Senior Engineering Partner
London · New York · Warsaw · Córdoba (Argentina)
Software engineering through systems thinking.
We build complex products with the senior expertise they deserve — event technology at global scale, energy management systems, AI-integrated products, simulators, distributed microservices, regulated platforms. We think like founders, not contractors.
What we do
Software Development Services Offered
Collaborating with Four Ages means delegating complex technological tasks to experts with extensive expertise and skillsets. Our company aims to establish long-term partnerships and see how our clients grow and prosper with technological solutions.
Advantages
Why Businesses Choose Us?
We specialise in building solutions from scratch and providing skilled team augmentation worldwide. Partner with us to propel your projects to new heights.
100%
Expert custom software developers with a passion for innovation
85%
Our staff retention reflects team stability and loyalty over the years
Flexible
Complex problem solvers
We thrive on understanding and solving challenges, turning complexity into opportunity.
Advantages
Highly-skilled team
Our team comprises top-tier developers, designers, BAs and QAs carefully selected for their exceptional skills and expertise.
TRANSPARENT
No lock-in
All necessary resources are delivered for a seamless transition if you need to continue working with your team or other technical partners.
SECURE
A to Z product delivery
From strategy to live product, one cohesive team manages your project, ensuring consistent expertise and seamless execution.
Technologies
Technologies and Platforms We Use
We specialise in building solutions from scratch and providing skilled team augmentation across the world. Partner with us to propel your projects to new heights.
Back-End
JavaScript
PHP
Python
Java
C/C++
.Net
Node JS
Ruby
Front-End
Mobile
Databases
MongoDB
Firebase
MySQL
Couchbase
PostgreSQL
AWS DB
Cloud
AWS
GCP
MS Azure
Big Data
HDFS
Apache Spark
Apache Flink
MapReduce
Apache Hive
Apache Pig
Apache Kafka
Apache NiFi
Amazon Redshift
Google BigQuery
Snowflake
Mongo DB
Cassandra
Couchbase
TensorFlow
Apache Mahout
Docker
Kubernetes
Tableau
Power BI
Apache Superset
Kerberos
Apache Ranger
Hadoop Yarn
VR, MR, AR
Unity
Lidar Scanners
Haptic gloves
C#
HypeBox
Vision Pro
XR Technologies
AR Glasses
Testimonials
Our Customers Say
Discover how our solutions have empowered businesses to achieve their digital aspirations and drive real-world success.
Unmatched Expertise in Tech Solutions
Exceptional Support and Partnership
50+ Success stories
Riley Allen
Product Owner, Ticketing Co
Four Ages Software has delivered incremental deliverables every three weeks, resulting in better platform stability and documentation processes. The team has been highly responsive and proactive, ensuring an effective workflow. The client has been impressed with the team's communication.
Adam Blackney
I had the pleasure of working with Four Ages Software over the past year. During this time, they have demonstrated exceptional expertise and professionalism in supporting our technical needs.
Together, we successfully built and managed a dedicated team of 11 engineers, who were instrumental in advancing our projects and ensuring we met our goals. Their commitment to quality, timely delivery, and problem-solving has been invaluable to our success.
I highly recommend Four Ages Software for their ability to work collaboratively, scale teams efficiently, and deliver high-quality technical solutions.
Thanks,
Adam Blakney
FAQ
Questions? We're glad you asked.
Rates depend on seniority, stack, and team composition — for European teams, typical rates run $40–$70 per hour, usually structured as a fixed monthly rate per engineer. A 4-person dedicated team (3 developers + QA) typically runs $25,000–$45,000 per month. That includes management, recruiting, retention, equipment, and replacement guarantees — costs that hit separately when hiring in-house.
A lean MVP typically starts around $25,000, with mid-complexity SaaS products running $50,000–$100,000. The biggest cost drivers are scope (number of user-facing features), third-party integrations, and compliance requirements. The cheapest way to reduce cost is cutting scope, not rates — a smaller MVP from a senior team beats a bloated one from a cheap team.
An MVP typically takes 2–4 months from kickoff to launch. What slows projects down most: unclear decision-making on the client side, scope creep mid-build, and late discovery of integration complexity. Four Ages runs discovery, design, and engineering in overlapping tracks — validating with real users before the expensive build begins — which compresses time-to-market.
Staff augmentation adds individual engineers to your existing team, working under your management. A dedicated software development team is a complete, self-managed unit — developers, QA, and a lead — accountable for outcomes, not just hours. Choose augmentation when you have strong internal engineering leadership and need extra capacity; choose a dedicated team when you need a product or workstream delivered end to end. Four Ages provides both models and helps clients pick based on their internal structure.
Freelancers work well for small, clearly scoped tasks. For anything longer than a few months, a dedicated team wins on continuity: shared context, consistent code standards, built-in QA, guaranteed replacements if someone leaves, and a single contract covering IP and accountability. With freelancers, knowledge and code ownership scatter across individuals — a common reason startup codebases become unmaintainable.
A solid contract covers: engagement model and scope, full IP assignment, confidentiality, developer replacement guarantees, SLAs for communication and support, transparent pricing with no hidden fees, and exit terms with a defined handover process. Be wary of vendors who resist exit clauses — lock-in is a business model. Four Ages publishes a no-lock-in commitment: all resources are delivered for a seamless transition at any point.
Three things must be in writing: full IP assignment to you upon creation (work-for-hire), NDAs covering every team member individually, and code residing in repositories you control from day one. Four Ages contracts include all three by default — plus a no-lock-in clause: if you ever leave, all code, documentation, and access transfer cleanly.
Four Ages has engineering hubs in the UK, Poland, Ukraine, and Argentina — Argentina offers near-full overlap with US time zones, and European hubs give 4+ hours of daily overlap with the US East Coast. The practical playbook: core overlap windows reserved for ceremonies and pairing, asynchronous decision logs for everything else, and documentation-first communication so no decision depends on someone being awake.
Every Four Ages engineer passes multi-stage internal vetting: hands-on coding assessment, system design review, and English communication check. Clients then interview and approve every developer proposed for their team — you are never assigned someone unseen, and you can decline any candidate. This double filter is why our clients rate team quality 5.0 on Clutch.
True end-to-end delivery covers discovery and strategy, UX/UI design, architecture and engineering, QA, deployment, and post-launch support — under one accountable team. What stays on your side: product vision, priority decisions, and domain knowledge. Be skeptical of "end-to-end" vendors who quietly subcontract stages they do not own — ask who personally is responsible for each phase.
