterprises accelerate their roadmaps by assembling elite, time-zone-aligned teams of software engineers, product managers and UX/UI designers, often in under 14 days. Our Porto HQ sits in Europe’s fastest-growing tech hub and taps a vetted global talent pool that lets you ship faster, reduce burn and stay laser-focused on product-market fit.
Why high-growth companies choose Alongside
• Top 1 % practitioners: rigorously screened full-stack, mobile, blockchain & AI/ML engineers, plus senior designers and product leaders. 
• Flexible engagement models: scale a single specialist, an entire squad, or an autonomous build-and-ship pod.
• End-to-end ownership: discovery → design → development → launch, with weekly velocity reports and transparent KPIs.
• Cost-efficient remote talent: New York, Porto, Pune & Hanoi offices give you round-the-clock progress without Silicon-Valley price tags. 
• Proven track record: core Alongside team took Arkive, the world’s first decentralised museum, from idea to funded product. We helped Circuit Security to secure 4.5M in funding and many other startups.
